Vol. 10, Issue 11 (2021)

Author(s):
SB Rajashree, GB Kabre, SR More, ST Aghav and RS Thakare

Abstract:
A field experiment was screened at AICRP on Summer Groundnut, Cotton Improvement Project, MPKV, Rahuri in randomised block design (RBD) under summer condition. The thrips incidence was found to be active throughout the cropping season. These genotypes were further tested for their biochemical traits for their resistance against thrips Based on the per cent leaf damage score by thrips four genotypes viz., Phule Unnati, JL-1224, KDG-160 and KDG-221 were found resistant, whereas, nine genotypes viz., KDG-243, RHRG- 1192, RHRG-16017, RHRG-1189, JL-1240, RHRG-1308, TPG-41, JL-1067 and KDG-244 were recognized as moderately resistant. The genotypes KDG-266 and JL-1229 were found to be moderately susceptible. The pod yield recorded showed non-significant correlation with per cent leaf damage. The biochemical traits of plant such as total phenols (r ⹀ -0.919 and -0.937) and total tannin (r ⹀ - 0.779, -0.810) showed highly significant negative correlation with thrips population and per cent leaf damage. Whereas, total amino acids showed highly significant positive correlation with thrips population and per cent leaf damage (r ⹀ 0.675 and 0.792) and total sugars which showed highly significant and positive correlation with thrips population and per cent leaf damage (r ⹀ 0.908 and 0.890). Leaf water content showed highly significant negative correlation with thrips population and per cent leaf damage (r ⹀ -0.915 and -0.871).