Antibiotic Effect of Pigeonpea Wild Relatives on Helicoverpa armigera

摘要

Antibiosis, one of three types of resistance mechanisms proposed by Painter (1951), is described as those adverse effects on the insect life history when a resistant host-plant variety is used as food. The adverse effect on the insect can be in the form of reduced fecundity, decreased size, abnormal length of life and/or increased mortality (Owens 1975). We investigated the antibiotic effects of flowers of some wild relatives of pigeonpea Cajanus scarabaeoides, C. cajanifolius, C. reticulatus, C. sericus, F_1 (C. scarabaeoides x C. cajan), and cultivated pigeonpea (T 15-15) on the biology of the pod borer, Helicoverpa armigera. The experiment was conducted during Dec 1993-Feb 1994 at Entomology Research Laboratory, Pulses Research Station, Gujarat Agricultural University, Sardar Krushinagar, India.