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Título

Mapping of single-locus and epistatic QTLs for seed morpho-agronomic traits from an adapted x exotic nuña bean population

AutorYuste-Lisbona, Fernando J.; Capel Salinas, Carmen; González Fernández, Ana María CSIC ORCID; García-Alcázar, Manuel; Capel, Juan; Ron Pedreira, Antonio Miguel de; Lozano, Rafael; Santalla Ferradás, Marta CSIC ORCID
Fecha de publicaciónmay-2013
EditorInternational Legume Society
CitaciónFirst Legume Society Conference (2013)
ResumenCommon bean (Phaseolus vulgaris L.) is a widely grown and important economic grain legume. Seed quality is a critical attribute in determining commercial acceptability of common bean. Thereby, to obtain insights into the genetics of seed quality, a population of 185 recombinant inbred lines (RILs) derived from an Andean intra-gene pool cross, involving PMB0225 (dry bean) and PHA1037 (nuña bean) parents, was evaluated for seven seed traits under six different environments (long-day and short-day natural photoperiod conditions). Multi-environment QTL analyses performed detected a total of 46 QTLs, which were mapped throughout all linkage groups: 21 had only additive effects, 17 had only epistatic effects and eight had both additive and epistatic effects. For seed dimension and weight traits, 19 single-locus QTLs and 13 epistatic QTLs involved in eight epistatic interactions were detected; while for seed color and brightness, 10 single-locus QTLs and 12 epistatic QTLs involved in seven epistatic interactions were identified. Interactions between QTLs and environment were also detected, but despite this fact, QTLs with differential effect on long-day and short-day environments were not found. It may be concluded that i) the genetics of seed quality is complex in nature, where not only additive effects but also epistasis are important components of the genetic variance in the Andean common bean background, and ii) the QTLs here reported will play a significant role in enhancing marker assisted selection efficiency for breeding nuña beans. The work was supported by the PET2008-0167 and AGL2011-25562 projects of the Ministerio de Economía y Competitividad from Spain.
DescripciónComunicación presentada en la First Legume Society Conference, celebrada en Novi Sad (Serbia) del 9 al 11 de mayo de 2013.
URIhttp://hdl.handle.net/10261/99117
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