Vol. 12, Issue 6 (2023)

Author(s):
Elluru Sireesha and Ruchira Tiwari

Abstract:
The evaluation trials were conducted to screen thirty-three promising pigeonpea germplasm lines along with two check entries i.e., PA421 (Check) and MN1 (Susceptible check) for their resistance/ tolerance against Tur Pod bug, Clavigralla gibbosa (Spinosa) during two Kharif crop seasons i.e., 2021-22 and 2022-23 at the NEBCRC, GBPUA&T, Pantnagar. The Cumulative data on the overall mean population of pod bug was ranged from 2.20 bugs/ plant in PA659 to 5.57 bugs/ plant in PA727 as compared to 3.47 bugs/ plant in PA421 (check) and 5.87 bugs/ plant in MN1 (Susceptible check). The minimum mean pod bug population were recorded in the PA718 (2.47 bugs/ plant) after PA659, followed by PA674 (2.57 bugs/ plant) which is at par with genotypes PA733 (2.60 bugs/ plant). The lowest seed damage percent were recorded in the lines PA659 (2.83%), followed by PA718 (3.00%), PA674 (3.50%) which is at par with genotypes PA733 (3.67%) as compared to PA421 (5.17%) and MN1 (13.67%). Considering the minimum pod bug mean population and seed damage percentage, the four germplasm lines i.e., PA659, PA718, PA674 and PA733 were found to be best.