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Phenotype based clustering, and diversity of common bean genotypes in seed iron concentration and cooking time

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Title Phenotype based clustering, and diversity of common bean genotypes in seed iron concentration and cooking time
 
Creator Amongi, Winnyfred
Nkalubo, Stanley T.
Ochwo-Ssemakula, Mildred
Badji, Arfang
Onziga Dramadri, Isaac
Lapaka Odongo, Thomas
Nuwamanya, Ephraim
Tukamuhabwe, Phineas
Izquierdo, Paulo
Cichy, Karen Ann
Kelly, James D.
Mukankusi, Clare
 
Subject food crops
legumes
phenotypes
species diversity
cooking quality
nutrition security
genotypes
 
Description Common bean is the world’s most important directly consumed legume food crop that is popular for calories, protein and micronutrients. It is a staple food in sub-Saharan Africa, and a significant source of iron for anemic people. However, several pests, soil and weather challenges still impede its production. Long cooking time, and high phytic acid and polyphenols that influence bioavailable iron also limit the health benefits. To inform population improvement strategies and selection decisions for resilient fast cooking and iron biofortified beans, the study determined diversity and population structure within 427 breeding lines, varieties, or landraces mostly from Alliance Uganda and Columbia. The genotypes were evaluated for days to flowering and physiological maturity, yield, seed iron (FESEED) and zinc (ZNSEED) and cooking time (COOKT). Data for all traits showed significant (P≤0.001) differences among the genotypes. Repeatability was moderate to high for most traits. Performance ranged from 52 to 87 ppm (FESEED), 23–38 ppm (ZNSEED), 36–361 minutes (COOKT), and 397–1299 kg/ha (yield). Minimal differences existed between the gene pools in the mean performance except in yield, where Mesoamerican beans were better by 117 kg/ha. The genotypes exhibited high genetic diversity and thus have a high potential for use in plant breeding. Improvement of FESEED and ZNSEED, COOKT and yield performance within some markets such as red and small white beans is possible. Hybridization across market classes especially for yellow beans is essential but this could be avoided by adding other elite lines to the population. Superior yielding and fast cooking, yellow and large white beans were specifically lacking. Adding Fe dense elite lines to the population is also recommended. The population was clustered into three groups that could be considered for specific breeding targets based on trait correlations.
 
Date 2023-05-11
2023-05-18T13:13:54Z
2023-05-18T13:13:54Z
 
Type Journal Article
 
Identifier Amongi; W.; Nkalubo, S.T.; Ochwo Ssemakula, M.; Badji, A.; Dramadri, I.O.; Odongo, T.L.; Nuwamanya, E.; Tukamuhabwe, P.; Izquierdo, Paulo.; Cichy, K.; Kelly, J.; Mukankusi, C. (2023) Phenotype based clustering, and diversity of common bean genotypes in seed iron concentration and cooking time. PLoS ONE 18(5): e0284976. ISSN: 1932-6203
1932-6203
https://hdl.handle.net/10568/130443
https://doi.org/10.1371/journal.pone.0284976
 
Language en
 
Rights CC0-1.0
Open Access
 
Format 25 p.
application/pdf
 
Publisher Public Library of Science (PLoS)
 
Source PLoS ONE