This page has only limited features, please log in for full access.

Mr. Felix Frimpong
Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich, Jülich, German

Basic Info


Research Keywords & Expertise

0 Botany
0 Agronomy and Agricultural Research
0 Plant science
0 cropping systems
0 Abiotic Stress Tolerance mechanisms

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

Felix Frimpong is a crop physiologist graduate from the University of Bonn, Germany, and currently affiliated to Forschungszentrum Juelich, Institute of Biogeoscience 2, Plants science, Germany and CSIR-Crops Research Institute, Kumasi, Ghana. He is interested in researching crop resilience to abiotic stress for food security particularly for Africa. He has more than 12 refereed jounal articles with over 60 citations and 4000 reads verifiable from google scholar and researchgate.

Following
Followers
Co Authors
Profile ImageMichael Frei Institute of Crop Science an...
Following: 3 users
View all

Feed

Original research article
Published: 25 February 2021 in Frontiers in Plant Science
Reads 0
Downloads 0

Water stress (WS) during spike development strongly affects final grain yield and grain quality in cereals. Proline, an osmoprotectant amino-acid, may contribute to alleviating the effects of cell and tissue dehydration. We studied five spring barley genotypes contrasting in their drought response, including two introgression lines, S42IL-143 and S42IL-141, harboring a Pyrroline-5-carboxylate synthase1- P5cs1 allele originating from the wild barley accession ISR42-8. We tested the hypothesis that barley genotypes harboring a wild allele at P5cs1 locus are comparatively more drought-tolerant at the reproductive stage by inducing proline accumulation in their immature spikes. At the booting stage, we subjected plants to well-watered and WS treatments until physiological maturity. Several morpho-physiological traits had significant genotype by treatment interaction and reduction under WS. Varying levels of genotypic proline accumulation and differences in WS tolerance were observed. Spike proline accumulation was higher than leaf proline accumulation for all genotypes under WS. Also, introgression lines carrying a wild allele at P5cs1 locus had a markedly higher spike and leaf proline content compared with the other genotypes. These introgression lines showed milder drought symptoms compared with elite genotypes, remained photosynthetically active under WS, and maintained their intrinsic water use efficiency. These combined responses contributed to the achievement of higher final seed productivity. Magnetic resonance imaging (MRI) of whole spikes at the soft dough stage showed an increase in seed abortion among the elite genotypes compared with the introgression lines 15 days after WS treatment. Our results suggest that proline accumulation at the reproductive stage contributes to the maintenance of grain formation under water shortage.

ACS Style

Felix Frimpong; Carel W. Windt; Dagmar van Dusschoten; Ali A. Naz; Michael Frei; Fabio Fiorani. A Wild Allele of Pyrroline-5-Carboxylate Synthase1 Leads to Proline Accumulation in Spikes and Leaves of Barley Contributing to Improved Performance Under Reduced Water Availability. Frontiers in Plant Science 2021, 12, 1 .

AMA Style

Felix Frimpong, Carel W. Windt, Dagmar van Dusschoten, Ali A. Naz, Michael Frei, Fabio Fiorani. A Wild Allele of Pyrroline-5-Carboxylate Synthase1 Leads to Proline Accumulation in Spikes and Leaves of Barley Contributing to Improved Performance Under Reduced Water Availability. Frontiers in Plant Science. 2021; 12 ():1.

Chicago/Turabian Style

Felix Frimpong; Carel W. Windt; Dagmar van Dusschoten; Ali A. Naz; Michael Frei; Fabio Fiorani. 2021. "A Wild Allele of Pyrroline-5-Carboxylate Synthase1 Leads to Proline Accumulation in Spikes and Leaves of Barley Contributing to Improved Performance Under Reduced Water Availability." Frontiers in Plant Science 12, no. : 1.

Journal article
Published: 22 September 2020 in Agriculture
Reads 0
Downloads 0

Modelling and multiple linear regression were used to explore the reason for low maize yield in the Atebubu-Amantin and West Mamprusi Districts of Ghana, West Africa. The study evaluated maize yields on twenty farms against measures of soil fertility, agronomic attributes and soil water availability. Correlations between yield, soil fertility, rain, crop density, and weed biomass, were low, and no single factor could explain the low yields. A 50-year virtual experiment was then set up using the Agricultural Production Systems Simulator (APSIM) to explore the interactions between climate, crop management (sowing date and nitrogen fertilization) and rooting depth on grain yield and nitrate (NO3-N) dynamics. The analysis showed that a lack of optimal sowing dates that synchronize radiation, rainfall events and nitrogen (N) management with critical growth stages explained the low farm yields.

ACS Style

Eric Danquah; Yacob Beletse; Richard Stirzaker; Christopher Smith; Stephen Yeboah; Patricia Oteng-Darko; Felix Frimpong; Stella Ennin. Monitoring and Modelling Analysis of Maize (Zea mays L.) Yield Gap in Smallholder Farming in Ghana. Agriculture 2020, 10, 420 .

AMA Style

Eric Danquah, Yacob Beletse, Richard Stirzaker, Christopher Smith, Stephen Yeboah, Patricia Oteng-Darko, Felix Frimpong, Stella Ennin. Monitoring and Modelling Analysis of Maize (Zea mays L.) Yield Gap in Smallholder Farming in Ghana. Agriculture. 2020; 10 (9):420.

Chicago/Turabian Style

Eric Danquah; Yacob Beletse; Richard Stirzaker; Christopher Smith; Stephen Yeboah; Patricia Oteng-Darko; Felix Frimpong; Stella Ennin. 2020. "Monitoring and Modelling Analysis of Maize (Zea mays L.) Yield Gap in Smallholder Farming in Ghana." Agriculture 10, no. 9: 420.

Journal article
Published: 27 July 2020 in African Crop Science Journal
Reads 0
Downloads 0

Postharvest rot due to injury is a major contributing factor to the declining quality of stored seed yams (Dioscorea spp.). Among the several known injuries, the piercing effect of speargrass rhizomes has become a serious constraint for yam production in Ghana. The objective of this study was to assess injuries on seed yams resulting from piercing of speargrass rhizomes and their effects on postharvest rots in Ghana. Eighty farmer fields from Mem, Watro, Asanteboa and Abour in the Atebubu-Amantin Municipal in the Bono East Region of Ghana were screened for speargrass incidence and injury on harvested tubers, for laboratory analysis of pathogens in 2016 and 2017. The tubers were sorted into four categories of seed yam based on weight. Thirty seed yams each of two selected white yam cultivars (Dente and Kpamyo) with visible speargrass rhizome-pierced-tubers (VSRPT) and non-speargrass rhizome pierced healthy tubers (NSRPHT) were randomly selected and stored in a ban for weekly assessment of rot. The rotten tissues from the localised area of VPSRT were subjected to pathological investigations in the laboratory. The incidence of injury seemingly increased with increasing tuber weight. It was 0% for < 100 g samples and averagely 14% for > 1 kg samples, irrespective of cultivars and locations. Incidence of rot from NSRPHT sample was observed 5 weeks after storage (WAS) for both cultivars; and 2 WAS from the VSRPT sample and 40% higher than NSRPHT at 8 WAS. Eight and six known rot pathogens were isolated from the rotten tissues of VSRPT of Dente and Kpamyo, respectively. Injury from the piercing of speargrass rhizome significantly contributed to hastening of tuber rots; while tuber injury increased with increasing speargrass density. Appropriate management of speargrass is essential for commercial seed yam growers to reduce tuber damage which affects yam quality, storage and marketing. Key words: Dioscorea, postharvest, rot pathogen, speargrass rhizome

ACS Style

A.K. Aidoo; S. Arthur; G. Bolfrey-Arku; K. Osei; J.N.L. Lamptey; M.B. Mochiah; G. Ohene-Mensah; F. Frimpong; Z. Appiah-Kubi; E.O. Danquah; Felix Frimpong. Storage rot of seed yam resulting from speargrass injuries. African Crop Science Journal 2020, 28, 203 -211.

AMA Style

A.K. Aidoo, S. Arthur, G. Bolfrey-Arku, K. Osei, J.N.L. Lamptey, M.B. Mochiah, G. Ohene-Mensah, F. Frimpong, Z. Appiah-Kubi, E.O. Danquah, Felix Frimpong. Storage rot of seed yam resulting from speargrass injuries. African Crop Science Journal. 2020; 28 (2):203-211.

Chicago/Turabian Style

A.K. Aidoo; S. Arthur; G. Bolfrey-Arku; K. Osei; J.N.L. Lamptey; M.B. Mochiah; G. Ohene-Mensah; F. Frimpong; Z. Appiah-Kubi; E.O. Danquah; Felix Frimpong. 2020. "Storage rot of seed yam resulting from speargrass injuries." African Crop Science Journal 28, no. 2: 203-211.

Journal article
Published: 04 June 2019 in The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Reads 0
Downloads 0

Unmanned Aerial Vehicles (UAVs) are increasingly used, and open new opportunities, in agriculture and phenotyping because of the flexible data acquisition. In this study the potential of ultra-high spatially resolved UAV image data was investigated to quantify lodging percentage, lodging development and lodging severity of barley using Structure from Motion techniques. The term lodging is defined as the permanent displacement of a plant from the upright position. Traditionally lodging quantification is based on observations that need, and vary with observers in the field. An objective threshold approach was proposed in this study to improve the accuracy in lodging determination. Across breeding trials, manual reference measurements and UAV based lodging percentage showed a very high correlation (R2 = 0.96). In addition, the multi-temporal lodging percentage development was used to estimate the recovery rate and to determine the influence of different lodging events. Based on the parameter lodging percentage an approach was developed that allowed the assessment of lodging severity, an information that is important to estimate the yield impairment. Lodging severity can be used for insurance applications, precision farming and breeder research. This trait, together with differentiated recovery are novel traits next to lodging severity that will aid the selection for genetic lines.

ACS Style

N. Wilke; B. Siegmann; F. Frimpong; Onno Muller; L. Klingbeil; U. Rascher. QUANTIFYING LODGING PERCENTAGE, LODGING DEVELOPMENT AND LODGING SEVERITY USING A UAV-BASED CANOPY HEIGHT MODEL. The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2019, XLII-2/W13, 649 -655.

AMA Style

N. Wilke, B. Siegmann, F. Frimpong, Onno Muller, L. Klingbeil, U. Rascher. QUANTIFYING LODGING PERCENTAGE, LODGING DEVELOPMENT AND LODGING SEVERITY USING A UAV-BASED CANOPY HEIGHT MODEL. The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. 2019; XLII-2/W13 ():649-655.

Chicago/Turabian Style

N. Wilke; B. Siegmann; F. Frimpong; Onno Muller; L. Klingbeil; U. Rascher. 2019. "QUANTIFYING LODGING PERCENTAGE, LODGING DEVELOPMENT AND LODGING SEVERITY USING A UAV-BASED CANOPY HEIGHT MODEL." The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W13, no. : 649-655.

Preprint
Published: 19 November 2018
Reads 0
Downloads 0

With about 70% of yam tuber been water, yield is critically affected during bulking as a result of onset of temporal drought. As a consequence of climate change, farmers who are into Dioscorea rotundata (white yam) production for local and international market lose their investments mainly due to erratic precipitation, drought spells culminating into low yields of just 12t/ha compared to the potential of about 22-49t/ha depending on the variety. Innovative land uses technologies with higher and sustained productivity for yam production are imperative. This study verifies improved agronomic package for sustainable yam production in yam growing areas in the forest – savannah transition zone of Ghana during the 2015 and 2016 cropping seasons. The improved agronomic package included use of ridging as seedbed, seed treatment before planting, fertilizer application at a rate of 30:30:36 N:P205:K20 kg/ha plus 15 kg/ha Mg and 20 kg/ha S as MgSO4 and the use of minimum stakes (trellis; 30-50% less number of stakes used by farmers staking). This was compared with farmers’ practice which consisted of mounding, no fertilizer application and no seed treatment. The results revealed significant (P ≤ 0.01) yam yields of more than 60% difference between the improved agronomic practice and farmers’ practice from Ejura, Atebubu and Kintampo yam growing communities. Adoption of improved agronomic practices does not only sustain yam production and address deforestation but also provide higher returns on investments promoting climate resilience by small holders.

ACS Style

Felix Frimpong; Danquah E. Owusu; Stella Ama Ennin; Henry Asumadu; Atta Kwasi Aidoo; Norbert Maroya; Eric Owusu Danquah. Sustaining yam yields amidst climate threat in the forest – savannah transition zone of Ghana. 2018, 474247 .

AMA Style

Felix Frimpong, Danquah E. Owusu, Stella Ama Ennin, Henry Asumadu, Atta Kwasi Aidoo, Norbert Maroya, Eric Owusu Danquah. Sustaining yam yields amidst climate threat in the forest – savannah transition zone of Ghana. . 2018; ():474247.

Chicago/Turabian Style

Felix Frimpong; Danquah E. Owusu; Stella Ama Ennin; Henry Asumadu; Atta Kwasi Aidoo; Norbert Maroya; Eric Owusu Danquah. 2018. "Sustaining yam yields amidst climate threat in the forest – savannah transition zone of Ghana." , no. : 474247.