Journal ID : AMA-09-02-2023-12005
[This article belongs to Volume - 54, Issue - 02]
Total View : 391

Title : Estimation of Gene Action, Genetic Heritability, and Heterosis for Quantitative Traits in Melon (Cucumis melo, L.)

Abstract :

Melon is one of the most beloved healthy food crops worldwide that needs to increase its production and quality. This study was designed to estimate heterosis, combining abilities, gene action, and heritability in hybrids of melons to develop their yield and quality. The half-diallel cross method was used to produce six F1 hybrids driven from four inbred lines in a randomized complete block design (RCBD) with three replications. The hybrids and their parents were evaluated at the El-Gemmeiza Agriculture Research Station, Horticulture Research Institute, Agriculture Research Center, Egypt. The results revealed that the majority of the crosses had significant heterosis over the midparents, with better parent and chick hybrids for the majority of the traits. The highest significant heterosis over mid parents was 135:15%. The cross P1 x P3 was recorded for average fruit weight, followed by total yield / plot (108.97%). Analysis for combining ability indicated that GCA and SCA variances were highly significant. The ratios of GCA/SCA for all traits were lower than unity. The results reported that none of the parents showed either the best combiner or the best specific combiner for all traits. The broad-sense heritability magnitudes for number of leaves / plant and plant length traits ranged from 83.06 to 99.96%, while the narrow-sense heritability values ranged from 0.42 to 74.08% for total yield / plot and number of fruits / plot traits. These results indicate that selection may be more effective for improving traits in genotypes in early generations.

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