Vol. 12, Issue 11 (2023)

Author(s):
Ajay Singh Sindhu and RS Kanwar

Abstract:
The present study aimed to examine how different levels of H. avenae inoculation affect the physiology of wheat. The experiments were carried out in the screen house at the Department of Nematology, CCSHAU, Hisar. We investigated the impact of varying inoculum levels, specifically 5, 10, and 15 eggs and juveniles per gram of soil of H. avenae, on the physiological characteristics of wheat by making observations 30 days after sowing. As the inoculum level of H. avenae increased, there was a significant reduction in several key parameters, including total chlorophyll, carotenoid content, chlorophyll fluorescence, photosynthetic rate, transpiration rate, and stomatal conductance, at each inoculum level. The most substantial decreases in these parameters were observed at the highest inoculum level, which included reductions of 39.71%, 30.55%, 7.90%, 39.75%, 51.58%, and 64.86%, respectively. Furthermore, at the highest inoculum level, we observed the highest nematode population density and the lowest wheat biomass.