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Associate Professor (Agronomy) with more than 15 years of research experience. Research interests: Agroclimatology, Climate change impact assessment, Environmental ecology, Plant environment interaction.
Auxins (IAA) and cytokinins (CKs) are the most influential phytohormones, having multifaceted roles in plants. They are key regulators of plant growth and developmental processes. Additionally, their interplay exerts tight control on plant development and differentiation. Although several reviews have been published detailing the auxin-cytokinin interplay in controlling root growth and differentiation, their roles in the shoot, particularly in leaf morphogenesis are largely unexplored. Recent reports have provided new insights on the roles of these two hormones and their interplay on leaf growth and development. In this review, we focus on the effect of auxins, CKs, and their interactions in regulating leaf morphogenesis. Additionally, the regulatory effects of the auxins and CKs interplay on the phyllotaxy of plants are discussed.
Sajid Hussain; Satyabrata Nanda; Junhua Zhang; Muhammad Ishaq Asif Rehmani; Muhammad Suleman; Gaojie Li; Hongwei Hou. Auxin and Cytokinin Interplay during Leaf Morphogenesis and Phyllotaxy. Plants 2021, 10, 1732 .
AMA StyleSajid Hussain, Satyabrata Nanda, Junhua Zhang, Muhammad Ishaq Asif Rehmani, Muhammad Suleman, Gaojie Li, Hongwei Hou. Auxin and Cytokinin Interplay during Leaf Morphogenesis and Phyllotaxy. Plants. 2021; 10 (8):1732.
Chicago/Turabian StyleSajid Hussain; Satyabrata Nanda; Junhua Zhang; Muhammad Ishaq Asif Rehmani; Muhammad Suleman; Gaojie Li; Hongwei Hou. 2021. "Auxin and Cytokinin Interplay during Leaf Morphogenesis and Phyllotaxy." Plants 10, no. 8: 1732.
Stem reserves in grain crops are considered important in grain filling under post-anthesis stress in the absence/low availability of photosynthetic assimilates. Considerable variation is present among genotypes for stem reserve translocation in wheat. Therefore, this study aimed to exploit the phenotypic variation for stem reserve translocation in wheat under control and chemically induced stress conditions. The phenotypic variation among six parents and their corresponding direct cross combinations was evaluated under induced stress conditions. The results signify the presence of considerable variation between treatments, genotypes, and treatment-genotype interactions. The parent LLR-20 depicted the highest translocation of dry matter and contribution of post-anthesis assimilates under induced-stress conditions. Similarly, cross combinations Nacozari × LLR22, Nacozari × LLR 20, Nacozari × Parula, Nacozari × LLR 21, LLR 22 × LLR 21, and LLR 20 × LLR 21 showed higher source-sink accumulation under induced-stress conditions. The selected parents and cross combinations can be further utilized in the breeding program to strengthen the genetic basis for stress tolerance in wheat.
Mian Nazir; Zareen Sarfraz; Naimatullah Mangi; Muhammad Nawaz Shah; Talat Mahmood; Tahir Mahmood; Muhammad Iqbal; Muhammad Ishaq Asif Rehmani; Mohamed El-Sharnouby; Mohamed Shabaan; Sobhy Sorour; Ayman EL Sabagh. Post-Anthesis Mobilization of Stem Assimilates in Wheat under Induced Stress. Sustainability 2021, 13, 5940 .
AMA StyleMian Nazir, Zareen Sarfraz, Naimatullah Mangi, Muhammad Nawaz Shah, Talat Mahmood, Tahir Mahmood, Muhammad Iqbal, Muhammad Ishaq Asif Rehmani, Mohamed El-Sharnouby, Mohamed Shabaan, Sobhy Sorour, Ayman EL Sabagh. Post-Anthesis Mobilization of Stem Assimilates in Wheat under Induced Stress. Sustainability. 2021; 13 (11):5940.
Chicago/Turabian StyleMian Nazir; Zareen Sarfraz; Naimatullah Mangi; Muhammad Nawaz Shah; Talat Mahmood; Tahir Mahmood; Muhammad Iqbal; Muhammad Ishaq Asif Rehmani; Mohamed El-Sharnouby; Mohamed Shabaan; Sobhy Sorour; Ayman EL Sabagh. 2021. "Post-Anthesis Mobilization of Stem Assimilates in Wheat under Induced Stress." Sustainability 13, no. 11: 5940.
The changing climate and global warming have rendered existing surface water insufficient, which is projected to adversely influence the irrigated farming systems globally. Consequently, groundwater demand has increased significantly owing to increasing population and demand for plant-based foods especially in South Asia and Pakistan. This study aimed to determine the potential areas for groundwater use for agriculture sector development in the study area Lower Dir District. ArcGIS 10.4 was utilized for geospatial analysis, which is referred to as Multi Influencing Factor (MIF) methodology. Seven parameters including land cover, geology, soil, rainfall, underground faults (liniment) density, drainage density, and slope, were utilized for delineation purpose. Considering relative significance and influence of each parameter in the groundwater recharge rating and weightage was given and potential groundwater areas were classified into very high, high, good, and poor. The result of classification disclosed that the areas of 113.10, 659.38, 674.68, and 124.17 km2 had very high, high, good, and poor potential for groundwater agricultural uses, respectively. Field surveys for water table indicated groundwater potentiality, which was high for Kotkay and Lalqila union councils having shallow water table. However, groundwater potentiality was poor in Zimdara, Khal, and Talash, characterized with a very deep water table. Moreover, the study effectively revealed that remote sensing and GIS could be developed as potent tools for mapping potential sites for groundwater utilization. Furthermore, MIF technique could be a suitable approach for delineation of groundwater potential zone, which can be applied for further research in different areas.
Abid Sarwar; Sajid Ahmad; Muhammad Rehmani; Muhammad Asif Javid; Shazia Gulzar; Muhammad Shehzad; Javeed Shabbir Dar; Alaa Baazeem; Muhammad Iqbal; Muhammad Rahman; Milan Skalicky; Marian Brestic; Ayman EL Sabagh. Mapping Groundwater Potential for Irrigation, by Geographical Information System and Remote Sensing Techniques: A Case Study of District Lower Dir, Pakistan. Atmosphere 2021, 12, 669 .
AMA StyleAbid Sarwar, Sajid Ahmad, Muhammad Rehmani, Muhammad Asif Javid, Shazia Gulzar, Muhammad Shehzad, Javeed Shabbir Dar, Alaa Baazeem, Muhammad Iqbal, Muhammad Rahman, Milan Skalicky, Marian Brestic, Ayman EL Sabagh. Mapping Groundwater Potential for Irrigation, by Geographical Information System and Remote Sensing Techniques: A Case Study of District Lower Dir, Pakistan. Atmosphere. 2021; 12 (6):669.
Chicago/Turabian StyleAbid Sarwar; Sajid Ahmad; Muhammad Rehmani; Muhammad Asif Javid; Shazia Gulzar; Muhammad Shehzad; Javeed Shabbir Dar; Alaa Baazeem; Muhammad Iqbal; Muhammad Rahman; Milan Skalicky; Marian Brestic; Ayman EL Sabagh. 2021. "Mapping Groundwater Potential for Irrigation, by Geographical Information System and Remote Sensing Techniques: A Case Study of District Lower Dir, Pakistan." Atmosphere 12, no. 6: 669.
Soil salinity disrupts the physiological and biochemical processes of crop plants and ultimately leads to compromising future food security. Sodium nitroprusside (SNP), a contributor to nitric oxide (NO), holds the potential to alleviate abiotic stress effects and boost tolerance in plants, whereas less information is available on its role in salt-stressed lentils. We examined the effect of exogenously applied SNP on salt-stressed lentil plants by monitoring plant growth and yield-related attributes, biochemistry of enzymes (superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD)) amassing of leaf malondialdehyde (MDA) and hydrogen peroxide (H2O2). Salinity stress was induced by NaCl application at concentrations of 50 mM (moderate salinity) and 100 mM (severe salinity), while it was alleviated by SNP application at concentrations of 50 µM and 100 µM. Salinity stress severely inhibited the length of roots and shoots, the relative water content, and the chlorophyll content of the leaves, the number of branches, pods, seeds, seed yield, and biomass per plant. In addition, MDA, H2O2 as well as SOD, CAT, and POD activities were increased with increasing salinity levels. Plants supplemented with SNP (100 µM) showed a significant improvement in the growth- and yield-contributing parameters, especially in plants grown under moderate salinity (50 mM NaCl). Essentially, the application of 100 µM SNP remained effective to rescue lentil plants under moderate salinity by regulating plant growth and biochemical pathways. Thus, the exogenous application of SNP could be developed as a useful strategy for improving the performance of lentil plants in salinity-prone environments.
Tauqeer Yasir; Ayesha Khan; Milan Skalicky; Allah Wasaya; Muhammad Rehmani; Naeem Sarwar; Khuram Mubeen; Mudassir Aziz; Mohamed Hassan; Fahmy Hassan; Muhammad Iqbal; Marian Brestic; Mohammad Islam; Subhan Danish; Ayman EL Sabagh. Exogenous Sodium Nitroprusside Mitigates Salt Stress in Lentil (Lens culinaris Medik.) by Affecting the Growth, Yield, and Biochemical Properties. Molecules 2021, 26, 2576 .
AMA StyleTauqeer Yasir, Ayesha Khan, Milan Skalicky, Allah Wasaya, Muhammad Rehmani, Naeem Sarwar, Khuram Mubeen, Mudassir Aziz, Mohamed Hassan, Fahmy Hassan, Muhammad Iqbal, Marian Brestic, Mohammad Islam, Subhan Danish, Ayman EL Sabagh. Exogenous Sodium Nitroprusside Mitigates Salt Stress in Lentil (Lens culinaris Medik.) by Affecting the Growth, Yield, and Biochemical Properties. Molecules. 2021; 26 (9):2576.
Chicago/Turabian StyleTauqeer Yasir; Ayesha Khan; Milan Skalicky; Allah Wasaya; Muhammad Rehmani; Naeem Sarwar; Khuram Mubeen; Mudassir Aziz; Mohamed Hassan; Fahmy Hassan; Muhammad Iqbal; Marian Brestic; Mohammad Islam; Subhan Danish; Ayman EL Sabagh. 2021. "Exogenous Sodium Nitroprusside Mitigates Salt Stress in Lentil (Lens culinaris Medik.) by Affecting the Growth, Yield, and Biochemical Properties." Molecules 26, no. 9: 2576.
Use of older age seedlings of rice often decreased the yield in transplanted rice systems. However, the response of rice seedlings at different ages in transplanting system under alternate wetting and drying (AWD) is not well documented. Therefore, this study was endeavored to identify the suitable seedling age of fine rice cultivars in transplanted rice systems under AWD. Four seedling age treatments (20, 25, 30, and 35 days), and three fine rice cultivars (Chenab, Punjab, Kissan basmati) were arranged under randomized complete block design (RCBD). Two years (2017–2018) of studies demonstrated that overall younger seedlings (20 days old) increased rice growth phase (days taken to reach physiological maturity) after transplantation with less mortality rate, and quantified with higher water productivity. Younger seedlings (20 days old) produced 14.69% and 13.36% longer panicle, 19.36% and 18% more filled grains panicle−1 in both years (2017 and 2018) respectively as compared to the older seedlings (35 days old). Moreover, younger seedling (20 days) produced 22% and 22.92% kg ha−1 more yield in comparison to (35 days) older seedling in both years, respectively. However, cultivars also had significant differences in growth and yield production, and Chenab basmati showed vigorous growth and produced higher yield than Punjab and Kissan basmati. Furthermore, agronomic traits such as, productive tillers, panicle length, number of branches, and filled grains in panicle significantly contributed for grain yield formation. Overall, our results revealed that younger seedlings of fine rice could be a better option to obtain optimum fine rice yield under AWD.
Ahmad Latif Virk; Muhammad Shahbaz Farooq; Ashfaq Ahmad; Tasneem Khaliq; Muhammad Ishaq Asif Rehmani; Fasih Ullah Haider; Irsa Ejaz. Effect of seedling age on growth and yield of fine rice cultivars under alternate wetting and drying system. Journal of Plant Nutrition 2020, 44, 1 -15.
AMA StyleAhmad Latif Virk, Muhammad Shahbaz Farooq, Ashfaq Ahmad, Tasneem Khaliq, Muhammad Ishaq Asif Rehmani, Fasih Ullah Haider, Irsa Ejaz. Effect of seedling age on growth and yield of fine rice cultivars under alternate wetting and drying system. Journal of Plant Nutrition. 2020; 44 (1):1-15.
Chicago/Turabian StyleAhmad Latif Virk; Muhammad Shahbaz Farooq; Ashfaq Ahmad; Tasneem Khaliq; Muhammad Ishaq Asif Rehmani; Fasih Ullah Haider; Irsa Ejaz. 2020. "Effect of seedling age on growth and yield of fine rice cultivars under alternate wetting and drying system." Journal of Plant Nutrition 44, no. 1: 1-15.
Effect of Growth Regulator and Ultra-Narrow Row (Unr) Spacing on Growth, Yield and Yield Components of Cotton
Sikander Hiyat; Nazim Hussain; Muhammad Ishaq Asif Rehmani; Muhammad Nasir Abbas; Smana Raza; Javed Shabbir Dar; Tauqeer Ahmad Yasir. Effect of Growth Regulator and Ultra-Narrow Row (Unr) Spacing on Growth, Yield and Yield Components of Cotton. Pakistan Journal of Agricultural Research 2020, 33, 1 .
AMA StyleSikander Hiyat, Nazim Hussain, Muhammad Ishaq Asif Rehmani, Muhammad Nasir Abbas, Smana Raza, Javed Shabbir Dar, Tauqeer Ahmad Yasir. Effect of Growth Regulator and Ultra-Narrow Row (Unr) Spacing on Growth, Yield and Yield Components of Cotton. Pakistan Journal of Agricultural Research. 2020; 33 (3):1.
Chicago/Turabian StyleSikander Hiyat; Nazim Hussain; Muhammad Ishaq Asif Rehmani; Muhammad Nasir Abbas; Smana Raza; Javed Shabbir Dar; Tauqeer Ahmad Yasir. 2020. "Effect of Growth Regulator and Ultra-Narrow Row (Unr) Spacing on Growth, Yield and Yield Components of Cotton." Pakistan Journal of Agricultural Research 33, no. 3: 1.
Dry land plants owing to their capability to grow under stressful environment have shown higher allelopathic potential as compared to cultivated plants. An experiment was conducted to investigate the herbicidal potential of aqueous extracts of four dry land plants viz. fruit and vine of Citrullus colocynthis, and above ground parts of Rhazya stricta; Crotalaria burhia and Calligonum polygonoides, with four concentrations (25, 50, 75 and 100%) of initially prepared extracts against Lathyrus aphaca, a common weed of wheat in the studied region. These plants were collected from dry land area (30.03° N and 70.38° E, 129 m above sea level, almost desert conditions) of Dera Ghazi Khan, Punjab, Pakistan. All the four plants exhibited pronounced herbicidal potential with 9 to 91% suppression of different parameters in L. aphaca). Maximum inhibition was recorded in germination (36-91%). Significant suppression in leaf count (9-65%), shoot length (12-59%), root length (4-62%), shoot fresh weight (17-71%), root fresh weight (10-60%), shoot dry weight (15-72%), root dry weight (13-64%), and nodule numbers (34-89%) was also observed. The highest inhibition was exhibited by R. stricta followed by C. colocynthis: fruit. However, in case of nodulation maximum suppression was produced by C. burhia extract. Least suppressant activity was observed for the C. polygonides extract. These results encourage the potential use of locally available dry land plants possessing strong allelochemical properties for nonchemical control of weeds ultimately reducing reliance on chemical control.
J. Iqbal; M.I.A. Rehmani; S. Sagheer; N. Kaleem; J. Muneer. Herbicidal Potential of Some Dry Land Plants Against Lathyrus aphaca (L.), Winter Season Weed. Planta Daninha 2020, 38, 1 .
AMA StyleJ. Iqbal, M.I.A. Rehmani, S. Sagheer, N. Kaleem, J. Muneer. Herbicidal Potential of Some Dry Land Plants Against Lathyrus aphaca (L.), Winter Season Weed. Planta Daninha. 2020; 38 ():1.
Chicago/Turabian StyleJ. Iqbal; M.I.A. Rehmani; S. Sagheer; N. Kaleem; J. Muneer. 2020. "Herbicidal Potential of Some Dry Land Plants Against Lathyrus aphaca (L.), Winter Season Weed." Planta Daninha 38, no. : 1.
In this study, a new hybrid model, bootstrap multiple linear regression (BMLR) is suggested to investigate the potential of bootstrap resampling technique for daily reservoir inflow prediction. The proposed model compares with three other models: Multiple linear regression (MLR), wavelet multiple linear regression (WMLR) and wavelet bootstrap multiple linear regression (WBMLR). River stage data of monsoon season (1st July 2010 to 30 September 2010) from three gauging stations of Chenab river basin are used. In wavelet transformation, input vectors are decomposed using discrete wavelet transformation (DWT) into discrete wavelet components (DWCs). Then suitable DWCs are used to provide input to MLR model to develop WMLR model. Bootstrap technique coupled with MLR model to build up BMLR model. While WBMLR model is the conjunction of suitable DWCs and bootstrap technique to MLR model. Performance indices namely root mean square error (RMSE), mean absolute error (MAE), Nash-Sutcliffe coefficient of efficiency (NSC), and persistence index (CP) are used in study to evaluate the performance of model. Results showed that hybrid model BMLR produce significantly better results on performance indices than other models MLR, WMLR and WBMLR.
Adnan Bashir; Muhammad Ahmed Shehzad; Ijaz Hussain; Muhammad Ishaq Asif Rehmani; Sajjad Haider Bhatti. Reservoir Inflow Prediction by Ensembling Wavelet and Bootstrap Techniques to Multiple Linear Regression Model. Water Resources Management 2019, 33, 5121 -5136.
AMA StyleAdnan Bashir, Muhammad Ahmed Shehzad, Ijaz Hussain, Muhammad Ishaq Asif Rehmani, Sajjad Haider Bhatti. Reservoir Inflow Prediction by Ensembling Wavelet and Bootstrap Techniques to Multiple Linear Regression Model. Water Resources Management. 2019; 33 (15):5121-5136.
Chicago/Turabian StyleAdnan Bashir; Muhammad Ahmed Shehzad; Ijaz Hussain; Muhammad Ishaq Asif Rehmani; Sajjad Haider Bhatti. 2019. "Reservoir Inflow Prediction by Ensembling Wavelet and Bootstrap Techniques to Multiple Linear Regression Model." Water Resources Management 33, no. 15: 5121-5136.
This study investigated pollinator assemblage diversity and richness in four forested ecosystems of southern Punjab, Pakistan, with different landscape types. Pirowal is situated in the plains of irrigated Punjab, Lal Suhanra is part of a sandy desert ecosystem, Ghazi Ghat is part of the Indus River delta, and Fort Munro is located in dry hilly mountains. A yearlong survey of pollinator populations was carried out in these four forested ecosystems from January to December of 2010. Fortnightly hand netting was performed for collecting flower-visiting insects whereas, pan traps of three colors (white, blue, and yellow) were deployed for collecting the data. A total of 8,812 individuals from two orders (Lepidoptera and Diptera) were observed, including 22 families and 154 species. Bees were the most abundant, with 4,502 individuals, and the most species-rich taxa, with 70 species in five families, followed by flies having 2,509 individuals and 51species in 10 families. Wasps were the least abundant with 1,801 individuals and 33 species in seven families. The assemblage structure of pollinator communities as visualized through rank abundance curves showed that there were many species with low abundance and only a few species with a much higher abundance. The most abundant species among the bees, in order, were Nomia sp.3, Megachile bicolor, and Colletes sp.3; among flies, Syrphus sp.2, Calliphoridae sp.1, and Empididae sp.4; and among wasps, Tiphiidae sp.1, Myzininae sp.2, and Scelionidae sp.1.
Muhammad Amjad Bashir; Shafqat Saeed; Asif Sajjad; Khalid Ali Khan; Hamed Ali Ghramh; Muhammad Ahmed Shehzad; Hussani Mubarak; Nosheen Mirza; Shahzadi Mahpara; Muhammad Ishaq Asif Rehmani; Mohammad Javed Ansari. Insect pollinator diversity in four forested ecosystems of southern Punjab, Pakistan. Saudi Journal of Biological Sciences 2019, 26, 1835 -1842.
AMA StyleMuhammad Amjad Bashir, Shafqat Saeed, Asif Sajjad, Khalid Ali Khan, Hamed Ali Ghramh, Muhammad Ahmed Shehzad, Hussani Mubarak, Nosheen Mirza, Shahzadi Mahpara, Muhammad Ishaq Asif Rehmani, Mohammad Javed Ansari. Insect pollinator diversity in four forested ecosystems of southern Punjab, Pakistan. Saudi Journal of Biological Sciences. 2019; 26 (7):1835-1842.
Chicago/Turabian StyleMuhammad Amjad Bashir; Shafqat Saeed; Asif Sajjad; Khalid Ali Khan; Hamed Ali Ghramh; Muhammad Ahmed Shehzad; Hussani Mubarak; Nosheen Mirza; Shahzadi Mahpara; Muhammad Ishaq Asif Rehmani; Mohammad Javed Ansari. 2019. "Insect pollinator diversity in four forested ecosystems of southern Punjab, Pakistan." Saudi Journal of Biological Sciences 26, no. 7: 1835-1842.
Electronic waste (e-waste) is used for all electronic/electrical devices which are no more used. Conventionally, waste management policies are desfig handle the traditional waste. Although e-waste contains toxic materials, however, its management is rarely focused by policy makers; therefore, its negative impact on the global environment, ecosystem, and human health is aggravated. The review outlines the categories of e-waste materials, major pollutants including ferrous/non-ferrous metals, plastics, glass, printed circuit boards, cement, ceramic, and rubber beside, some valuable metals (such as copper, silver, gold, platinum). Toxic elements from e-waste materials, released in the air, water, and soil, include arsenic, cadmium, chromium, mercury, and lead, causing pollution. Although their roles in biological systems are poorly identified, however, they possess significant toxic and carcinogenic potential. It is therefore critical to monitor footprint and device strategies to address e-waste-linked issues from manufacturing, exportation, to ultimate dumping, including technology transmissions for its recycling. This review traces a plausible link among e-waste condition at a worldwide dimension, as far as settlement procedures to keep it secure and carefully monitored when traded. Their fate in the three spheres of the earth, i.e., water, soil, and air, impacts human health. The strategies and regulation to handle e-waste generation at the global level have been discussed.
Rida Akram; Natasha; Shah Fahad; Muhammad Zaffar Hashmi; Abdul Wahid; Muhammad Adnan; Muhammad Mubeen; Naeem Khan; Muhammad Ishaq Asif Rehmani; MuhammadD Awais; Mazhar Abbas; Khurram Shahzad; Shakeel Ahmad; Hafiz Mohkum Hammad; Wajid Nasim. Trends of electronic waste pollution and its impact on the global environment and ecosystem. Environmental Science and Pollution Research 2019, 26, 16923 -16938.
AMA StyleRida Akram, Natasha, Shah Fahad, Muhammad Zaffar Hashmi, Abdul Wahid, Muhammad Adnan, Muhammad Mubeen, Naeem Khan, Muhammad Ishaq Asif Rehmani, MuhammadD Awais, Mazhar Abbas, Khurram Shahzad, Shakeel Ahmad, Hafiz Mohkum Hammad, Wajid Nasim. Trends of electronic waste pollution and its impact on the global environment and ecosystem. Environmental Science and Pollution Research. 2019; 26 (17):16923-16938.
Chicago/Turabian StyleRida Akram; Natasha; Shah Fahad; Muhammad Zaffar Hashmi; Abdul Wahid; Muhammad Adnan; Muhammad Mubeen; Naeem Khan; Muhammad Ishaq Asif Rehmani; MuhammadD Awais; Mazhar Abbas; Khurram Shahzad; Shakeel Ahmad; Hafiz Mohkum Hammad; Wajid Nasim. 2019. "Trends of electronic waste pollution and its impact on the global environment and ecosystem." Environmental Science and Pollution Research 26, no. 17: 16923-16938.
Paddy soils have a heterogenous nature, with complex physico-chemical interactions and varying soil characteristics. Paddy soils remain flooded and are considered as rich sources of nutrients for plant growth. The nutrient levels mostly depend on different management practices, such as fertilizer application, irrigation, and tillage, and the movement of nutrients in the soils. These paddy soils normally show less movement of applied nutrients out of the medium than other soils, because of stagnant water that reduces the mobility rate. Paddy soils can become polluted by anthropogenic practices such as the use of sewage wastewater; industrial wastewater containing heavy metals; fertilizers; and pesticides, and the leakage of petrochemicals. Some natural pollutants can be oxidized by microbial activity, but most pollutants do not undergo biotic and chemical degradation. Inorganic (heavy metals) and organic pollutants (polychlorinated biphenyls, polychlorinated dibenzodioxins, and polychlorinated dibenzofurans) are the major types of pollutants in paddy soils. The numerous organic and inorganic pollutants resulting from anthropogenic activities can remain for long periods in nature and can be transported over long distances. In particular, organic pollutants can be bioaccumulated and biomagnified, thus reaching high levels that can be dangerous for human wellbeing and biological communities. Inorganic pollutants such as the heavy metals Pb, Cr, As, Zn, Cd, Cu, Hg, and Ni cause hazards for human health, for plants, for animals, and for the fertility status of the soil. These heavy metals are common pollutants in paddy soil and they bioaccumulate; in this way the concentrations of these pollutants increase in living systems, owing to their retention rates being higher than their discharge rates in these systems. The fate of these pollutants depends on their bioavailability, degradation by microorganisms, adsorption, desorption, leaching, and runoff. The transport and degradation of these pollutants in paddy soils and groundwater results in contamination. The physico-chemical characteristics of the paddy soil framework; for example, the water content, soil organic matter, presence of clay, and pH, influence the sorption or desorption and degradation of pollutants and also influence leaching to the groundwater and runoff to surface waters. The translocation of natural pesticides in paddy soils depends upon the ionic or neutral behavior of the soil constituents, on the pesticides’ solubility in water, extremity on the substance, and the colloidal nature of the paddy soils.
Rida Akram; Veysel Turan; Hafiz Mohkum Hammad; Shakeel Ahmad; Sajjad Hussain; Ahmad Hasnain; Muhammad Muddasar Maqbool; Muhammad Ishaq Asif Rehmani; Atta Rasool; Nasir Masood; Faisal Mahmood; Muhammad Mubeen; Syeda Refat Sultana; Shah Fahad; Khizer Amanet; Mazhar Saleem; Yasir Abbas; Haji Muhammad Akhtar; Farhat Waseem; Rabbia Murtaza; Asad Amin; Syed Ahsan Zahoor; Muhammad Sami Ul Din; Wajid Nasim. Fate of Organic and Inorganic Pollutants in Paddy Soils. Soil Biology 2018, 197 -214.
AMA StyleRida Akram, Veysel Turan, Hafiz Mohkum Hammad, Shakeel Ahmad, Sajjad Hussain, Ahmad Hasnain, Muhammad Muddasar Maqbool, Muhammad Ishaq Asif Rehmani, Atta Rasool, Nasir Masood, Faisal Mahmood, Muhammad Mubeen, Syeda Refat Sultana, Shah Fahad, Khizer Amanet, Mazhar Saleem, Yasir Abbas, Haji Muhammad Akhtar, Farhat Waseem, Rabbia Murtaza, Asad Amin, Syed Ahsan Zahoor, Muhammad Sami Ul Din, Wajid Nasim. Fate of Organic and Inorganic Pollutants in Paddy Soils. Soil Biology. 2018; ():197-214.
Chicago/Turabian StyleRida Akram; Veysel Turan; Hafiz Mohkum Hammad; Shakeel Ahmad; Sajjad Hussain; Ahmad Hasnain; Muhammad Muddasar Maqbool; Muhammad Ishaq Asif Rehmani; Atta Rasool; Nasir Masood; Faisal Mahmood; Muhammad Mubeen; Syeda Refat Sultana; Shah Fahad; Khizer Amanet; Mazhar Saleem; Yasir Abbas; Haji Muhammad Akhtar; Farhat Waseem; Rabbia Murtaza; Asad Amin; Syed Ahsan Zahoor; Muhammad Sami Ul Din; Wajid Nasim. 2018. "Fate of Organic and Inorganic Pollutants in Paddy Soils." Soil Biology , no. : 197-214.
Soil contamination with heavy metals is threatening the food security around the globe. Chromium (Cr) contamination results in poor quality and reduction in yield of crops. The present research was performed to figure out the Cr toxicity in sunflower and the ameliorative role of 5-aminolevulinic acid (ALA) as a plant growth regulator. The sunflower (FH-614) was grown under increasing concentration of Cr (0, 5, 10 and 20 mg kg−1) alone and/or in combination with 5-ALA (0, 10 and 20 mg L−1). Results showed that Cr suppressed the overall growth, biomass, gas exchange attributes and chlorophyll content of sunflower plants. Moreover, lower levels of Cr (5 and 10 mg kg−1) increased the production of reactive oxygen species (ROS) and electrolyte leakage (EL) along with the activities of antioxidant enzymes i.e., superoxide dismutase (SOD), guaiacole peroxidase (POD), ascorbate (APX), catalase (CAT). But at higher concentration of Cr (20 mg kg−1), the activities of these enzymes presented a declining trend. However, the addition of 5-ALA significantly alleviated the Cr-induced toxicity in sunflower plant and enhanced the plant growth and biomass parameters along with increased chlorophyll content, gas exchange attributes, soluble proteins and soil plant analysis development (SPAD) values by scavenging the ROS and lowering down the EL. The 5-ALA also enhanced the activities of antioxidant enzymes at all levels of Cr. The increase in Cr concentration in all plant parts such as leaf, root and stem was directly proportional to the Cr concentration in soil. The application of 5-ALA further enhanced the uptake of Cr and its concentration in the plants. To understand this variation in response of plants to 5-ALA, detailed studies are required on plant biochemistry and genetic modifications.
Mujahid Farid; Shafaqat Ali; Muhammad Rizwan; Qasim Ali; Rashid Saeed; Tauqir Nasir; Ghulam Hasan Abbasi; Muhammad Ishaq Asif Rehmani; Syed Tahir Ata-Ul-Karim; Syed Asad Hussain Bukhari; Tanvir Ahmad. Phyto-management of chromium contaminated soils through sunflower under exogenously applied 5-aminolevulinic acid. Ecotoxicology and Environmental Safety 2018, 151, 255 -265.
AMA StyleMujahid Farid, Shafaqat Ali, Muhammad Rizwan, Qasim Ali, Rashid Saeed, Tauqir Nasir, Ghulam Hasan Abbasi, Muhammad Ishaq Asif Rehmani, Syed Tahir Ata-Ul-Karim, Syed Asad Hussain Bukhari, Tanvir Ahmad. Phyto-management of chromium contaminated soils through sunflower under exogenously applied 5-aminolevulinic acid. Ecotoxicology and Environmental Safety. 2018; 151 ():255-265.
Chicago/Turabian StyleMujahid Farid; Shafaqat Ali; Muhammad Rizwan; Qasim Ali; Rashid Saeed; Tauqir Nasir; Ghulam Hasan Abbasi; Muhammad Ishaq Asif Rehmani; Syed Tahir Ata-Ul-Karim; Syed Asad Hussain Bukhari; Tanvir Ahmad. 2018. "Phyto-management of chromium contaminated soils through sunflower under exogenously applied 5-aminolevulinic acid." Ecotoxicology and Environmental Safety 151, no. : 255-265.
Very little is known about pollination and its effects on the yield and physicochemical properties of flowering plants in tropical countries. Wind and insect pollinators are among our natural resources because pollination is the most important ecosystem service performed by wind and insects, and is vital to the socio-economic status of human beings. In this experiment, different pollination methods for tomato plants were examined. Self-pollination was encouraged by covering the plants with a plastic sheet. Wind and insects were excluded from these plants, and thus only self-pollination was possible. The experiment occurred during the flowering stage. Wind-pollinated plants were covered with a muslin cloth, which excluded insects, and only wind could pass through the cloth. For insect pollination, plants remained uncovered, allowing free access to insects to pollinate the flowers. At fruit maturity, when fruits were completely red, fruits from each treatment were harvested on the same date and under the same conditions. Results illustrated the substantial importance of insects as pollinators of tomato crops. Open field had greater tomato yield and positive effects on physicochemical properties on fruit than under self and wind pollination.
Muhammad Amjad Bashir; Abid Mahmood Alvi; Khalid Ali Khan; Muhammad Ishaq Asif Rehmani; Mohammad Javed Ansari; Sagheer Atta; Hamed Ali Ghramh; Tahira Batool; Muhammad Tariq. Role of pollination in yield and physicochemical properties of tomatoes (Lycopersicon esculentum). Saudi Journal of Biological Sciences 2017, 25, 1291 -1297.
AMA StyleMuhammad Amjad Bashir, Abid Mahmood Alvi, Khalid Ali Khan, Muhammad Ishaq Asif Rehmani, Mohammad Javed Ansari, Sagheer Atta, Hamed Ali Ghramh, Tahira Batool, Muhammad Tariq. Role of pollination in yield and physicochemical properties of tomatoes (Lycopersicon esculentum). Saudi Journal of Biological Sciences. 2017; 25 (7):1291-1297.
Chicago/Turabian StyleMuhammad Amjad Bashir; Abid Mahmood Alvi; Khalid Ali Khan; Muhammad Ishaq Asif Rehmani; Mohammad Javed Ansari; Sagheer Atta; Hamed Ali Ghramh; Tahira Batool; Muhammad Tariq. 2017. "Role of pollination in yield and physicochemical properties of tomatoes (Lycopersicon esculentum)." Saudi Journal of Biological Sciences 25, no. 7: 1291-1297.
Syed Tahir Ata-Ul-Karim; Yan Zhu; Qiang Cao; Muhammad Ishaq Asif Rehmani; Weixing Cao; Liang Tang. In-season assessment of grain protein and amylose content in rice using critical nitrogen dilution curve. European Journal of Agronomy 2017, 90, 139 -151.
AMA StyleSyed Tahir Ata-Ul-Karim, Yan Zhu, Qiang Cao, Muhammad Ishaq Asif Rehmani, Weixing Cao, Liang Tang. In-season assessment of grain protein and amylose content in rice using critical nitrogen dilution curve. European Journal of Agronomy. 2017; 90 ():139-151.
Chicago/Turabian StyleSyed Tahir Ata-Ul-Karim; Yan Zhu; Qiang Cao; Muhammad Ishaq Asif Rehmani; Weixing Cao; Liang Tang. 2017. "In-season assessment of grain protein and amylose content in rice using critical nitrogen dilution curve." European Journal of Agronomy 90, no. : 139-151.
Spatial variations in extreme precipitation events make hydrological, climatological, social, environmental and agricultural effects on a country. This study presents the spatiotemporal autocorrelation analysis of extreme precipitation events over Iran using gridded data on daily precipitation for the period 1961–2010. The 95th percentile is considered as extreme precipitation factor. The spatial autocorrelation of extreme precipitation is examined by three commonly used spatial autocorrelation statistics, the Gi statistic index, Moran’s I global index, and Local Moran’s I (LISA) index, at the 95 and 99% significant confidence level. The results showed a strong significant spatial autocorrelation for extreme precipitation events with the highest Moran’s I value in January. The positive significant autocorrelation of extreme precipitation is observed over the southern parts of the Caspian Sea and Zagros Mountains ranges, while the negative significant autocorrelation is observed over the central and eastern parts of country. In spring and summer the positive autocorrelation cores displace from the Zagros Mountains ranges to the northwestern and southeastern parts.
M. Darand; M. Dostkamyan; M. I. A. Rehmani. Spatial autocorrelation analysis of extreme precipitation in Iran. Russian Meteorology and Hydrology 2017, 42, 415 -424.
AMA StyleM. Darand, M. Dostkamyan, M. I. A. Rehmani. Spatial autocorrelation analysis of extreme precipitation in Iran. Russian Meteorology and Hydrology. 2017; 42 (6):415-424.
Chicago/Turabian StyleM. Darand; M. Dostkamyan; M. I. A. Rehmani. 2017. "Spatial autocorrelation analysis of extreme precipitation in Iran." Russian Meteorology and Hydrology 42, no. 6: 415-424.
Crop nutrient management is an essential component of any cropping system. With increasing concerns over environmental protection, improvement in fertilizer use efficiencies has become a prime goal in global agriculture system. Phosphorus (P) is one of the most important nutrients, and strategies are required to optimize its use in important arable crops like cotton (Gossypium hirsutum L.) that has great significance. Sustainable P use in crop production could significantly avoid environmental hazards resulting from over-P fertilization. Crop growth modeling has emerged as an effective tool to assess and predict the optimal nutrient requirements for different crops. In present study, Decision Support System for Agro-technology Transfer (DSSAT) sub-model CSM-CROPGRO-Cotton-P was evaluated to estimate the observed and simulated P use in two cotton cultivars grown at three P application rates under the semi-arid climate of southern Punjab, Pakistan. The results revealed that both the cultivars performed best at medium rate of P application (57 kg ha) in terms of days to anthesis, days to maturity, seed cotton yield, total dry matter production, and harvest index during 2013 and 2014. Cultivar FH-142 performed better than MNH-886 in terms of different yield components. There was a good agreement between observed and simulated days to anthesis (0 to 1 day), days to maturity (0 to 2 days), seed cotton yield, total dry matter, and harvest index with an error of -4.4 to 15%, 12-7.5%, and 13-9.5% in MNH-886 and for FH-142, 4-16%, 19-11%, and 16-8.3% for growing years 2013 and 2014, respectively. CROPGRO-Cotton-P would be a useful tool to forecast cotton yield under different levels of P in cotton production system of the semi-arid climate of Southern Punjab.
Asad Amin; Wajid Nasim; Muhammad Mubeen; Muhammad Nadeem; Liaqat Ali; Hafiz Mohkum Hammad; Syeda Refat Sultana; Khawar Jabran; M. Habib Ur Rehman; Shakeel Ahmad; Muhammad Awais; Atta Rasool; Shah Fahad; Shah Saud; Adnan Noor Shah; Zahid Ihsan; Shahzad Ali; Ali Bajwa; Khalid Rehman Hakeem; Asif Ameen; Amanullah; Hafeez Ur Rehman; Fahad Alghabar; Ghulam Hussain Jatoi; Muhammad Akram; Aziz Khan; Faisal Islam; Syed Tahir Ata-Ul-Karim; Muhammad Ishaq Asif Rehmani; Sajid Hussain; Muhammad Razaq; Amin Fathi. Optimizing the phosphorus use in cotton by using CSM-CROPGRO-cotton model for semi-arid climate of Vehari-Punjab, Pakistan. Environmental Science and Pollution Research 2017, 24, 5811 -5823.
AMA StyleAsad Amin, Wajid Nasim, Muhammad Mubeen, Muhammad Nadeem, Liaqat Ali, Hafiz Mohkum Hammad, Syeda Refat Sultana, Khawar Jabran, M. Habib Ur Rehman, Shakeel Ahmad, Muhammad Awais, Atta Rasool, Shah Fahad, Shah Saud, Adnan Noor Shah, Zahid Ihsan, Shahzad Ali, Ali Bajwa, Khalid Rehman Hakeem, Asif Ameen, Amanullah, Hafeez Ur Rehman, Fahad Alghabar, Ghulam Hussain Jatoi, Muhammad Akram, Aziz Khan, Faisal Islam, Syed Tahir Ata-Ul-Karim, Muhammad Ishaq Asif Rehmani, Sajid Hussain, Muhammad Razaq, Amin Fathi. Optimizing the phosphorus use in cotton by using CSM-CROPGRO-cotton model for semi-arid climate of Vehari-Punjab, Pakistan. Environmental Science and Pollution Research. 2017; 24 (6):5811-5823.
Chicago/Turabian StyleAsad Amin; Wajid Nasim; Muhammad Mubeen; Muhammad Nadeem; Liaqat Ali; Hafiz Mohkum Hammad; Syeda Refat Sultana; Khawar Jabran; M. Habib Ur Rehman; Shakeel Ahmad; Muhammad Awais; Atta Rasool; Shah Fahad; Shah Saud; Adnan Noor Shah; Zahid Ihsan; Shahzad Ali; Ali Bajwa; Khalid Rehman Hakeem; Asif Ameen; Amanullah; Hafeez Ur Rehman; Fahad Alghabar; Ghulam Hussain Jatoi; Muhammad Akram; Aziz Khan; Faisal Islam; Syed Tahir Ata-Ul-Karim; Muhammad Ishaq Asif Rehmani; Sajid Hussain; Muhammad Razaq; Amin Fathi. 2017. "Optimizing the phosphorus use in cotton by using CSM-CROPGRO-cotton model for semi-arid climate of Vehari-Punjab, Pakistan." Environmental Science and Pollution Research 24, no. 6: 5811-5823.
Non-destructive assessment of plant nitrogen (N) status is essential for efficient crop production and N management in intensive rice (Oryza sativa L.) cropping systems. Chlorophyll meter (SPAD-502) has been widely used as a rapid, non-destructive and cost-effective diagnostic tool for in-season assessment of crop N status. The present study was intended to establish the quantitative relationships between chlorophyll meters readings, plant N concentration (PNC), N nutrition index (NNI), accumulated N deficit (AND), and N requirement (NR), as well as to compare the stability of these relationships at different vegetative growth stages in Japonica and Indica rice cultivars. Seven multi-locational field experiments using varied N rates and seven rice cultivars were conducted in east China. The results showed that the PNC and chlorophyll meters readings increased with increasing N application rates across the cultivars, growing seasons, and sites. The PNC and chlorophyll meters readings under varied N rates ranged from 2.29 to 3.21, 1.06 to 1.82 and 37.10 to 45.4 and 37.30 to 46.6, respectively, at TL and HD stages for Japonica rice cultivars, while they ranged from 2.25 to 3.23, 1.34 to 1.91 and 35.6 to 43.3 and 37.3 to 45.5 for Indica rice cultivars, respectively. The quantitative relationships between chlorophyll meters readings, PNC, NNI, AND, and NR established at different crop growth stages in two rice ecotypes, were highly significant with R2 values ranging from 0.69 to 0.93 and 0.71 to 0.86 for Japonica and Indica rice, respectively. The strongest relationships were observed for AND and NR at panicle initiation and booting stages in both rice ecotypes. The validation of the relationships developed in the present study with an independent data exhibited a solid model performance and confirmed their robustness as a reliable and rapid diagnostic tool for in-season estimation of plant N parameters for sustainable N management in rice. The results of this study will offer a suitable approach for managing N application precisely during the growth period of the rice crop in intensive rice cropping systems in east China.
Syed Tahir Ata-Ul-Karim; Qiang Cao; Yan Zhu; Liang Tang; Muhammad Ishaq Asif Rehmani; Weixing Cao. Non-destructive Assessment of Plant Nitrogen Parameters Using Leaf Chlorophyll Measurements in Rice. Frontiers in Plant Science 2016, 7, 1829 .
AMA StyleSyed Tahir Ata-Ul-Karim, Qiang Cao, Yan Zhu, Liang Tang, Muhammad Ishaq Asif Rehmani, Weixing Cao. Non-destructive Assessment of Plant Nitrogen Parameters Using Leaf Chlorophyll Measurements in Rice. Frontiers in Plant Science. 2016; 7 ():1829.
Chicago/Turabian StyleSyed Tahir Ata-Ul-Karim; Qiang Cao; Yan Zhu; Liang Tang; Muhammad Ishaq Asif Rehmani; Weixing Cao. 2016. "Non-destructive Assessment of Plant Nitrogen Parameters Using Leaf Chlorophyll Measurements in Rice." Frontiers in Plant Science 7, no. : 1829.
Unbalanced climate during the last decades has created spatially alarming and destructive situations in the world. Anomalies in temperature and precipitation enhance the risks for crop production in large agricultural region (especially the Southern Punjab) of Pakistan. Detailed analysis of historic weather data (1980–2011) record helped in creating baseline data to compare with model projection (SimCLIM) for regional level. Ensemble of 40 GCMs used for climatic projections with greenhouse gas (GHG) representative concentration pathways (RCP-4.5, 6.0, 8.5) was selected on the baseline comparison and used for 2025 and 2050 climate projection. Precipitation projected by ensemble and regional weather observatory at baseline showed highly unpredictable nature while both temperature extremes showed 95 % confidence level on a monthly projection. Percentage change in precipitation projected by model with RCP-4.5, RCP-6.0, and RCP-8.5 showed uncertainty 3.3 to 5.6 %, 2.9 to 5.2 %, and 3.6 to 7.9 % for 2025 and 2050, respectively. Percentage change of minimum temperature from base temperature showed that 5.1, 4.7, and 5.8 % for 2025 and 9.0, 8.1, and 12.0 % increase for projection year 2050 with RCP-4.5, 6.0, and 8.5 and maximum temperature 2.7, 2.5, and 3.0 % for 2025 and 4.7, 4.4, and 6.4 % for 2050 will be increased with RCP-4.5, 6.0, and 8.5, respectively. Uneven increase in precipitation and asymmetric increase in temperature extremes in future would also increase the risk associated with management of climatic uncertainties. Future climate projection will enable us for better risk management decisions.
Asad Amin; Wajid Nasim; Muhammad Mubeen; Saleem Sarwar; Peter Urich; Ashfaq Ahmad; Aftab Wajid; Tasneem Khaliq; Fahd Rasul; Hafiz Mohkum Hammad; Muhammad Ishaq Asif Rehmani; Hussani Mubarak; Nosheen Mirza; Abdul Wahid; Shakeel Ahamd; Shah Fahad; Abid Ullah; Mohammad Nauman Khan; Asif Ameen; Amanullah; Babar Shahzad; Shah Saud; Hesham Alharby; Syed Tahir Ata-Ul-Karim; Muhammad Adnan; Faisal Islam; Qazi Shoaib Ali. Regional climate assessment of precipitation and temperature in Southern Punjab (Pakistan) using SimCLIM climate model for different temporal scales. Theoretical and Applied Climatology 2016, 131, 121 -131.
AMA StyleAsad Amin, Wajid Nasim, Muhammad Mubeen, Saleem Sarwar, Peter Urich, Ashfaq Ahmad, Aftab Wajid, Tasneem Khaliq, Fahd Rasul, Hafiz Mohkum Hammad, Muhammad Ishaq Asif Rehmani, Hussani Mubarak, Nosheen Mirza, Abdul Wahid, Shakeel Ahamd, Shah Fahad, Abid Ullah, Mohammad Nauman Khan, Asif Ameen, Amanullah, Babar Shahzad, Shah Saud, Hesham Alharby, Syed Tahir Ata-Ul-Karim, Muhammad Adnan, Faisal Islam, Qazi Shoaib Ali. Regional climate assessment of precipitation and temperature in Southern Punjab (Pakistan) using SimCLIM climate model for different temporal scales. Theoretical and Applied Climatology. 2016; 131 (1-2):121-131.
Chicago/Turabian StyleAsad Amin; Wajid Nasim; Muhammad Mubeen; Saleem Sarwar; Peter Urich; Ashfaq Ahmad; Aftab Wajid; Tasneem Khaliq; Fahd Rasul; Hafiz Mohkum Hammad; Muhammad Ishaq Asif Rehmani; Hussani Mubarak; Nosheen Mirza; Abdul Wahid; Shakeel Ahamd; Shah Fahad; Abid Ullah; Mohammad Nauman Khan; Asif Ameen; Amanullah; Babar Shahzad; Shah Saud; Hesham Alharby; Syed Tahir Ata-Ul-Karim; Muhammad Adnan; Faisal Islam; Qazi Shoaib Ali. 2016. "Regional climate assessment of precipitation and temperature in Southern Punjab (Pakistan) using SimCLIM climate model for different temporal scales." Theoretical and Applied Climatology 131, no. 1-2: 121-131.
Muhammad Ishaq Asif Rehmani. Delayed wheat (Triticum aestivum L.) cultivation and role of diverse seeding rates and row spacings under semiarid agro-climatic situations. Pure and Applied Biology 2016, 5, 72 -85.
AMA StyleMuhammad Ishaq Asif Rehmani. Delayed wheat (Triticum aestivum L.) cultivation and role of diverse seeding rates and row spacings under semiarid agro-climatic situations. Pure and Applied Biology. 2016; 5 (1):72-85.
Chicago/Turabian StyleMuhammad Ishaq Asif Rehmani. 2016. "Delayed wheat (Triticum aestivum L.) cultivation and role of diverse seeding rates and row spacings under semiarid agro-climatic situations." Pure and Applied Biology 5, no. 1: 72-85.
Rice production is challenged by asymmetric rise in day and night temperatures. Efforts are required to improve our understanding about the impact of climate change induced asymmetrical fluctuations in temperature extremes. This paper presents first effort to investigate effect of post-anthesis asymmetric daytime, nighttime and diel warming, as predicted under low emission scenario (B1) of Intergovernmental Panel on Climate Change (IPCC), on yield and milling quality of two indica rice hybrids, Teyou-559 (susceptible) and Shanyou-63 (resistant), differing in response to temperature. Four canopy warming regimes, ambient reference (AT), daytime warming (HDT, +1.3 °C), nighttime warming (HNT, +2.7 °C), and diel warming (HDNT, +1.3/2.7 °C), were imposed through free-air temperature enhancement (FATE) facility using infrared heaters. Both hybrids responded differentially to daytime, nighttime and diel warming and shortened grain filling duration (1–2 days), reduced grain yield and 1000-grain weight were determined. Nighttime warming caused more deleterious impact than daytime or diel warming. These results indicate that the daytime (−4%), nighttime (−7%) and diel (−6%) warming under low emission scenario will have differential effects on rice production. This reduction is mainly due to differential decrease in grain weight. Resistant Shanyou-63 proved to be more susceptible to daytime warming, while susceptible Teyou-559 was affected more by nighttime and diel warming. Diel warming had significantly negative influence on head rice recovery of both cultivars, with slight inter-annual variation, followed by nighttime and daytime warming. Reduction in head rice recovery indicated the breakage of rice kernels. Daytime warming had greater effect on grain yield 1000-grain weight than nighttime warming considering per 1 °C warming. Effect of warming on yield and quality can be attributed to reduction in translocation of photosynthates during grain filling, resulting in reduced grain filling, grain weight and development of chalky kernels. Further studies are required to elucidate mechanism underlying differential response to asymmetric warming and to suggest appropriate management practices to minimize yield loses.
Muhammad Ishaq Asif Rehmani; Guangbin Wei; Nazim Hussain; Chengqiang Ding; Ganghua Li; Zhenghui Liu; Shaohua Wang; Yanfeng Ding. Yield and quality responses of two indica rice hybrids to post-anthesis asymmetric day and night open-field warming in lower reaches of Yangtze River delta. Field Crops Research 2013, 156, 231 -241.
AMA StyleMuhammad Ishaq Asif Rehmani, Guangbin Wei, Nazim Hussain, Chengqiang Ding, Ganghua Li, Zhenghui Liu, Shaohua Wang, Yanfeng Ding. Yield and quality responses of two indica rice hybrids to post-anthesis asymmetric day and night open-field warming in lower reaches of Yangtze River delta. Field Crops Research. 2013; 156 ():231-241.
Chicago/Turabian StyleMuhammad Ishaq Asif Rehmani; Guangbin Wei; Nazim Hussain; Chengqiang Ding; Ganghua Li; Zhenghui Liu; Shaohua Wang; Yanfeng Ding. 2013. "Yield and quality responses of two indica rice hybrids to post-anthesis asymmetric day and night open-field warming in lower reaches of Yangtze River delta." Field Crops Research 156, no. : 231-241.