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I am a plant breeder, working on improving tolerance to different abiotic stresses and resilience to climate change in field crops using classical and modern plant breeding tools. I obtained a European Ph.D. in Plant Breeding and Genetics in April 2013, Lleida University (UdL), Spain, with a cum laude designation. My thesis was titled, “Analysis of the efficiency in the Spanish National Barley Breeding Program. Past results and prospects for future improvements using molecular markers”. I obtained an M.Sc. in Plant Breeding and Genetics (120 ECTS), October 2010, Lleida University (UdL), Spain, joint with the Mediterranean Agronomic Institute of Zaragoza, Spain (IAMZ), the International Centre for Advanced Mediterranean Agronomic Studies (CIHEAM), with a cum laude designation. My thesis was titled, “Yield gain and genotype by environment interaction in the Spanish National Barley Breeding Program”.
Water-deficit stress poses tremendous constraints to sustainable agriculture, particularly under abrupt climate change. Hence, it is crucial to find eco-friendly approaches to ameliorate drought tolerance, especially for sensitive crops such as maize. This study aimed at assessing the impact of seed halo-priming on seedling vigor, grain yield, and water use efficiency of maize under various irrigation regimes. Laboratory trials evaluated the influence of seed halo-priming using two concentrations of sodium chloride solution, 4000 and 8000 ppm NaCl, versus unprimed seeds on seed germination and seedling vigor parameters. Field trials investigated the impact of halo-priming treatments on maize yield and water use efficiency (WUE) under four irrigation regimes comprising excessive (120% of estimated crop evapotranspiration, ETc), normal (100% ETc), and deficit (80 and 60% ETc) irrigation regimes. Over-irrigation by 20% did not produce significantly more grain yield but considerably reduced WUE. Deficit irrigation (80 and 60%ETc) gradually reduced grain yield and its attributes. Halo-priming treatments, particularly 4000 ppm NaCl, improved uniformity and germination speed, increased germination percentage and germination index, and produced more vigorous seedlings with heavier dry weight compared with unprimed seeds. Under field conditions, the plants originated from halo-primed seeds, especially with 4000 ppm NaCl, had higher grain yield and WUE compared with unprimed seeds under deficit irrigation regimes. The long-lasting stress memory induced by seed halo-priming, particularly with 4000 ppm NaCl, promoted maize seedling establishment, grain yield, and WUE and consequently mitigated the devastating impacts of drought stress.
Abdallah El-Sanatawy; Salwa Ash-Shormillesy; Naglaa Qabil; Mohamed Awad; Elsayed Mansour. Seed Halo-Priming Improves Seedling Vigor, Grain Yield, and Water Use Efficiency of Maize under Varying Irrigation Regimes. Water 2021, 13, 2115 .
AMA StyleAbdallah El-Sanatawy, Salwa Ash-Shormillesy, Naglaa Qabil, Mohamed Awad, Elsayed Mansour. Seed Halo-Priming Improves Seedling Vigor, Grain Yield, and Water Use Efficiency of Maize under Varying Irrigation Regimes. Water. 2021; 13 (15):2115.
Chicago/Turabian StyleAbdallah El-Sanatawy; Salwa Ash-Shormillesy; Naglaa Qabil; Mohamed Awad; Elsayed Mansour. 2021. "Seed Halo-Priming Improves Seedling Vigor, Grain Yield, and Water Use Efficiency of Maize under Varying Irrigation Regimes." Water 13, no. 15: 2115.
High temperature is a major environmental stress that devastatingly affects wheat production. Thenceforth, developing heat-tolerant and high-yielding wheat genotypes has become more critical to sustaining wheat production particularly under abrupt climate change and fast-growing global population. The present study aimed to evaluate parental genotypes and their cross combinations under normal and heat stress conditions, exploring their diversity based on dehydration-responsive element-binding 2 gene (DREB, stress tolerance gene in response to abiotic stress) in parental genotypes, and determining gene action controlling yield traits through half-diallel analysis. Six diverse bread wheat genotypes (local and exotic) and their 15 F1 hybrids were evaluated at two different locations under timely and late sowing dates. Sowing date, location, genotype, and their interactions significantly impacted the studied traits; days to heading, chlorophyll content, plant height, grain yield, and its attributes. Cluster analysis classified the parents and their crosses into four groups varying from heat-tolerant to heat-sensitive based on heat tolerance indices. The parental genotypes P2 and P4 were identified as an excellent source of beneficial alleles for earliness and high yielding under heat stress. This was corroborated by DNA sequence analysis of DREB transcription factors. They were the highest homologies for dehydrin gene sequence with heat-tolerant wheat species. The hybrid combinations of P1 × P5, P1 × P6, P2 × P4, and P3 × P5 were detected to be good specific combiners for grain yield and its attributes under heat stress conditions. These designated genotypes could be used in wheat breeding for developing heat-tolerant and climate-resilient cultivars. The non-additive genetic variances were preponderant over additive genetic variances for grain yield and most traits under both sowing dates. The narrow-sense heritability ranged from low to moderate for most traits. Strong positive associations were detected between grain yield and each of chlorophyll content, plant height, number of grains/spike, and thousand-grain weights, which suggest their importance for indirect selection under heat stress, especially in early generations, due to the effortlessness of their measurement.
Mohamed M. Kamara; Khaled M. Ibrahim; Elsayed Mansour; Ahmed M. S. Kheir; Mousa O. Germoush; Diaa Abd El-Moneim; Mohamed I. Motawei; Ahmed Y. Alhusays; Mona Ali Farid; Medhat Rehan. Combining Ability and Gene Action Controlling Grain Yield and Its Related Traits in Bread Wheat under Heat Stress and Normal Conditions. Agronomy 2021, 11, 1450 .
AMA StyleMohamed M. Kamara, Khaled M. Ibrahim, Elsayed Mansour, Ahmed M. S. Kheir, Mousa O. Germoush, Diaa Abd El-Moneim, Mohamed I. Motawei, Ahmed Y. Alhusays, Mona Ali Farid, Medhat Rehan. Combining Ability and Gene Action Controlling Grain Yield and Its Related Traits in Bread Wheat under Heat Stress and Normal Conditions. Agronomy. 2021; 11 (8):1450.
Chicago/Turabian StyleMohamed M. Kamara; Khaled M. Ibrahim; Elsayed Mansour; Ahmed M. S. Kheir; Mousa O. Germoush; Diaa Abd El-Moneim; Mohamed I. Motawei; Ahmed Y. Alhusays; Mona Ali Farid; Medhat Rehan. 2021. "Combining Ability and Gene Action Controlling Grain Yield and Its Related Traits in Bread Wheat under Heat Stress and Normal Conditions." Agronomy 11, no. 8: 1450.
Drought is one of the major threats to global food security. Biochar use in agriculture has received much attention and improving it through chemical modification offers a potential approach for enhancing crop productivity. There is still limited knowledge on how acidified biochar influences soil properties, and consequently its influences on the agricultural productivity of drought stressed plants. The water use efficiency (I-WUE) of drought stressed faba beans was investigated through the effects of acidified biochar (ACBio) (a 3:100 (w:w) combination of citric acid and biochar) on soil properties, growth, productivity, nutrient uptake, water productivity (WP), and irrigation. Two field experiments (2016/2017 and 2017/2018) were conducted in saline soil (ECe, 7.2 dS m−1) on faba been plants grown under three irrigation regimes (i.e., 100, 80, and 60% of crop evapotranspiration (ETc)) combined with three levels of ACBio (0, 5, and 10 t ha−1). Plants exposed to water stress presented a significant decrease in plant height, dry matter, leave area, chlorophyll content (SPAD), the quantum efficiency of photosystem II (Fv/Fm, Fv/F0, and PI), water status (membrane stability index and relative water content), and seed yield. Acidified biochar soil incorporation improved soil properties (chemical and physical), plant growth, physiological responses, WP, I-WUE, and contents of N, P, K, and Ca. Results revealed that the application of ACBio at 10 t ha−1 and 5 t ha−1 significantly increased seed yield by 38.7 and 25.8%, respectively, compared to the control. Therefore, ACBio incorporation may find application in the future as a potential soil amendment for improving growth and productivity of faba bean plants under deficit irrigation.
Taia Abd El-Mageed; Eman Belal; Mohamed Rady; Shimaa Abd El-Mageed; Elsayed Mansour; Mohamed Awad; Wael Semida. Acidified Biochar as a Soil Amendment to Drought Stressed (Vicia faba L.) Plants: Influences on Growth and Productivity, Nutrient Status, and Water Use Efficiency. Agronomy 2021, 11, 1290 .
AMA StyleTaia Abd El-Mageed, Eman Belal, Mohamed Rady, Shimaa Abd El-Mageed, Elsayed Mansour, Mohamed Awad, Wael Semida. Acidified Biochar as a Soil Amendment to Drought Stressed (Vicia faba L.) Plants: Influences on Growth and Productivity, Nutrient Status, and Water Use Efficiency. Agronomy. 2021; 11 (7):1290.
Chicago/Turabian StyleTaia Abd El-Mageed; Eman Belal; Mohamed Rady; Shimaa Abd El-Mageed; Elsayed Mansour; Mohamed Awad; Wael Semida. 2021. "Acidified Biochar as a Soil Amendment to Drought Stressed (Vicia faba L.) Plants: Influences on Growth and Productivity, Nutrient Status, and Water Use Efficiency." Agronomy 11, no. 7: 1290.
Natural extracts and biostimulants have recently been used to enhance growth and productivity of stressed plants. A pots trial was performed to verify the impacts of maize grain (MgE, 60 g L−1) and/or propolis (PrmE, 40 g L−1) extract foliar application (three times) on growth, physio-biochemical attributes, and productivity of faba bean plants exposed to drought (40% of soil capacity), salinity (150 mM NaCl), or cadmium (2.0 mM Cd2+) stress versus absence of stress as a control. Alterations in the antioxidant system and its relationship with stress tolerance were also examined. The results indicated that each stress caused a significant decrease in yield traits, photosynthetic efficiency, pigment contents, gas exchange, relative water content, membrane stability index, and osmolyte contents compared to non-stressed plants. Otherwise, MgE and/or PrmE enhanced the plant's stress tolerance and increased the aforementioned attributes under normal or stress conditions. Moreover, MgE and/or PrmE increased enzymatic activities (SOD, CAT, POX, and APX) and antioxidant levels (proline, glutathione, ascorbate, and α-tocopherol) under the studied stresses compared to untreated controls. The combined MgE+PrmE was the most efficient treatment. Salinity considerably increased Na+ content, whereas, MgE+PrmE treatment reduced Na content by 39.6, 16.7, or 37.0% under salinity, drought, or Cd2+ stress, respectively. Under Cd2+ stress, the best treatment (MgE+PrmE) reduced root and leaf Cd2+ contents by 74.1 and 78.6%, respectively compared to untreated plants. Our findings indicated that foliarly-applied MgE+PrmE was highly effective in enhancing the antioxidant machinery, thus reducing ROS, Na+, and Cd2+ levels resulting in increased plant productivity under salinity, drought, or Cd2+ stress.
El-Sayed M. Desoky; Ahmed S. Elrys; Elsayed Mansour; Rania S.M. Eid; Eman Selem; Mostafa M. Rady; Esmat F. Ali; Gaber.A.M. Mersal; Wael M. Semida. Application of biostimulants promotes growth and productivity by fortifying the antioxidant machinery and suppressing oxidative stress in faba bean under various abiotic stresses. Scientia Horticulturae 2021, 288, 110340 .
AMA StyleEl-Sayed M. Desoky, Ahmed S. Elrys, Elsayed Mansour, Rania S.M. Eid, Eman Selem, Mostafa M. Rady, Esmat F. Ali, Gaber.A.M. Mersal, Wael M. Semida. Application of biostimulants promotes growth and productivity by fortifying the antioxidant machinery and suppressing oxidative stress in faba bean under various abiotic stresses. Scientia Horticulturae. 2021; 288 ():110340.
Chicago/Turabian StyleEl-Sayed M. Desoky; Ahmed S. Elrys; Elsayed Mansour; Rania S.M. Eid; Eman Selem; Mostafa M. Rady; Esmat F. Ali; Gaber.A.M. Mersal; Wael M. Semida. 2021. "Application of biostimulants promotes growth and productivity by fortifying the antioxidant machinery and suppressing oxidative stress in faba bean under various abiotic stresses." Scientia Horticulturae 288, no. : 110340.
Cadmium (Cd) is a nonessential and extremely toxic element that destructively impacts agricultural production. Accordingly, developing tolerant-Cd as well as low-grain Cd genotypes is considered a promising approach to cope with the pollution problem. The current study aimed at understanding inheritance nature of Cd tolerance and detect Cd-tolerant and low-grain Cd genotypes in bread wheat. Six parents were selected based on their Cd tolerance and were genotyped using triple-RAPD and ISSR markers to investigate their genetic diversity. The selected parents were crossed and the realized F1s were selfed to produce F2 populations and were backcrossed with their own parents to produce BC1 and BC2 populations. Six populations for each cross comprised P1, P2, F1, F2, BC1 and BC2 were evaluated in two adjacent experiments under non-Cd stressed and Cd-stressed conditions. Significant positive relative and standard heterosis were detected for flag leaf area, leaf chlorophyll content, proline content, Cd concentration and grain yield/plant under Cd-stressed condition. Dominance gene effect was more pronounced in controlling the evaluated traits in most cases. F values coupled with F/√H×D ratio were positive for Cd concentration and Cd sensitivity index in the three crosses under both conditions. Heritability estimates from offspring regression were high (< 50%) for flag leaf area, leaf chlorophyll content, proline content, Cd concentration while, moderately low for grain yield/plant and Cd sensitivity index. Prediction results revealed to high transgressive segregates and exceeding F1 with best-inbred line (P max) that have all favorable alleles were obtained from 3rd cross for flag leaf area, low Cd concentration and Cd sensitivity index under Cd-stressed conditions.
Hassan A. Awaad; Ahmed M. Alzohairy; Amgad M. Morsy; Ehab S.A. Moustafa; Elsayed Mansour. Genetic Analysis of Cadmium Tolerance And Exploring Its Inheritance Nature In Bread Wheat. 2021, 1 .
AMA StyleHassan A. Awaad, Ahmed M. Alzohairy, Amgad M. Morsy, Ehab S.A. Moustafa, Elsayed Mansour. Genetic Analysis of Cadmium Tolerance And Exploring Its Inheritance Nature In Bread Wheat. . 2021; ():1.
Chicago/Turabian StyleHassan A. Awaad; Ahmed M. Alzohairy; Amgad M. Morsy; Ehab S.A. Moustafa; Elsayed Mansour. 2021. "Genetic Analysis of Cadmium Tolerance And Exploring Its Inheritance Nature In Bread Wheat." , no. : 1.
Salinity is a major abiotic stress that poses great obstacles to wheat production, especially in arid regions. The application of exogenous substances can enhance plant salt tolerance and increase its productivity under salinity stress. This work aimed to assess the mechanisms of selenium (Se) at different concentrations (2, 4 and 8 μM SeCl2) to mitigate hazardous impacts of salt toxicity at physiological, biochemical and agronomic levels in bread wheat. The results displayed that Se foliar application increased chlorophyll content, net photosynthetic rate, transpiration rate, stomatal conductance, relative water content, membrane stability index, excised leaf water retention, proline, total soluble sugars, Ca content, K content, antioxidant enzyme activities and non-enzymatic antioxidant compounds compared to untreated plants. On the other hand, Se application decreased the content of Na, hydrogen peroxide and superoxide contents. Accordingly, our findings recommend exogenous Se application (in particular 8 μM) to alleviate the deleterious effects induced by salinity stress and improve wheat yield attributes through enhancing antioxidant defense systems and photosynthetic capacity.
El-Sayed Desoky; Abdel-Rahman Merwad; Mohamed Abo El-Maati; Elsayed Mansour; Safaa Arnaout; Mohamed Awad; Mohamed Ramadan; Seham Ibrahim. Physiological and Biochemical Mechanisms of Exogenously Applied Selenium for Alleviating Destructive Impacts Induced by Salinity Stress in Bread Wheat. Agronomy 2021, 11, 926 .
AMA StyleEl-Sayed Desoky, Abdel-Rahman Merwad, Mohamed Abo El-Maati, Elsayed Mansour, Safaa Arnaout, Mohamed Awad, Mohamed Ramadan, Seham Ibrahim. Physiological and Biochemical Mechanisms of Exogenously Applied Selenium for Alleviating Destructive Impacts Induced by Salinity Stress in Bread Wheat. Agronomy. 2021; 11 (5):926.
Chicago/Turabian StyleEl-Sayed Desoky; Abdel-Rahman Merwad; Mohamed Abo El-Maati; Elsayed Mansour; Safaa Arnaout; Mohamed Awad; Mohamed Ramadan; Seham Ibrahim. 2021. "Physiological and Biochemical Mechanisms of Exogenously Applied Selenium for Alleviating Destructive Impacts Induced by Salinity Stress in Bread Wheat." Agronomy 11, no. 5: 926.
Late wilt disease (LWD) caused by the fungus Magnaporthiopsis maydis poses a major threat to maize production. Developing high-yielding and resistant hybrids is vital to cope with this destructive disease. The present study aimed at assessing general (GCA) and specific (SCA) combining abilities for agronomic traits and resistance to LWD, identifying high-yielding hybrids with high resistance to LWD, determining the parental genetic distance (GD) using SSR markers and investigating its relationship with hybrid performance and SCA effects. Ten diverse yellow maize inbred lines assembled from different origins and three high-yielding testers were crossed using line × tester mating design. The obtained 30 test-crosses plus the check hybrid TWC-368 were evaluated in two field trials. Earliness and agronomic traits were evaluated in two different locations. While resistance to LWD was tested under two nitrogen levels (low and high levels) in a disease nursery that was artificially infected by the pathogen Magnaporthiopsis maydis. Highly significant differences were detected among the evaluated lines, testers, and their corresponding hybrids for most measured traits. The non-additive gene action had more important role than the additive one in controlling the inheritance of earliness, grain yield, and resistance to LWD. The inbred lines L4 and L5 were identified as an excellent source of favorable alleles for high yielding and resistance to LWD. Four hybrids L5 × T1, L9 × T1, L4 × T2, and L5 × T2, exhibited earliness, high grain yield, and high resistance to LWD. Parental GD ranged from 0.60 to 0.97, with an average of 0.81. The dendrogram grouped the parental genotypes into three main clusters, which could help in reducing number of generated crosses that will be evaluated in field trials. SCA displayed significant association with the hybrid performance for grain yield and resistance to LWD, which suggests SCA is a good predictor for grain yield and resistance to LWD.
Mohamed Kamara; Nasr Ghazy; Elsayed Mansour; Mohsen Elsharkawy; Ahmed Kheir; Khaled Ibrahim. Molecular Genetic Diversity and Line × Tester Analysis for Resistance to Late Wilt Disease and Grain Yield in Maize. Agronomy 2021, 11, 898 .
AMA StyleMohamed Kamara, Nasr Ghazy, Elsayed Mansour, Mohsen Elsharkawy, Ahmed Kheir, Khaled Ibrahim. Molecular Genetic Diversity and Line × Tester Analysis for Resistance to Late Wilt Disease and Grain Yield in Maize. Agronomy. 2021; 11 (5):898.
Chicago/Turabian StyleMohamed Kamara; Nasr Ghazy; Elsayed Mansour; Mohsen Elsharkawy; Ahmed Kheir; Khaled Ibrahim. 2021. "Molecular Genetic Diversity and Line × Tester Analysis for Resistance to Late Wilt Disease and Grain Yield in Maize." Agronomy 11, no. 5: 898.
Water shortage is a major environmental stress that destructively impacts maize production, particularly in arid regions. Therefore, improving irrigation management and increasing productivity per unit of water applied are needed, especially under the rising temperature and precipitation fluctuations induced by climate change. Laboratory and field trials were carried out in the present study, which were aimed at assessing the possibility of promoting maize germination, growth, grain yield and crop water productivity (CWP) using seed priming under different irrigation regimes. Two seed priming treatments, i.e., hydro-priming and hardening versus unprimed seeds, were applied under four irrigation regimes, i.e., 120, 100, 80 and 60% of estimated crop evapotranspiration (ETc). The obtained results indicated that increasing irrigation water from 100% up to 120% ETc did not significantly increase grain yield or contributing traits, while it decreased CWP. Deficit irrigation of 80 and 60% ETc gradually decreased grain yield and all attributed traits. Seed priming significantly ameliorated seedlings’ vigor as indicated by earlier germination, higher germination percentage, longer roots and shoots, and heavier fresh and dry weight than unprimed seeds with the superiority of hardening treatment. Additionally, under field conditions, seed priming significantly increased grain yield, yield contributing traits and CWP compared with unprimed treatment. Interestingly, the results reflect the role of seed priming, particularly hardening, in mitigating negative impacts of drought stress and enhancing maize growth, grain yield and attributed traits as well as CWP under deficit irrigation conditions. This was demonstrated by a significant increase in grain yield and CWP under moderate drought and severe drought conditions compared with unprimed treatment. These results highlight that efficient irrigation management and seed priming can increase maize yield and water productivity in arid environments.
Abdallah El-Sanatawy; Ahmed El-Kholy; Mohamed Ali; Mohamed Awad; Elsayed Mansour. Maize Seedling Establishment, Grain Yield and Crop Water Productivity Response to Seed Priming and Irrigation Management in a Mediterranean Arid Environment. Agronomy 2021, 11, 756 .
AMA StyleAbdallah El-Sanatawy, Ahmed El-Kholy, Mohamed Ali, Mohamed Awad, Elsayed Mansour. Maize Seedling Establishment, Grain Yield and Crop Water Productivity Response to Seed Priming and Irrigation Management in a Mediterranean Arid Environment. Agronomy. 2021; 11 (4):756.
Chicago/Turabian StyleAbdallah El-Sanatawy; Ahmed El-Kholy; Mohamed Ali; Mohamed Awad; Elsayed Mansour. 2021. "Maize Seedling Establishment, Grain Yield and Crop Water Productivity Response to Seed Priming and Irrigation Management in a Mediterranean Arid Environment." Agronomy 11, no. 4: 756.
Dual-purpose barley is an alternative approach to producing high-quality forage yield plus an acceptable grain yield in marginal environments of arid regions that are characterized by lack of forage. Field experiment was performed in two consecutive growing seasons at an arid region affected by salinity in irrigation water and soil at Western Sinai Peninsula in Egypt. The study aimed to optimize sowing date and screen salt-tolerant barley genotypes that perform better in terms of forage yield and quality as well as grain and biomass yield production in salt-affected environment. Sowing dates, genotypes, and their interaction significantly impacted most of the studied variables such as forage yield, crude protein yield, and grain and biomass yields. The early sowing in late October yielded higher than intermediate sowing in mid-November and late sowing in early December. Some of the tested genotypes performed better than others as indicated by about 50% higher forage yield, 6% crude protein content, 39% grain and 21% biological yields (total aboveground dry matter), suggesting higher adaptation capacity. Interestingly, grain and biological yields did not differ significantly between dual-purpose approach and grain-only pattern. In conclusion, dual-purpose barley was found favorable for producing grain and forage production in similar environments under early sowing date.
Ehab Moustafa; El-Sayed El-Sobky; Hossam Farag; Mohamed Yasin; Ahmed Attia; Mohamed Rady; Mohamed Awad; Elsayed Mansour. Sowing Date and Genotype Influence on Yield and Quality of Dual-Purpose Barley in a Salt-Affected Arid Region. Agronomy 2021, 11, 717 .
AMA StyleEhab Moustafa, El-Sayed El-Sobky, Hossam Farag, Mohamed Yasin, Ahmed Attia, Mohamed Rady, Mohamed Awad, Elsayed Mansour. Sowing Date and Genotype Influence on Yield and Quality of Dual-Purpose Barley in a Salt-Affected Arid Region. Agronomy. 2021; 11 (4):717.
Chicago/Turabian StyleEhab Moustafa; El-Sayed El-Sobky; Hossam Farag; Mohamed Yasin; Ahmed Attia; Mohamed Rady; Mohamed Awad; Elsayed Mansour. 2021. "Sowing Date and Genotype Influence on Yield and Quality of Dual-Purpose Barley in a Salt-Affected Arid Region." Agronomy 11, no. 4: 717.
The influence of 24-epibrassinolide (EBR24), applied to leaves at a concentration of 5 μM, on plant physio-biochemistry and its reflection on crop water productivity (CWP) and other agronomic traits of six maize hybrids was field-evaluated under semi-arid conditions. Two levels of irrigation water deficiency (IWD) (moderate and severe droughts; 6000 and 3000 m3 water ha–1, respectively) were applied versus a control (well-watering; 9000 m3 water ha–1). IWD reduced the relative water content, membrane stability index, photosynthetic efficiency, stomatal conductance, and rates of transpiration and net photosynthesis. Conversely, antioxidant enzyme activities and osmolyte contents were significantly increased as a result of the increased malondialdehyde content and electrolyte leakage compared to the control. These negative influences of IWD led to a reduction in CWP and grain yield-related traits. However, EBR24 detoxified the IWD stress effects and enhanced all the above-mentioned parameters. The evaluated hybrids varied in drought tolerance; Giza-168 was the best under moderate drought, while Fine-276 was the best under severe drought. Under IWD, certain physiological traits exhibited a highly positive association with yield and yield-contributing traits or CWP. Thus, exogenously using EBR24 for these hybrids could be an effective approach to improve plant and water productivity under reduced available water in semi-arid environments.
El-Sayed Desoky; Elsayed Mansour; Mohamed Ali; Mohamed Yasin; Mohamed Abdul-Hamid; Mostafa Rady; Esmat Ali. Exogenously Used 24-Epibrassinolide Promotes Drought Tolerance in Maize Hybrids by Improving Plant and Water Productivity in an Arid Environment. Plants 2021, 10, 354 .
AMA StyleEl-Sayed Desoky, Elsayed Mansour, Mohamed Ali, Mohamed Yasin, Mohamed Abdul-Hamid, Mostafa Rady, Esmat Ali. Exogenously Used 24-Epibrassinolide Promotes Drought Tolerance in Maize Hybrids by Improving Plant and Water Productivity in an Arid Environment. Plants. 2021; 10 (2):354.
Chicago/Turabian StyleEl-Sayed Desoky; Elsayed Mansour; Mohamed Ali; Mohamed Yasin; Mohamed Abdul-Hamid; Mostafa Rady; Esmat Ali. 2021. "Exogenously Used 24-Epibrassinolide Promotes Drought Tolerance in Maize Hybrids by Improving Plant and Water Productivity in an Arid Environment." Plants 10, no. 2: 354.
Salinity in soil or irrigation water requires developing genetically salt-tolerant genotypes, especially in arid regions. Developing salt-tolerant and high-yielding wheat genotypes has become more urgent in particular with continuing global population growth and abrupt climate changes. The current study aimed at investigating the genetic variability of new breeding lines in three advanced generations F6–F8 under salinity stress. The evaluated advanced lines were derived through accurate pedigree selection under actual saline field conditions (7.74 dS/m) and using saline water in irrigation (8.35 dS/m). Ninety-four F6 lines were evaluated in 2017–2018 and reduced by selection to thirty-seven F7 lines in 2018–2019 and afterward to thirty-four F8 lines in 2019–2020 based on grain yield and related traits compared with adopted check cultivars. Significant genetic variability was detected for all evaluated agronomic traits across generations in the salt-stressed field. The elite F8 breeding lines displayed higher performance than the adopted check cultivars. These lines were classified based on yield index into four groups using hierarchical clustering ranging from highly salt-tolerant to slightly salt-tolerant genotypes, which efficiently enhance the narrow genetic pool of salt-tolerance. The detected response to selection and high to intermediate broad-sense heritability for measured traits displayed their potentiality to be utilized through advanced generations under salinity stress for identifying salt-tolerant breeding lines.
Ehab Moustafa; Mohamed Ali; Mohamed Kamara; Mohamed Awad; Abdallah Hassanin; Elsayed Mansour. Field Screening of Wheat Advanced Lines for Salinity Tolerance. Agronomy 2021, 11, 281 .
AMA StyleEhab Moustafa, Mohamed Ali, Mohamed Kamara, Mohamed Awad, Abdallah Hassanin, Elsayed Mansour. Field Screening of Wheat Advanced Lines for Salinity Tolerance. Agronomy. 2021; 11 (2):281.
Chicago/Turabian StyleEhab Moustafa; Mohamed Ali; Mohamed Kamara; Mohamed Awad; Abdallah Hassanin; Elsayed Mansour. 2021. "Field Screening of Wheat Advanced Lines for Salinity Tolerance." Agronomy 11, no. 2: 281.
Faba bean (Vicia faba L.), a major legume crop, helps in maintaining soil health by fixing atmospheric nitrogen (N2) and thus mostly used as a rotational crop. However, faba bean is sensitive to water stress, which limits its yield potential in water-limited environments. The objectives of the present study were to (i) characterize the agro-physiological performance of 14 faba bean genotypes with different genetic backgrounds to various levels of water stress in an arid environment and (ii) identify the most drought-tolerant genotypes that maximize the marginal use of unit water without significant yield loss. Field experiments were conducted for two consecutive growing seasons in an arid Mediterranean climate, and several agronomic and physiological measurements of different faba bean genotypes in response to water stress were recorded. A great variation among the tested genotypes, according to several drought-response indices, was observed as a result of water stress on the basis of which they were classified into five groups (A–E) ranging from drought-tolerant to highly sensitive genotypes. Yield and water productivity results indicated that drought-tolerant genotypes produced more yield with less water compared with drought-sensitive genotypes and thus are highly recommended for faba bean production in water-limited environments. Certain physiological parameters, such as photosynthetic pigment, net photosynthetic rate, transpiration rate, leaf nutrient status (N, P and K content), relative water content and membrane stability index, exhibited highly positive association with seed yield and yield contributing traits. It is valid to use these parameters as rapid indicators of drought tolerance in breeding programs aiming to screen and improve faba bean genotypes for drought tolerance in arid environments.
Elsayed Mansour; El-Sayed M. Desoky; Mohamed M.A. Ali; Mohamed I. Abdul-Hamid; Hayat Ullah; Ahmed Attia; Avishek Datta. Identifying drought-tolerant genotypes of faba bean and their agro-physiological responses to different water regimes in an arid Mediterranean environment. Agricultural Water Management 2021, 247, 106754 .
AMA StyleElsayed Mansour, El-Sayed M. Desoky, Mohamed M.A. Ali, Mohamed I. Abdul-Hamid, Hayat Ullah, Ahmed Attia, Avishek Datta. Identifying drought-tolerant genotypes of faba bean and their agro-physiological responses to different water regimes in an arid Mediterranean environment. Agricultural Water Management. 2021; 247 ():106754.
Chicago/Turabian StyleElsayed Mansour; El-Sayed M. Desoky; Mohamed M.A. Ali; Mohamed I. Abdul-Hamid; Hayat Ullah; Ahmed Attia; Avishek Datta. 2021. "Identifying drought-tolerant genotypes of faba bean and their agro-physiological responses to different water regimes in an arid Mediterranean environment." Agricultural Water Management 247, no. : 106754.
Field-based trials and genotype evaluation until yielding stage are two important steps in improving the salt tolerance of crop genotypes and identifying what parameters can be strong candidates for the better understanding of salt tolerance mechanisms in different genotypes. In this study, the salt tolerance of 18 bread wheat genotypes was evaluated under natural saline field conditions and at three saline irrigation levels (5.25, 8.35, and 11.12 dS m−1) extracted from wells. Multidimensional evaluation for salt tolerance of these genotypes was done using a set of agronomic and physio-biochemical attributes. Based on yield index under three salinity levels, the genotypes were classified into four groups ranging from salt-tolerant to salt-sensitive genotypes. The salt-tolerant genotypes exhibited values of total chlorophyll, gas exchange (net photosynthetic rate, transpiration rate, and stomatal conductance), water relation (relative water content and membrane stability index), nonenzymatic osmolytes (soluble sugar, free proline, and ascorbic acid), antioxidant enzyme activities (superoxide dismutase, catalase, and peroxidase), K+ content, and K+/Na+ ratio that were greater than those of salt-sensitive genotypes. Additionally, the salt-tolerant genotypes consistently exhibited good control of Na+ and Cl− levels and maintained lower contents of malondialdehyde and electrolyte leakage under high salinity level, compared with the salt-sensitive genotypes. Several physio-biochemical parameters showed highly positive associations with grain yield and its components, whereas negative association was observed in other parameters. Accordingly, these physio-biochemical parameters can be used as individual or complementary screening criteria for evaluating salt tolerance and improvement of bread wheat genotypes under natural saline field conditions.
Elsayed Mansour; Ehab Moustafa; El-Sayed Desoky; Mohamed Ali; Mohamed Yasin; Ahmed Attia; Nasser Alsuhaibani; Muhammad Tahir; Salah El-Hendawy. Multidimensional Evaluation for Detecting Salt Tolerance of Bread Wheat Genotypes Under Actual Saline Field Growing Conditions. Plants 2020, 9, 1324 .
AMA StyleElsayed Mansour, Ehab Moustafa, El-Sayed Desoky, Mohamed Ali, Mohamed Yasin, Ahmed Attia, Nasser Alsuhaibani, Muhammad Tahir, Salah El-Hendawy. Multidimensional Evaluation for Detecting Salt Tolerance of Bread Wheat Genotypes Under Actual Saline Field Growing Conditions. Plants. 2020; 9 (10):1324.
Chicago/Turabian StyleElsayed Mansour; Ehab Moustafa; El-Sayed Desoky; Mohamed Ali; Mohamed Yasin; Ahmed Attia; Nasser Alsuhaibani; Muhammad Tahir; Salah El-Hendawy. 2020. "Multidimensional Evaluation for Detecting Salt Tolerance of Bread Wheat Genotypes Under Actual Saline Field Growing Conditions." Plants 9, no. 10: 1324.
Many countries in the MENA region (Middle East and North Africa) are facing water scarcity, which poses a great challenge to agricultural production. Furthermore, water scarcity is projected to increase due to climate change, particularly in arid and semi-arid regions. The integration of solar power and water desalination systems in greenhouses to overcome water shortages is one of the preferred technologies in crop-growing areas. Crop growth control is done through sufficient management of environmental climatic variables as well as the quantity and quality of water and applied fertilisers with irrigation. Numerous crops such as cucumbers, tomatoes, peppers, lettuces, strawberries, flowers, and herbs can be grown under greenhouse conditions using desalinated water. This paper displays the state of the art in (i) solar-driven saltwater desalination to irrigate crops, (ii) the feasibility of water desalination for agriculture in the MENA region, (iii) the economics and environmental impacts of the desalination process, (iv) the quality of desalinated water compared with other non-conventional water resources and (v) recommendations for the future in the MENA region.
Hassan Awaad; Elsayed Mansour; Mohammad Akrami; Hassan Fath; Akbar Javadi; Abdelazim Negm. Availability and Feasibility of Water Desalination as a Non-Conventional Resource for Agricultural Irrigation in the MENA Region: A Review. Sustainability 2020, 12, 7592 .
AMA StyleHassan Awaad, Elsayed Mansour, Mohammad Akrami, Hassan Fath, Akbar Javadi, Abdelazim Negm. Availability and Feasibility of Water Desalination as a Non-Conventional Resource for Agricultural Irrigation in the MENA Region: A Review. Sustainability. 2020; 12 (18):7592.
Chicago/Turabian StyleHassan Awaad; Elsayed Mansour; Mohammad Akrami; Hassan Fath; Akbar Javadi; Abdelazim Negm. 2020. "Availability and Feasibility of Water Desalination as a Non-Conventional Resource for Agricultural Irrigation in the MENA Region: A Review." Sustainability 12, no. 18: 7592.
Wheat landraces are valuable genetic resource for diversity and specific adaptation to local environmental conditions as well as increasing agronomic traits in breeding programs. Admittedly, this type of genotypes has become more crucial to face the challenges of recent climate change. The aim of this study was to investigate the genetic diversity among Egyptian bread wheat landraces and commercial cultivars based on morpho-phenological and agronomic characters. Thirty-two wheat landraces were collected from eleven Egyptian provinces through collecting trips during 1987 to 1999 and, in addition, three commercial cultivars were evaluated all for fifteen qualitative and quantitative characters. Wide genetic diversity was detected based on evaluated morphological characters was observed among the landraces compared to commercial cultivars. Various landraces exhibited strong glaucosity on flag leaf, culm and ear, which is crucial character especially under dry and hot cultivation conditions as Mediterranean region. Furthermore, considerable variation among tested genotypes was demonstrated on the basis of yield-related traits and they were classified into four groups (A–D) from very high-yielding to low-yielding genotypes. Wheat landraces number 3, 8, 14, 27, 29, 33 and 35 exhibited superiority for earliness, grain yield/plant and its components compared to commercial cultivars (number 18, 19 and 20). The association among morpho-phenological and agronomic characters was studied according to principal component analysis. The evaluated characters were divided into four groups. Certain morphological characters (coleoptiles anthocyanin coloration and awns or scurs at tip of ear length) alongside the phenological characters (days to heading and maturity) and certain agronomic characters (plant height and 1000-grain weight) displayed strong association with grain yield/plant. Furthermore, estimated broad sense heritability was high for plant height, number of grains/spike, 1000-grain weight, days to heading, moderate for days to maturity and grain yield/plant presented and low for number of spikes/plant.
M. A. A. H. Gharib; N. Qabil; A. H. Salem; M. M. A. Ali; H. A. Awaad; E. Mansour. Characterization of wheat landraces and commercial cultivars based on morpho-phenological and agronomic traits. Cereal Research Communications 2020, 49, 149 -159.
AMA StyleM. A. A. H. Gharib, N. Qabil, A. H. Salem, M. M. A. Ali, H. A. Awaad, E. Mansour. Characterization of wheat landraces and commercial cultivars based on morpho-phenological and agronomic traits. Cereal Research Communications. 2020; 49 (1):149-159.
Chicago/Turabian StyleM. A. A. H. Gharib; N. Qabil; A. H. Salem; M. M. A. Ali; H. A. Awaad; E. Mansour. 2020. "Characterization of wheat landraces and commercial cultivars based on morpho-phenological and agronomic traits." Cereal Research Communications 49, no. 1: 149-159.
Mohamed A. Oraby; A. A. El-Khawaga; E. Mansour; M. A. Megahed. ASSESSING DROUGHT TOLERANCE OF SIXTEEN BARLEY GENOTYPES UNDER DIFFERENT IRRIGATION TREATMENTS. Zagazig Journal of Agricultural Research 2018, 45, 1193 -1208.
AMA StyleMohamed A. Oraby, A. A. El-Khawaga, E. Mansour, M. A. Megahed. ASSESSING DROUGHT TOLERANCE OF SIXTEEN BARLEY GENOTYPES UNDER DIFFERENT IRRIGATION TREATMENTS. Zagazig Journal of Agricultural Research. 2018; 45 (4):1193-1208.
Chicago/Turabian StyleMohamed A. Oraby; A. A. El-Khawaga; E. Mansour; M. A. Megahed. 2018. "ASSESSING DROUGHT TOLERANCE OF SIXTEEN BARLEY GENOTYPES UNDER DIFFERENT IRRIGATION TREATMENTS." Zagazig Journal of Agricultural Research 45, no. 4: 1193-1208.
Hanan T. Abd-Allah; H. A. Rabie; E. Mansour; A. A. Swelam. GENETIC VARIATION AND INTERRELATIONSHIPS AMONG AGRONOMIC TRAITS IN BREAD WHEAT GENOTYPES UNDER WATER DEFICIT AND NORMAL IRRIGATION CONDITIONS. Zagazig Journal of Agricultural Research 2018, 45, 1209 -1229.
AMA StyleHanan T. Abd-Allah, H. A. Rabie, E. Mansour, A. A. Swelam. GENETIC VARIATION AND INTERRELATIONSHIPS AMONG AGRONOMIC TRAITS IN BREAD WHEAT GENOTYPES UNDER WATER DEFICIT AND NORMAL IRRIGATION CONDITIONS. Zagazig Journal of Agricultural Research. 2018; 45 (4):1209-1229.
Chicago/Turabian StyleHanan T. Abd-Allah; H. A. Rabie; E. Mansour; A. A. Swelam. 2018. "GENETIC VARIATION AND INTERRELATIONSHIPS AMONG AGRONOMIC TRAITS IN BREAD WHEAT GENOTYPES UNDER WATER DEFICIT AND NORMAL IRRIGATION CONDITIONS." Zagazig Journal of Agricultural Research 45, no. 4: 1209-1229.
Climate change poses challenges to agricultural production in general and to plant breeders in particular. Adaptation of cereals to the new conditions and increasingly variable situations arising from this process is essential to reduce risks and limit potential threats associated with climate hazards. This study presents the first attempt to assess the response and resilience of barley genotypes, with different growth habits across Egypt. For this purpose, eight field trials were conducted from 2013 to 2016 at three experimental sites with different winter climate configurations. The trials were sown at the end of November, following recommendations for the region. Fourteen barley genotypes were evaluated, comprising seven commercial Egyptian cultivars and seven European genotypes. The European genotypes were selected from successful cultivars from Spain, encompassing a range of growth types: two spring, three intermediate and two winter types. The cultivars were genotyped for six major adaptation genes, Vrn-H1-2-3, Ppd-H1-2 and HvCEN. One interesting finding is that, while the Egyptian cultivars were assumed to be of spring growth type, our results demonstrate that two cultivars, namely Giza123 and Giza126, are actually intermediate types (needing just a short period of vernalization). They contain the winter allele at Vrn-H2 together with Vrn-H1-4, the same as the European genotypes Cierzo and Orria, they also have an active allele at PpdH2, such as Hispanic. Overall, these four genotypes showed very good performance in all trials with low genotype-by-environment interaction. Moreover, a foreign late spring genotype (Pewter) was highly productive and a winter genotype (Hispanic) flowered as early as some intermediate and spring genotypes with a yield similar to genotypes currently grown in Egypt. A possible explanation for this surprising occurrence, the influence of an active allele at PpdH2 in winter cultivars, is discussed. In relation to low temperature, a high frequency of cold nights during wintertime was observed at all experimental sites, which seemed sufficient to promote timely flowering for intermediate genotypes, although this was inadequate for promoting flowering and achieving good productivity in strictly winter genotypes (e.g. Barberousse). Our findings also highlight the potential of exotic germplasm for breeding better and more resilient cultivars for autumn and for achieving good yield levels in regions with warm winters like Egypt. The results also provide insights into the usefulness of genetic variation in growth habit for breeders seeking adaptation to climate change conditions.
Elsayed Mansour; Ehab S.A. Moustafa; Naglaa Qabil; Asmaa Abdelsalam; Hany A. Wafa; Ahmed El Kenawy; Ana Maria Casas; Ernesto Igartua. Assessing different barley growth habits under Egyptian conditions for enhancing resilience to climate change. Field Crops Research 2018, 224, 67 -75.
AMA StyleElsayed Mansour, Ehab S.A. Moustafa, Naglaa Qabil, Asmaa Abdelsalam, Hany A. Wafa, Ahmed El Kenawy, Ana Maria Casas, Ernesto Igartua. Assessing different barley growth habits under Egyptian conditions for enhancing resilience to climate change. Field Crops Research. 2018; 224 ():67-75.
Chicago/Turabian StyleElsayed Mansour; Ehab S.A. Moustafa; Naglaa Qabil; Asmaa Abdelsalam; Hany A. Wafa; Ahmed El Kenawy; Ana Maria Casas; Ernesto Igartua. 2018. "Assessing different barley growth habits under Egyptian conditions for enhancing resilience to climate change." Field Crops Research 224, no. : 67-75.
Identifying stable, high-yielding genotypes is essential for food security. This is particularly relevant in the current climate change scenario, which results in increasing occurrence of adverse conditions in the Mediterranean region. The objective of this study was to evaluate stability of barley (Hordeum vulgare L.) grain yield, and its relationship to the duration of the growth cycle and its stability under Mediterranean conditions in Egypt. Nineteen genotypes were evaluated during three growing seasons (2013–14 to 2015–16) at two locations (Elkhatara, Ghazala) and two growing seasons (2014–15 and 2015–16) at a third location (Ras-Sudr), i.e. eight environments (location–year combinations) in total. The linear regression explained a significant 48.2% and 22.8% of GEI variation for days to heading and grain yield, respectively, and the genotypic linear slopes were highly related to the first principal component of the AMMI model. Although all genotypes were well adapted to the region, there were different GEI responses, with changes in ranking across locations. Some stable and broadly adapted genotypes were identified, as well as unstable genotypes with specific adaptations. High yields across environments were attained by very stable (G4, G5), intermediate and stable (G1, G9) and highly responsive (G18, G19) genotypes. In general, responsiveness (b values) of yield and days to heading were negatively correlated, and high yielding genotypes showed different patterns of responses of days to heading. Genotypes G1, G4, G5 and G9 seemed best adapted overall, with longer season genotypes (e.g. G18 and G19) offering prospects to explore other formats of varieties in breeding, particularly for situations of climate instability.
Elsayed Mansour; Ehab S. A. Moustafa; Nehal Z. A. El-Naggar; Asmaa Abdelsalam; Ernesto Igartua. Grain yield stability of high-yielding barley genotypes under Egyptian conditions for enhancing resilience to climate change. Crop and Pasture Science 2018, 69, 681 .
AMA StyleElsayed Mansour, Ehab S. A. Moustafa, Nehal Z. A. El-Naggar, Asmaa Abdelsalam, Ernesto Igartua. Grain yield stability of high-yielding barley genotypes under Egyptian conditions for enhancing resilience to climate change. Crop and Pasture Science. 2018; 69 (7):681.
Chicago/Turabian StyleElsayed Mansour; Ehab S. A. Moustafa; Nehal Z. A. El-Naggar; Asmaa Abdelsalam; Ernesto Igartua. 2018. "Grain yield stability of high-yielding barley genotypes under Egyptian conditions for enhancing resilience to climate change." Crop and Pasture Science 69, no. 7: 681.
Elsayed Mansour; Mohamed I Abdul-Hamid; Mohamed T Yasin; Naglaa Qabil; Ahmed Attia. Identifying drought-tolerant genotypes of barley and their responses to various irrigation levels in a Mediterranean environment. Agricultural Water Management 2017, 194, 58 -67.
AMA StyleElsayed Mansour, Mohamed I Abdul-Hamid, Mohamed T Yasin, Naglaa Qabil, Ahmed Attia. Identifying drought-tolerant genotypes of barley and their responses to various irrigation levels in a Mediterranean environment. Agricultural Water Management. 2017; 194 ():58-67.
Chicago/Turabian StyleElsayed Mansour; Mohamed I Abdul-Hamid; Mohamed T Yasin; Naglaa Qabil; Ahmed Attia. 2017. "Identifying drought-tolerant genotypes of barley and their responses to various irrigation levels in a Mediterranean environment." Agricultural Water Management 194, no. : 58-67.