Understanding the Nature of Hybrid Sterility and Divergence of Asian Cultivated Rice.

ABSTRACT: Intraspecific hybrid sterility is a common form of postzygotic reproductive isolation in Asian cultivated rice, which is also the major obstacle to utilize the strong heterosis in the rice breeding program. Here, we review recent progress in classification and hybrid sterility in Asian cultivated rice. A genome-wide analysis of numerous wild relatives of rice and Asian cultivated rice has provided insights into the origin and differentiation of Asian cultivated rice, and divided Asian cultivated rice into five subgroups. More than 40 conserved and specific loci were identified to be responsible for the hybrid sterility between subgroup crosses by genetic mapping, which also contributed to the divergence of Asian cultivated rice. Most of the studies are focused on the sterile barriers betwe

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC9272003 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature