Author: A.E. ISMAIL
Volume: 29 Issue: 1
Under greenhouse conditions, 14 imported oilseed-rape cultivars were screened for their relative susceptibility to Meloidogyne incognita root-knot nematode. The degree of susceptibility was based on number of galls and gall rating per root system of each cultivar. Semu 235/84 , Loras , Sedo and AD 201/GRI were rated as moderately resistant hosts against the nematode infection and seven cultivars viz., Candle , Hanna , PF 2/85 , Semu DNK , Tower , Duplo and Global were categorized as susceptible cultivars. However , the cultivars viz., Golda , Semu 240/84 and Lirasol were ranked as highly susceptible ones against M. incognita infection. It was observed that reproduction of nematode was favored on highly susceptible and susceptible cultivars but inhibited on moderately resistant one.Therefore, all tested cultivars showed great variability in their reaction to the nematode infection according to the host type. Finally, the differences among the tested cultivars should serve as a good resource for plant breeders and cropping systems to limit the loss due to the nematode infection.