Host Plant Resistance for Bruchids in Pre-breeding Lines of Greengram [Vigna radiata (L.) Wilczek]

Background: Bruchid beetle (Callosobruchus chinensis) is one of the devastating field carry over storage pest causing a huge crop loss, especially in greengram. The pre-breeding lines were developed by crossing between cultivated variety, VBN (Gg) 2 and Vigna radiata var. sublobata, progenitor species greengram used as resistant parent against bruchid. Methods: A total 53 stabilized inter sub-specific along with parents screened for bruchid resistance ‘no choice’ method two replications. Screening parameters recorded all statistically analysed. Damage assessment was carried out three obtained during initial screening further confirmed. Result: low seed damage per cent observed viz., GGISC-2 (18.00), GGISC-21 (20.00) GGISC-49 (14.00). susceptibility index 0.048, 0.049 0.048 GGISC-2, GGISC-49, respectively hence, classified resistant. Delayed adult emergence, uneven prolonged developmental period, small malformed adults other lines. identified could be utilized breeding programmes development varieties