National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The present investigation was under taken with the objectives to estimate genetic variability, heritability and genetic advance for yield and yield contributing components of cucumber. The experimental materials for this investigation were fourteen genotypes of cucumber consisting of parthenocarpic, gynoecious and monecious germplasms crossed in line × tester mating design produced thirty three hybrids (F1). Thirty three F1 crosses along with their parents were evaluated in two environments viz. Environment 1 (March-June), Environment 2 (August-December) inside polyhouse for evaluation of their quantitative characters. The genotypes exhibited significant differences for all the traits under study in both environments. The genotypic coefficients of variation and phenotypic coefficients of variation were moderate to high for most of the characters. A wide range of variability along with high estimates of PCV and GCV were observed for node number to first male flower, node number to first female flower, sex ratio: (M/F), days to first male flower, fruit yield/ plant (kg), and fruit yield (q/ha) in both the environments.indicating high variability available in the germplasm for these characters for further improvement. High heritability coupled with high genetic advance as percent of mean was observed for fruit length (cm), fruit weight (g), number of fruits/plant, plant height (m), yield per plant (kg), yield per hectare (q/ha), days to first male flower, node to first male flower, node to first female flower and sex ratio (M/F). These characters had additive gene effect and therefore, these are more reliable for effective selection. Yield of parthenocarpic and gynoecious cucumber lines could be improved upon by selecting superior characters for further improvement in cucumber breeding.
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