Development of an agronomically superior blackleg resistant canola cultivar in Brassica napus L. using doubled haploidy

The doubled haploid breeding method and greenhouse screening using cotyledon bio-assay were successfully applied to transfer blackleg resistance from the Australian cultivar Maluka (Brassicas napus), into susceptible advanced B. napus lines from the University of Alberta. This approach for blackleg resistance breeding was effective and efficient as several superior blackleg resistant breeding lines were identified within 4 yr from the initial cross. One of these lines (91-21864NA) was entered in the 1993 trials of the Western Canada Canola/Rapeseed Recommending Committee.