Genome-wide association study dissects the genetic control of plant height and branch number in response to low-phosphorus stress in Brassica napus.

ABSTRACT:

Background and aims

Oilseed rape (Brassica napus) is one of the most important oil crops worldwide. Phosphorus (P) deficiency severely decreases the plant height and branch number of B. napus. However, the genetic bases controlling plant height and branch number in B. napus under P deficiency remain largely unknown. This study aims to mine candidate genes for plant height and branch number by genome-wide association study (GWAS) and determine low-P-tolerance haplotypes.

Methods

An association panel of B. napus was grown in the field with a low P supply (P, 0 kg ha-1) and a sufficient P supply (P, 40 kg ha-1) across 2 years and plant height and branch number were investigated. More than five million single-nucleotide polymorphisms (SNPs) were used to conduct GWAS of plant hei

SUBMITTER: Liu H 

PROVIDER: S-EPMC8577194 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature