A systematic dissection in oilseed rape provides insights into the genetic architecture and molecular mechanism of yield heterosis.

ABSTRACT: Heterosis refers to the better performance of cross progeny compared with inbred parents, and its utilization contributes greatly to agricultural production. Several hypotheses have been proposed to explain heterosis mainly including dominance, over-dominance (or pseudo-overdominance) and epistasis. However, systematic dissection and verification of these hypotheses are rarely documented. Here, comparison of heterosis level across different traits showed that the strong heterosis of composite traits (such as yield) could be attributed to the multiplicative effects of moderate heterosis of component traits, whether at the genome or locus level. Yield heterosis was regulated by a complex trait-QTL network that was characterized by obvious centre-periphery structure, hub QTL, complex up/downs

SUBMITTER: Ye J 

PROVIDER: S-EPMC10281607 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature