Inheritance of plant height, leaf lobing index, internode length, and number of fruits per plant was studied. Four crosses (Pusa Swani × White Velvet and its reciprocal; Pusa Swani × Emerald: White Velvet × Emerald) were used in this investigation. The parents, F1. F2. and the first backcrosses populations were grown. The inheritance of all the studied characters was found to be quantitative. The proper statistical methods were followed for the analysis of all recorded data. It could be generally concludes that the narrow sense heritability in plant height ranged from 37.18 to 59.13%. leaf lobing index ranged from 26.35 to 77.73%: internode length ranged from 50.06 to 56.52%. and number of fruits per plant varied from 23.22 to 44.26%.
Five lines of cucumber and their 10 F1 diallel crosses were statistically and graphically analyzed to evaluate their performance for eight quantitative traits. Additive and non-additive gene effects were involved in the inheritance of all traits. The variances due ro GCA and SCA effects were highly significant for all traits, but the GCA effect was much greater than SCA except In the case of plant height. The cucumber “TMG-1” and “Yomaki” genotypes were superior for GCA as well as SCA for early and total yields per plant, respectively. Therefore, they can be involved in hybrid programs improvement for cucumber yield under similar conditions.
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