Genetic and physical mapping of loci for resistance to blackleg disease in canola (Brassica napus L.).

Sustainable canola production is essential to meet growing human demands for vegetable oil, biodiesel, and meal for stock feed markets. Blackleg, caused by the fungal pathogen, Leptosphaeria maculans is a devastating disease that can lead to significant yield loss in many canola production regions worldwide. Breakdown of race-specific resistance to L.

Stable Quantitative Resistance Loci to Blackleg Disease in Canola ( L.) Over Continents.

The hemibiotrophic fungus, is the most devastating pathogen, causing blackleg disease in canola ( L). To study the genomic regions involved in quantitative resistance (QR), 259-276 DH lines from Darmor-/Yudal (DYDH) population were assessed for resistance to blackleg under shade house and field conditions across 3 years. In different experiments, the broad sense heritability varied from 43 to 95%.

A multiplex PCR for rapid identification of species in the triangle of U.

Background: Within the Brassicaceae, six species from the genus are widely cultivated throughout the world as oilseed, condiment, fodder or vegetable crops. The genetic relationships among the six species are described by U's triangle model. Extensive shared traits and diverse morphotypes among species make identification and classification based on phenotypic data alone challenging and unreliable, especially when dealing with large germplasm collections.

Genome-wide Association Study Identifies New Loci for Resistance to in Canola.

Key message "We identified both quantitative and quantitative resistance loci to , a fungal pathogen, causing blackleg disease in canola. Several genome-wide significant associations were detected at known and new loci for blackleg resistance. We further validated statistically significant associations in four genetic mapping populations, demonstrating that GWAS marker loci are indeed associated with resistance to One of the novel loci identified for the first time, , conveys adult plant resistance in canola.

Pterostilbene Is a Potential Candidate for Control of Blackleg in Canola.

Two stilbenes, resveratrol and pterostilbene, exhibit antifungal activity against Leptosphaeria maculans, the fungal pathogen responsible for blackleg (stem canker) in canola (Brassica napus). In vitro studies on the effect of these stilbenes on L. maculans mycelial growth and conidia germination showed that pterostilbene is a potent fungicide and sporicide, but resveratrol only exerted minor inhibition on L.