Differential reaction of pigeonpea genotypes against isolates of Phytophthora drechsleri f.sp. cajani causing blight of pigeonpea.

摘要

An experiment was conducted to assess the differential reaction of six genotypes of pigeonpea against 12 isolates of Phytophthora drechsleri f. sp. cajani collected from 12 locations from different districts of eastern Uttat Pradesh. On the basis of plant incidence and disease reaction genotypes, Bahar and ICP 7119 categorized as moderately susceptible to susceptible against most of the isolates. However, rest of the genotypes KPBR 80-2-1, KPL-30, MAL-10, and MAL-13 showed different types of disease reaction i.e. resistance, moderately resistance, moderately susceptible to susceptible to susceptible. It was also observed that isolate NAg₁ was more virulent than other isolates i.e. SD₁, K₁, T₂, DP₁, NS₁, BG₁ Daphi₁, UM₁ D₁, KB₁ and CA₁.