Genetic Analysis of Soybean [Glycine max (L.) Merr.] Seed Quality Traits for Adaptation to Mega-environments of Canada and Ukraine

Hong, Huilin
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University of Guelph

To develop soybean (Glycine max L. Merr.) breeding strategies for the Ukrainian market, it is essential to understand the underlying genetic control and correlations associated with the important seed quality traits between the two mega-environments (MEs). The objectives of this thesis were to: (1) determine the differences in the genetic control of seed quality traits between the Canadian and Ukrainian MEs as revealed by quantitative trait loci (QTL), and (2) determine the correlations between seed quality traits and agronomic traits. A soybean diversity genomic panel of 184 genotypes was used for the analyses. ME specific QTL (QTLSP) were identified for different seed quality traits, but no ME universal QTL (QTLU) were identified across the MEs. Most of the correlations observed between the seed quality traits as well as agronomic traits were consistent across the MEs. The identified genetic factors and phenotypic correlations may facilitate future cultivar development for foreign markets.

QTL, GWAS, Soybean, Canada, Ukraine, Seed quality trait