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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): 3025-3032
DOI: https://doi.org/10.20546/ijcmas.2018.703.351


Studies on Heterosis 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 & Research institute, Tamil Nadu Agricultural University, Madurai- 625 104, Tamil Nadu, India
*Corresponding author
Abstract:

The present study was carried out at Department of Horticulture, Agricultural College and Research Institute, Madurai during 2016-2017. Thirty pumpkin hybrids evolved by crossing six genotypes in diallel mating design were evaluated to study heterosis for quantitative and qualitative traits. The higher significantly negative standard heterosis for days to firsts female flowering was recorded in P1 x P2 (-9.03%) and it was positive in P2 X P1 (2.24%), P2 X P5 (5.73%), P5XP2 (1.69), P5XP6 (5.10), P6 X P5 (5.30). The node to first female flower was significantly positive heterosis was observed in P2 XP6 (44.71%), P3XP6 (21.09%), P5XP6 (21.09%), P6XP3 (36.89). The significantly positive heterosis was high in P4XP1 (36.24%), P5XP1 (34.31%), P4XP6 (33.49%), P4XP2 (33.01%), and negative in P6XP4 (-4.70%). The high heterosis for days to first harvest observed in P5XP1 (6.46%) and P6XP4 (6.28%). The high positive significant heterosis observed in P5XP1 (32.91%), for fruit length and negatively in P3XP5 (-37.02%). The fruit diameter heterosis was positively high in P5XP2 (5.09%), negatively in P3XP2 (-31.75%). The number of seeds per fruit significantly positive heterosis in P5XP1 (17.80%), and negative heterosis in P2XP6 (-22.15%). The standard heterosis for fruit weight in P5XP1 was maximum (117.44%) and number of fruits per vine negatively significant in P5 X P3 (-13.36%). The heterosis for fruit yield per vine was high in P1XP5 (206.79%) and P4XP2 (182.95%). The high heterosis for total soluble solids, beta carotene content and dry matter content was found in P5XP6 (8.46%), P3XP2, P2XP3 (29.17%) and P2XP1 (33.77% respectively).


Keywords: Pumpkin, Cucurbita moschata, Fruit yield, Heterosis, Carotene
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How to cite this article:

Marxmathi, P., V. Krishnamoorthy and Thankaraj, P. 2018. Studies on Heterosis in Pumpkin (Cucurbita moschata Duch. ex. Poir).Int.J.Curr.Microbiol.App.Sci. 7(3): 3025-3032. doi: https://doi.org/10.20546/ijcmas.2018.703.351