Biochemical basis of resistance to stored grain pest (Callosobruchus chinensis) in different Vigna species.

摘要

Mung bean, urd bean [V. mungo] and ricebean [V. umbellata] seeds were evaluated for resistance to C. chinensis. alpha -Amylase inhibitor, trypsin inhibitor, total phenols and tannic acid showed a positive correlation with resistance to C. chinensis. No seed damage, adult emergence, loss in seed weight, and high seed hardness were observed in ricebean. However, mung bean was found to be most preferred host for oviposition, followed by urdbean. Mung bean (TARM 18) and urdbean (PU 9205-11-3) genotypes recorded the lowest number of damaged seeds and loss in seed weight. The greatest reduction in germination was observed in mung bean and urdbean; the reduction in germination was negligible in ricebean.