In sorghum, shoot fly resistance is important for grain yield and fodder value. An experiment was conducted to estimate genetic parameters of sorghum for resistance to shoot fly in 50 hybrids, by crossing 5 · 10 genotypes in line · tester manner. Plant height, number of leaves per plant, number of eggs per plant, trichomes on upper and lower surface per unit area of lamina and dead heart per cent were measured on 14 and 21 days after emergence (DAE) and glossiness of leaves was graded on 14 DAE. The correlation between midparent and hybrid performance, GCA : SCA ratio revealed predominance of non-additive gene effects for the traits studied, which could be exploited through hybrid breeding. Of the parents, SPSFPR 94004A and IS 4777 were the best general combiners for shoot fly resistance. Correlation and path analysis revealed the importance of resistance traits and phenol estimation confirms the resistances against shoot fly.

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The black gram genotype VBG 18 is a cross derivative from LBG 402 X LBG 17. It matures in 65-70 days. This culture rcorded high seed yield in station trials, multilocation trials and adaptive research trials. The average seed yield is about 775 and 826 kg/ha respectively in irrigated and rainfed conditions. The highest yield potential is 1800 kg/ha. It showed resistance to yellow mosaic virus disease and moderate resistance to powdery mildew and pod borer damage. Hence, the culture VBG 18 is released as Vamban 3 black gram for commercial cultivation in Tamil Nadu during 2000.