Resistance to powdery mildew (Blumeria graminis f. sp. tritici E. Marchal.) in bread wheat, durum, dicoccum and triticale genotypes

Daisy Basandrai; Ashwani K. Basandrai; S. K. Rana; B. K. Sharma; Amar Singh; Dhirender Singh; P. D. Tyagi

Daisy Basandrai Rice and Wheat Research Centre, Malan 176 047
Ashwani K. Basandrai Rice and Wheat Research Centre, Malan 176 047
S. K. Rana Department of Plant Pathology, CSKHPAU, Palampur 176 062
B. K. Sharma Research Sub Station, Akrot, Una 177 211,
Amar Singh Department of Plant Pathology, CSKHPAU, Palampur 176 062
Dhirender Singh HAREC, Dhaulakuan, Sirmour 173 031
P. D. Tyagi Department of Plant Pathology, CSKHPAU, Palampur 176 062

Keywords: Blumeria graminis tritici, race specific resistance, Triticum aestivum, T. durum, triticale, T. dicoccum, wheat

Abstract

Powdery mildew resistance genes were postulated in 63 Indian genotypes belonging to Triticum aestivum L., T. durum, T. dicoccum and triticale. Gene Pm3c in combination with some unidentified gene(s) was postulated in genotype, K 9441. Some unknown gene(s) alongwith Pm5 were identified in eight genotypes, while Pm 5+Pm 8 were detected in genotype WH 681. Resistance in 22 genotypes was attributed to gene Pm8 while, 12 genotypes showed additional resistance ascribed to the unknown gene(s). Seven genotypes viz., K 9453, HD 2689, HW 3003, HD 2680, MACS 3011, MACS 3018 and HD 2700 showing differential behavior to the test cultures. However, infection type matching technique, could not attribute resistance in these gnotypes. Triticale genotypes viz., DT 95, DT 46 and DT 91, Triticum dicoccum genotypes namely, DDK 1013, DDK 1014, MACS 2574, MACS 2912, MACS 2919, DDK 1009 and DDK 1015 and T. aestivum genotype UP 2450 were resistant to all the cultures and hence, no resistance gene in these genotypes could be postulated.