Genetic relationships and identification of core germplasm among rice photoperiod- and thermo-sensitive genic male sterile lines.

ABSTRACT:

Background

Harnessing heterosis is one of the major approaches to increase rice yield and has made a great contribution to food security. The identification and selection of outstanding parental genotypes especially among male sterile lines is a key step for exploiting heterosis. Two-line hybrid system is based on the discovery and application of photoperiod- and thermo-sensitive genic sensitive male sterile (PTGMS) materials. The development of wide-range of male sterile lines from a common gene pool leads to a narrower genetic diversity, which is vulnerable to biotic and abiotic stress. Hence, it is valuable to ascertain the genetic background of PTGMS lines and to understand their relationships in order to select and design a future breeding strategy.

Results

A collection

SUBMITTER: Zhang X 

PROVIDER: S-EPMC8252326 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature