Department of Genetics and Plant Breeding, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar-263 145, Distt. Udham Singh Nagar, Uttrakhand, India.
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Nine F3 progenies of interspecific hybrids devived from crossing between three wild species (Cajanus cajanifolius, Cajanus acutifolius and Cajanus scarabaeoides) and three cultivated varieties of Cajanus cajan (UPAS120, Pant A134 and ICPL 84023) were taken up for identification of spotted pod-borer (Maruca testulalis) resistant lines. in the F3 progenies of ICPL 84023 × Cajanus acutifollus mean per cent incidence of damage by Maruca was found lowest (0.95%) followed by progenies of UPAS120 × Cajanus cajanifolius (1.53%). Among the cultivated parents mean percent incidence of damage by Maruca was ranged from 8.88% to 25.00% whereas among wild parents, it was recorded very low only i.e. upto 1.43%. All interspecific progenies were found resistant for Maruca pest. Similar to three wild species used in present study, progenies of four interspecific hybrids had less than 2% mean incidence of damage whereas highest mean incidence of damage (7.58% to 9.98%) was found among progenies derived from C. scarabaeoides.
Spotted pod-borer, Maruca testulalis, interspecific hybrids, pigeonpea
