Vol. 12, Issue 4 (2023)

Author(s):
Punam Bagang, Ganesh Mohan Balaga and KM Singh

Abstract:
Rice genotypes indigenous to Manipur were screened for resistance reactions against rice leaf folder at the research field of College of Agriculture, Central Agricultural University, Imphal, Manipur. The experimental design followed was Randomized Bock Design, with three replications and 19 genotypes (treatments). Insect infestation was recorded at 30, 45, 60, 75 and 90 DAT. Considering the average of five observations i.e. at 30, 45, 60, 75 and 90 DAT, the lowest percent leaf infestation was observed in Chak-hao Manam Nungshibi with 3.58 percent. Wairi Chak-hao showed highest percent leaf damage with 5.27 percent. For finding the resistance reactions, biochemical parameters such as total sugars, reducing sugars, total phenols and orthodihydroxy phenol were analysed. The result showed that sugar content and insect infestation were positively co-related and phenol content and insect infestation were negatively co-related.