Clubroot, caused by the pathogen Plasmodiophora brassicae (Pb) can be a devastating disease to canola crops. Since 2009, resistant canola cultivars have been available in Canada but all of them are based on a single dominant R gene.
Researchers in Saskatchewan conducted a three-year project to identify virulence genes in the Leptosphaeria maculans genome, the pathogen that causes blackleg in canola.
Developing genetically resistant canola varieties is the best and only effective method for controlling blackleg to date. Researchers at Agriculture and Agri-Food Canada have been able to locate the resistance gene LepR4 and develop DNA based markers in close proximity to this gene.
Sclerotinia stem rot is one of the major diseases affecting canola production. New varieties of Brassica napus canola with improved levels of sclerotinia resistance are required as part of an integrated management strategy.
Although the majority of canola producers currently swath Brassica napus prior to combining, many producers would prefer to have the option to straight combine and therefore avoid the cost and time associated with swathing.
Clubroot is a serious soil-borne disease of canola caused by the pathogen Plasmodiophora brassicae. Multiple genes that can be clearly identified and stacked or rotated are required for long-term effectiveness of clubroot management toward protecting canola yield.
Researchers at the University of Saskatchewan initiated a study in 2000 to develop a non-transgenic, GMS system in canola (Brassica napus) using chemicals to restore fertility.
Sclerotinia stem rot, caused by Sclerotinia sclerotiorum, is a disease problem of canola world wide causing serious yield losses especially under wet weather conditions. Sclerotinia resistance has been a long-time goal of canola breeders and producers.
Sclerotinia stem rot, caused by Sclerotinia sclerotiorum, is a serious disease problem of canola worldwide. The long term objective for researchers at Agriculture and Agri-Food Canada is to provide the canola industry with specific resistance genes and molecular markers as a selection tool used by plant breeders for selection of stem rot resistant canola cultivars.
Researchers are using standard molecular biology protocols to generate a genetic framework map and to try to develop lines that include genetic control of pod shatter.
Fusarium wilt resistance in Brassica napus was found to be conferred by a single dominant gene, the A-genome. This means that B. rapa and B. oleracea may be sources of resistance to fusarium wilt available to B. napus breeders.
The development of early maturing canola is crucial to the northern canola growing areas of western Canada. Although B. rapa has several advantages over B. napus, producers currently have very few cultivars from which to choose, and only one with resistance to blackleg.
