Regional variation in Brassica nigra and other weedy crucifers for disease reaction to Alternaria brassicicola and Xanthomonas campestris pv. campestris

摘要: For Brassica crop breeders, weedy crucifers are potential sources of disease resistance and other useful traits. However, few species have been evaluated or well represented in germplasm collections. In this study, we 24 Eurasian crucifer for reaction to North American isolates the pathogens A. brassicicola X. campestris pv. campestris. The test array comprised 190 entries (genebank accessions weed populations), including 108 B. nigra from four geographic regions 34 Camelina sativa. Disease was highly variable between within some species. Reaction C. sativa, a reported as resistant Alternaria pathogens. nigra, regions. Most rated were populations America, but not related distance these populations. summary, two taxa, considered contain little genetic variation. We identified with promising levels highlighted value resources.