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Projects & Results

Identification and mapping of clubroot resistance genes in Brassica and development of SNP markers tightly linked to resistance genes

Project Details

Lead Researcher(s)

Fengqun Yu

Co-Researcher(s)

Gary Peng, Kevin Falk

Funding Partners

WGRF

April 2013 - March 2016

Complete

The Challenge

The soil borne disease Plasmodiophora brassicae continues to spread across the prairies with very limited sources of resistance in Brassica napus.

The Project

Analyze and map a variety of novel additional resistance genes highly resistant to all Canadian pathotypes of P.brassicae. Identify robust and low-cost molecular markers tightly associated with genes for marker assisted selection in canola breeding.

The Results

Five resistance genes/alleles were fine mapped in Brassica rapa, and one in Brassica oleracea. Hundreds of SNPs in the target region of each resistance gene were identified. No resistant sources were found in Brassica juncea or Brassica carinata.

Grower Benefits

Canola varieties available commercially will have a more robust resistance package to clubroot, minimizing risk of pathotype shift.

Keywords:

Clubroot, SNP markers, Clubroot resistance, Clubroot genetics, Plasmodiphora brassicae, P. brassicae