Fixation of hybrid sterility genes and favorable alleles of key yield-related genes with dominance contribute to the high yield of the Yongyou series of intersubspecific hybrid rice.

Abstract excerpt

In rice, the Yongyou series of Xian-Geng intersubspecific hybrids have excellent production performance, as shown by their extremely high yield. However, the mechanisms underlying the success of these rice hybrids are unclear. In this study, three F2 populations are generated from three Yongyou hybrids to determine the genetic basis of the extremely high yield of intersubspecific hybrids. Genome constitution...

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