Association mapping for broomrape resistance in sunflower.

ABSTRACT:

Introduction

Sunflower breeding for resistance to the parasitic plant sunflower broomrape (Orobanche cumana Wallr.) requires the identification of novel resistance genes. In this research, we conducted a genome-wide association study (GWAS) to identify QTLs associated with broomrape resistance.

Methods

The marker-trait associations were examined across a germplasm set composed of 104 sunflower accessions. They were genotyped with a 600k AXIOM® genome-wide array and evaluated for resistance to three populations of the parasite with varying levels of virulence (races EFR, FGV, and GTK) in two environments.

Results and discussion

The analysis of the genetic structure of the germplasm set revealed the presence of two main groups. The application of optimized treatments ba

SUBMITTER: Calderon-Gonzalez A 

PROVIDER: S-EPMC9875907 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature