The ideal glucosinolate profile for pest resistance in oilseed rape | [Le profil idéal en glucosinolates pour la résistance aux ravageurs chez le colza]
1999
Bartlet, E. ((Institute of Arable Crop Research, Harpenden (Royaume Uni))) | Williams, I.H. | Pickett, J.A.
The results of research into the responses of oilseed rape pests (i.e. seed weevil, Ceutorhynchus assimilis, cabbage stem flea beetle, Psylliodes chrysocephala, pollen beetle, Meligethes aeneus, and brassica pod midge, Dasineura brassica) to glucosinolates in rape are summarised. Volatile glucosinolate catabolites, such as isothiocyanates, are important cues to the orientation of these insects. Glucosinolates stimulate biting by cabbage stem flea beetle, but their presence is not a prerequisite to feeding. Two strategies are suggested for improving the glucosinolate content of oilseed rape for pest resistance. The first involves rape lines with low constitutive but high induced glucosinolate levels. The second involves rape lines with a high proportion of glucosinolate types that do not catabolise to isothiocyanate, particularly the higher alkenyl isothiocyanates
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