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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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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

Int.J.Curr.Microbiol.App.Sci.2018.7(3): 3033-3039
DOI: https://doi.org/10.20546/ijcmas.2018.703.352


Combining Ability Studies in Pumpkin (Cucurbita moschata Duch ex Poir)
P. Marxmathi1, V. Krishnamoorthy1 and P. Thankaraj2
1Department of Horticulture
2Department of Plant Breeding and Genetics, Agriculture College and Research institute, Tamil Nadu Agricultural University, Madurai- 625 104, Tamil Nadu, India
*Corresponding author
Abstract:

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).


Keywords: Pumpkin, Cucurbita moschata, Sex ratio, Carotene, Yield
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How to cite this article:

Marxmathi, P., V. Krishnamoorthy and Thankaraj, P. 2018. Combining Ability Studies in Pumpkin (Cucurbita moschata Duch ex Poir).Int.J.Curr.Microbiol.App.Sci. 7(3): 3033-3039. doi: https://doi.org/10.20546/ijcmas.2018.703.352