Phenotyping of Indian and exotic wheat germplasm against spot blotch (Bipolaris sorokiniana).

摘要

Twenty wheat genotypes, obtained from the Directorate of Wheat Research, Karnal (Haryana, India), Division of Genetics and Division of Plant Pathology, Indian Agricultural Research Institute (New Delhi, India), were screened for spot blotch resistance against 3 isolates (BS-25, BS-34 and BS-75) of Bipolaris sorokiniana [Cochliobolus sativus] in a glasshouse. BS-75 showed the maximum virulence with mean percentage disease index (PDI) of 37.1, followed by BS-34 (36.1) and BS 25 (35.1). Among the wheat genotypes, Lok Bharti was found highly susceptible to all 3 isolates, with average PDI of 60.0, which was higher than that of control Agra Local (56.7). Synthetic-23 showed moderately resistance reaction with PDI 0f 15.71 to all tested isolates.