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 |
An experiment was conducted to study the combining ability analysis using six parental genotypes and thirty hybrids of pumpkin obtained through full diallel analysis for yield and its attributing traits. The mean sum of square due to general combining ability (gca) and specific combining ability (sca) were significant for nodes to first female flower, days to harvest, fruit weight, fruit length, fruit diameter and number of seeds per fruit. The ratio of gca/sca was less than one for the character nodes to first female flower indicated the preponderance of dominance expression. The P1 is best combiner for days to first female flower (1.11) fruit weight (2.40) fruit length, fruit diameter and yield per plant. The P3 for more number fruits per plant (0.16), P4 for narrow sex ratio (2.06). P2 is best combiner for small sized fruits (0.21) which exhibited negative gca effects. The hybrids P1 x P2 (2.92), P1 x P2 (-0.44) and P4 x P1 (1.55) exhibited higher sca effect for yield and yield attributing traits. The highest sca effects were observed in P1 x P6 for node to first female flower (-2.02), small fruit (-1.39), fruit diameter (1.86), in P2 x P1 for days to first female flower (-2.94), bigger fruit weight (3.93), flesh thickness (0.24) and yield per plant (3.05), P4 x P1 for narrow sex ratio (-3.14) and carotene content in P5 x P4 for days to first female flower (-1.63), flesh thickness (0.28), yield per plant (2.92) and beta carotene (0.07).
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