Record Details

Improving association studies and genomic predictions for climbing beans with data from bush bean populations

CGSpace

View Archive Info
 
 
Field Value
 
Title Improving association studies and genomic predictions for climbing beans with data from bush bean populations
 
Creator Keller, Beat
Ariza-Suarez, Daniel
Portilla-Benavides, Ana Elisabeth
Buendia, Hector Fabio
Aparicio, Johan Steven
Amongi, Winnyfred
Mbiu, Julius
Msolla, Susan Nchimbi
Miklas, Phillip
Porch, Timothy G.
Burridge, James D.
Mukankusi, Clare
Studer, Bruno
Raatz, Bodo
 
Subject population structure
marker-assisted selection
plant habit
common beans
bush beans
Phaseolus vulgaris
 
Description Common bean (Phaseolus vulgaris L.) has two major origins of domestication, Andean and Mesoamerican, which contribute to the high diversity of growth type, pod and seed characteristics. The climbing growth habit is associated with increased days to flowering (DF), seed iron concentration (SdFe), nitrogen fixation, and yield. However, breeding efforts in climbing beans have been limited and independent from bush type beans. To advance climbing bean breeding, we carried out genome-wide association studies and genomic predictions using 1,869 common bean lines belonging to five breeding panels representing both gene pools and all growth types. The phenotypic data were collected from 17 field trials and were complemented with 16 previously published trials. Overall, 38 significant marker-trait associations were identified for growth habit, 14 for DF, 13 for 100 seed weight, three for SdFe, and one for yield. Except for DF, the results suggest a common genetic basis for traits across all panels and growth types. Seven QTL associated with growth habits were confirmed from earlier studies and four plausible candidate genes for SdFe and 100 seed weight were newly identified. Furthermore, the genomic prediction accuracy for SdFe and yield in climbing beans improved up to 8.8% when bush-type bean lines were included in the training population. In conclusion, a large population from different gene pools and growth types across multiple breeding panels increased the power of genomic analyses and provides a solid and diverse germplasm base for genetic improvement of common bean.
 
Date 2022-04
2023-01-17T14:17:15Z
2023-01-17T14:17:15Z
 
Type Journal Article
 
Identifier Keller, B.; Ariza-Suarez, D.; Portilla-Benavides, A. E.; Buendia, H.F.; Aparicio, J.S.; Amongi, W.; Mbiu, J.; Msolla, S.N.; Miklas, P.; Porch, T.G.; Burridge, J.; Mukankusi, C.; Studer, B.; Raatz, B. (2022) Improving association studies and genomic predictions for climbing beans with data from bush bean populations. Frontiers in Plant Science 13:830896. ISSN: 1664-462X
1664-462X
https://hdl.handle.net/10568/127296
https://doi.org/10.3389/fpls.2022.830896
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format application/pdf
 
Publisher Frontiers Media
 
Source Frontiers in Plant Science