REPRODUCTION OF PLANT-PARASITIC NEMATODES ON WINTER RAPESEED (BRASSICA-NAPUS SSP OLEIFERA)

The reproduction of isolates of five plant-parasitic nematode species on the winter rapeseed cultivars Bridger, Gorzanski, H-47, Lindora, an d Viking was evaluated. Each cultivar was a good host for Helicotylenc hus pseudorobustus, Meloidogyne hapla, and M. incognita. All rapeseed cultivars were poor hosts far Pratylenchus scribneri, in comparison wi th a susceptible reference host. Heterodera glycines females rarely de veloped on any cultivar, but low numbers of juveniles invaded roots an d males occasionally reached maturity.