Identification of Faba bean genetic loci associated with quantitative resistance to the fungus Botrytis fabae, causal agent of chocolate spot.

ABSTRACT:

Introduction

Chocolate spot, caused by the ascomycete fungus Botrytis fabae, is a devastating foliar disease and a major constraint on the quality and yield of faba beans (Vicia faba). The use of fungicides is the primary strategy for controlling the disease. However, high levels of partial genetic resistance have been identified and can be exploited to mitigate the disease.

Methods

The partially resistant V. faba cultivar Maris Bead and susceptible Egyptian accession ig70726 were crossed, and a genetic mapping population of 184 individuals was genotyped in the F₂ generation and screened for resistance to B. fabae infection in the F₃, F₅, and F₆ generations in a series of field experiments. A high-densit

SUBMITTER: Webb A 

PROVIDER: S-EPMC11067873 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature