Introgression of clubroot resistance from B. rapa into B. napus canola and identification of molecular markers for resistance, and pyramiding of this resistance with other resistance genes

Project Summary

Purpose

The study will introgress clubroot resistance (CR) from B. rapa to canola. The B. rapa germplasm used in this research carries resistance to pathotypes 3 and 3A. This resistance is not strongly associated with the two well-known sources, so could be a new source of resistance.

Progress

Introgression of resistance from B. rapa var. rapifera (radish) and B. rapa var. chinensis (Chinese cabbage) into B. napus is completed. A few hundred reconstituted B. napus lines carrying resistance to pathotype 3/3A were tested in a clubroot diseases infested field which carry pathotype 5X. Several lines showed resistance to the pathotypes present in this field.