Evaluation of wheat germplasms against three wheat rust pathogens in vivo
2012
Gurjar, M.S. | Aggarwal, Rashmi | Banerjee, Sagar | Gupta, Sangeeta | Śarmā, Sapanā | Prashar, M.
Twenty five Indian wheat genotypes were evaluated against diverse nine predominant pathotypes of stem (40A, 40-1, & 117-6), leaf (77-5, 77-8, 104-2 & 12-1) and stripe (46S119 & 78S84) rusts to identity disease resistant germplasm. Infection types were recorded according to the standard procedure at seedling stage. The fourteen cultivars viz. HD 2687, HD 2733, HD 2824, HD 2888, VL 804, UP 2425, RAJ 3765, HI 1531, DBW 16, DBW 17, PBW 343, PBW 550, HS 240 and HW 2004 were showed resistant type of reaction (IT ;, 0, 1, 2) against three pathotypes viz. 40A, 40-1 and 117-6 of stem rust. The twelve cultivars HD 2894, HD 2967, HD 2824, HD 2985, HD 2888, HI 1531 DBW 17, PBW 343, PBW 550, HW 2004, MACS 1967 and MACS 6145 produced resistant type reaction (IT ;, 0, 1, 2) against all four pathotypes of leaf rustviz. 77-5, 77-8, 104-2 and 12-1. Cultivars HD 2894, HD 2687, HD 2967, HD 2932, HD 2733, HD 2824, HD 2985, HD 2888, VL 804, UP 2425, HI 1531, DBW 16, DBW 17, PBW 343, PBW 550, HW 2004, MACS 1967, MACS 6145 and WL 711(+Lr57) were found resistant against most virulent pathotype 77-5 of leaf rust. Resistant type reaction were observed in genotypes HD 2894, HD 2967, HD 2888, UP 2425, RAJ 3765, HI 1531, DBW 16, HW 2004 and MACS 6145 against stripe rust pathotypes 46S119 and 78S84. This information on resistance in wheat genotypes/cultivars against specific races will be useful for developing rust resistance genotypes in wheat breeding programmes.
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