Genetics of Soybean Agronomic Traits: II. Interactions between Yield Quantitative Trait Loci in Soybean

• DOI: 10.2135/cropsci1999.3961652x
• Publication Date: 2010-07-29T16:22:33Z
• Authors: J. H. Orf; K. Chase; F. R. Adler; L. M. Mansur; K. G. Lark
• Keywords: Epistasis; Inbred strain; Gene interaction; Trait; Genetic linkage

ABSTRACT In order to breed efficiently, it is necessary identify individual quantitative trait loci (QTLs) as well interactions between these and determine which QTLs produce phenotypes that are environment specific. This can be done by linking molecular markers. The objective of this research was carry out such an analysis for yield, one the most complex agronomic traits. To do this, recombinant inbred lines soybean [ Glycine max (L.) Merrill] were characterized genetic markers analyzed yield in different environments. Interactions identified subdividing segregants into four sub‐populations defined alleles at pairs unlinked loci. Differences mean yields QTLs. Measurements genotyped, populations derived from crosses ‘Minsoy’ with ‘Archer’ ( MA population) ‘Noir 1’ Archer NA have a pair interacting whose effect independent interaction Each example epistasis, involved allele specific two population, Noir 1 interact specify significant increase not These loci, located on linkage groups (LG) U3 U9, affect either height or maturity. all environments, significant. Minsoy yield. However, One (on LG U14) also associated effects height, seed weight, maturity found other but latter appear involve any data population support concept result location‐specific