Department of Agricultural Botany, Mahatma Phule Krishi Vidyapeeth, Rahuri-413 722 (M.S.), India.
*Address for correspondence: Oilseeds Research Station, M.RK.V. Jalgaon-425 001 (M.S.).
The effect of biochemical parameters i.e. total chlorophyll content, peroxidase and polyphenol oxidase activity was studied in resistance and susceptible sorghum lines to the sorghum shootfly and their cross combinations. The lower amounts of total chlorophyll content and high enzyme activity were observed in resistant lines and crosses involving resistant x resistant or resistant x susceptible constitution. The higher enzyme activity might be inducing and activating an antibiosis mechanism leading to the reduction in the extent of damage caused by shootfly. The lower amount of chlorophyll content turns the leaves yellowish green and probably make them unattractive for oviposition.
