Genome-wide association study reveals novel QTLs and candidate genes for panicle number in rice.

ABSTRACT:

Introduction

Panicle number (PN) is one of the three key yield components in rice, maintaining stable tiller and PN is a crucial characteristic of an ideal plant architecture. Understanding the molecular mechanisms underlying PN is essential for breeders aiming to improve rice yield.

Methods

To dissect the genetic architecture of panicle number, a genome-wide association study (GWAS) was conducted in 411 japonica rice varieties. GWAS analysis was carried out with the mixed linear model using 743,678 high-quality SNPs.

Results

Over two experimental years, we detected a total of seven quantitative trait loci (QTLs), located on chromosomes 1, 4, 6, 8, 11, and 12; notably, qPN1.1 and qPN8 were detected consistently in both years. By combining haplotyp

SUBMITTER: Guo J 

PROVIDER: S-EPMC11573766 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature