Mapping an avirulence gene in the sunflower parasitic weed Orobanche cumana and characterization of host selection based on virulence alleles.

ABSTRACT:

Background

Sunflower broomrape (Orobanche cumana Wallr.) is a holoparasitic plant that jeopardizes sunflower production in most areas of Europe and Asia. Recently, populations with increased virulence, classified as race G_GV, have been identified in Southern Spain's Guadalquivir Valley gene pool. These populations overcome resistance genes in hybrids resistant to the predominant race F_GV. This study aimed to (i) determine the inheritance and map the avirulence trait segregating in a cross between O. cumana individuals from populations EK23 (F_GV) and IN201 (G_GV), and (ii) characterize the host effect on the IN201 parental population allelic diversity.

Results

A segregating population consisting of 144 F_2:3 families was ev

SUBMITTER: Calderon-Gonzalez A 

PROVIDER: S-EPMC11606015 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature