Genetic Dissection of Hybrid Performance and Heterosis for Yield-Related Traits in Maize.

ABSTRACT: Heterosis contributes a big proportion to hybrid performance in maize, especially for grain yield. It is attractive to explore the underlying genetic architecture of hybrid performance and heterosis. Considering its complexity, different from former mapping method, we developed a series of linear mixed models incorporating multiple polygenic covariance structures to quantify the contribution of each genetic component (additive, dominance, additive-by-additive, additive-by-dominance, and dominance-by-dominance) to hybrid performance and midparent heterosis variation and to identify significant additive and non-additive (dominance and epistatic) quantitative trait loci (QTL). Here, we developed a North Carolina II population by crossing 339 recombinant inbred lines with two elite lines (Chan

SUBMITTER: Li D 

PROVIDER: S-EPMC8670227 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature