Blackleg disease, caused by the fungal pathogen Leptosphaeria maculans, is most devastating disease of canola (Brassica napus, oilseed rape) worldwide. Breeding for genetic resistance widely used tool controlling this and minimizing impact on yield. To date, five genes (Rlm2, LepR3, Rlm4, Rlm7, Rlm9) have been cloned from B. representing alleles two different gene loci, Rlm2-LepR3 Rlm4-7-9. We ...

Abstract The article presents the research data on effect of Fusarium blight, Phoma rot, and Sclerotinia blight plant productivity winter spring rapeseed, brown mustard, white mustard. As a result studies, we found that (the pathogens are fungi genus Link) was most harmful for mustard – affection by it significantly decreased productivity. At 4 points degree plants, harmfulness disease reached ...

Seven blackleg resistance (R) genes (Rlm1, Rlm2, Rlm3, Rlm4, LepR1, LepR2 & LepR3) were each introgressed into a common susceptible B. napus doubled-haploid (DH) line through reciprocal back-crossing, producing single-R gene introgression lines (ILs) for use in the pathological and molecular study of Brassica-Leptosphaeria interactions. The genomic positions of the R genes were defined through ...

White leaf spot (Neopseudocercosporella capsellae), Alternaria (Alternaria brassicae), blackleg (Leptosphaeria maculans), and downy mildew (Hyaloperonospora brassicae) commonly co-occur on rapeseed (Brassica napus). In controlled environment studies, the synergistic/antagonistic interactions between these four pathogens were determined using two cultivars (Surpass 400, Thunder TT) with contrast...

Canola (Brassica napus L. and B. rapa L.), is one of the major oilseed crops grown worldwide. With significant expansion of acreage sown to canola during the past two decades, concern about blackleg, the most serious disease of canola, has increased (3,4). Blackleg disease is caused by Leptosphaeria maculans (Desmaz.) Ces. & De Not. (anamorph: Phoma lingam (Tode:Fr.) Desmaz.). The pathogen can ...