Response of resistant barley cultivars to the indian populations of Heterodera avenae Complex*

Reported resistant barley cultivars BH 331, BH 338, C 164, Rajkiran, RD 2035, RD 2052 and RD 2508 were tested against three (Jaipur, Udaipur and Sirsa) populations of Heterodera avenae pathotype Ha 21 and a single population (Ambala) of H. filipjevi pathotype Hf31. All these resistant cultivars turned out to be susceptible to H. filipjevi population. BH 331 and BH 338 were susceptible to all the three populations of H. avenae. However varied reactions were obtained for rest of the cultivars against H. avenae populations. RD 2052 was susceptible against Udaipur population but resisted Jaipur and Sirsa populations. Jaipur and Udaipur populations were virulent on RD 2508.