Whole-Genome Sequencing Identifies a Rice Grain Shape Mutant, gs9-1.

ABSTRACT:

Background

Breeding for genes controlling key agronomic traits is an important goal of rice genetic improvement. To gain insight into genes controlling grain morphology, we screened M₃ plants derived from 1,000 whole-genome sequenced (WGS) M₂ Kitaake mutants to identify lines with altered grain size.

Results

In this study, we isolated a mutant, named fast-neutron (FN) 60-4, which exhibits a significant reduction in grain size. We crossed FN60-4 with the parental line Kitaake and analyzed the resulting backcross population. Segregation analysis of 113 lines from the BC₂F₂ population revealed that the mutant phenotype is controlled by a single semi-dominant locus. Mutant FN60-4 is reduced 20% in plant height and 8.8% in 1000-grain we

SUBMITTER: Jiang L 

PROVIDER: S-EPMC6639446 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature