Genetic heterosis and inbreding depression analysis of okra (abelmoschus esculenus L.)

Okra is an important vegetable crop in tropical, subtropical and Mediterranean regions of the world. Hundred grams edible portion of okra contains 1.9 g of protein, 0.2 g fat, 6.4 g carbohydrate, 0.7 g minerals and 1.2 g fiber. The material for present investigation comprised 10 genotypes of Okra collected C. S. Azad University of Agriculture and Technology Kalyanpur- Kanpur. These comprised of commercial varieties and indigenous collection from different parts of India grown at research farm of Kisan P. G. College Simbhaoli - Ghaziabad. All the possible F1 crosses excluding reciprocal were made among these 10 parents during the season. All these F1 were selfed for procuring F2 seeds. The high magnitude Heterosis performance was found in cross combination KS-475xKS-418 yield per plant. Inbreeding depression was observed with nine F2 populations maximum 40.0% with cross KS-315xKS-418 found high yield due to Heterosis over economic parent for number fruits per plant, length of fruit and yield per plant. Crosses KS-315xKS-375, BO-2xKS-375, B0-2xKS-410 and Parbhani Kranti x Pusa Sawani showed maximum significant negative inbreeding depression for high yield per plant