Wheat Breeding Station, Indian Agricultural Research Institute, Simla-4
Online published on 25 January, 2012.
The field reactions of different isogenic lines in the background of Chancellor, each possessing different Pm gene, and wheat varieties carrying known genes for powdery mildew resistance were recorded at three locations, viz., Simla and Dhaulakuan in Himalayan hills and Wellington in Nilgiri hills. Of all the Pm genes; Pm 2 from Ulka and CI 12632 was found to be resistant at all the locations both in seedling and adult plant tests. Pm 1 and Pm 4 genes were effective against the powdery mildew strains present in Himalayan region. The resistance of Pm 3a and Pm 3c was expressed in adult plant stage. The gene Pm 3b was ineffective in all the growth stages. Certain wheat varieties; HS 1138-6-4, HB 117–107, Timgalin and CPAN 718 appear to be very promising for resistance to powdery mildew. These varieties also possess several desirable features including resistance to rusts.
