Identification and allele mining of new candidate genes underlying rice grain weight and grain shape by genome-wide association study.

ABSTRACT:

Background

Grain weight and grain shape are important agronomic traits that affect the grain yield potential and grain quality of rice. Both grain weight and grain shape are controlled by multiple genes. The 3,000 Rice Genomes Project (3 K RGP) greatly facilitates the discovery of agriculturally important genetic variants and germplasm resources for grain weight and grain shape.

Results

Abundant natural variations and distinct phenotic differentiation among the subgroups in grain weight and grain shape were observed in a large population of 2,453 accessions from the 3 K RGP. A total of 21 stable quantitative trait nucleotides (QTNs) for the four traits were consistently identified in at least two of 3-year trials by genome-wide association study (GWAS), including six new QTN

SUBMITTER: Niu Y 

PROVIDER: S-EPMC8349016 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature