ABSTRACT

Rapeseed–mustard is an important group of edible oilseed crops constituting oilseed Brassicas and crucifers, namely, Brassica juncea, Brassica rapa subsp. trilocularis, Brassica rapa subsp. dichotoma, Brassica napu, Brassica carinata, Brassica nigra, and Eruca vesicaria subsp. sativa Miller. These cultivated Brassica has two types of genomes, that is, the diploid and amphidiploid genomes. Diseases are major hurdles toward achieving higher production in rapeseed–mustard. The intensive cultivation of the crop with more inputs has further compounded the problem, and now the incidence of diseases and insect pests have become more frequent and widespread. Severe outbreak of diseases deteriorates the quantity and quality of seed and oil content drastically in different oilseed Brassica crops. The expression of full inherent genetic potential of a genotype is governed by inputs that go into the production system. This can be very well illustrated with examples that involve disease management of rapeseed–mustard.