Mapping QTL for seed yield and canning quality following processing of black bean (<Emphasis Type="Italic">Phaseolus vulgaris</Emphasis> L.) |
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Authors: | E?M?Wright Email author" target="_blank">J?D?KellyEmail author |
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Institution: | (1) Department of Crop and Soil Sciences, Michigan State University, East Lansing, MI 48824, USA; |
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Abstract: | Quantitative trait loci (QTL) analysis was conducted to identify QTL for seed yield and color retention following processing
of a recombinant inbred line (RIL) black bean population. A population of 96 RILs were derived from the cross of black bean
cultivars ‘Jaguar’ and 115M and evaluated in replicated trials at one location over 4 years (2004–2007) in Michigan. A 119-point
genetic map constructed using simple sequence repeat (SSR), sequence related amplified polymorphism (SRAP), target region
amplified polymorphism (TRAP) and phenotypic markers spanned fifteen linkage groups (LG) or 460 cM of the bean genome. Fourteen
QTL for yield and color retention in four environments were identified by composite interval mapping on six linkage groups.
A major QTL SY10.2J115 for seed yield was identified on LG B10 with additional QTL on B3, B5, and B11. Color retention following processing was
associated with loci on B1, B3, B5, B8, and B11. 115M possessed positive alleles for yield, but negative alleles for color
retention. Some QTL for yield and color retention co-localized with regions identified in previous studies while others, particularly
for color retention, were unique. Additional QTL for agronomic and canning quality traits were detected and individual contributions
to future black bean breeding are discussed. |
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Keywords: | |
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