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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39 For more details click here
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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 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

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Original Research Articles

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.2020.9(10): 2838-2850
DOI: https://doi.org/10.20546/ijcmas.2020.910.342


Combining Ability, Gene Action and Heterotic Expression Studies for Yield Contributing Traits in Tomato
K.V. Manjunath* and Subhamoy Sikder
Department of Vegetable and Spice Crops, Uttar Banga Krishi Viswavidyalaya Pundibari, Coochbehar, West Bengal, India
*Corresponding author
Abstract:

Investigation was carried out at the experimental field of Department of Vegetable and Spice Crops, Uttar Banga Krishi Viswavidyalaya, Pundibari, Coochbehar, West Bengal with seven lines, four testers and twenty-eight cross combinations derived from line × tester model to study the genetic performance of tomato genotypes. The significant variances due to lines and testers, line vs. tester and parent vs. hybrid indicated the importance of their contribution towards general combining ability (GCA), specific combining ability (SCA) and presence of heterotic expression for important characters respectively. The magnitude of predictability ratio for all the traits studied was very less than unity indicated preponderance of non-additive gene action for the inheritance of all the traits. Among lines Arka Alok, Arka Saurabh, Arka Vikas and Arka Meghali and among testers Berika and Alisa Craig possess good GCA. Arka Saurabh × Alisa Craig, Arka Ashish × Berika and Arka Vikas × Berika crosses identified as best with good SCA. Arka Saurabh × Alisa Craig followed by Arka Alok × Berika, Arka Meghali × Berika and Arka Ahuti × Berika were best identified crosses with heterotic expression for the yield contributing traits which was due to the involvement of the parents having high GCA and crosses with good specific combining ability.


Keywords: Analysis of Variance, Genetic variance, GCA, Heterosis, Line × Tester, SCA, Tomato
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How to cite this article:

Manjunath, K. V. and Subhamoy Sikder. 2020. Combining Ability, Gene Action and Heterotic Expression Studies for Yield Contributing Traits in Tomato.Int.J.Curr.Microbiol.App.Sci. 9(10): 2838-2850. doi: https://doi.org/10.20546/ijcmas.2020.910.342