Authors: E M Wright J D Kelly
Publish Date: 2011/02/05
Volume: 179, Issue: 3, Pages: 471-484
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 119point 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 SY102J115 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 colocalized 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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