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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 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
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.2020.9(9): 866-881
DOI: https://doi.org/10.20546/ijcmas.2020.909.109


Estimation of Heterosis, Gene Action and Combining Ability over Environments for Improvement of Fruit Yield and its Related Traits in Okra [Abelmoschus esculentus (L.) Moench]
D. Vekariya1*, A. I. Patel2, K. G. Modha1, C. V. Kapadiya2,C. Mali3 and A. A. Patel1
1Genetics and Plant Breeding, NMCA, 2ASPEE College of Horticulture and Forestry, 3Main Sugarcane Research Station, NAU, Navsari-396 450, India
*Corresponding author
Abstract:

The present investigation was carried out to study heterosis, combining ability and gene interactions over environments of parents and their crosses in kharif 2018. The experimental material, consisting of eleven lines, five testers and their resultant 55 hybrids along with a commercial hybrid check ‘OH-102’ of okra were sown in three different locations of south Gujarat viz., College farm, NMCA, NAU, Navsari (E1), Cotton Research Sub Station, NAU, Achhalia (E2) and Regional Rice Research Station, NAU, Vyara (E3). Observations on sixteen traits were recorded for each and every location. The analysis of variances for individual as well as pooled over environments revealed considerable genetic variation present among the parents and their hybrids for all the traits under study. The hybrids viz., JOL-14-10 X Arka Abhay, JOL-14-10 X GJO-3 and JOL-13-05 X GJO-3 exhibited higher but non-significant standard heterosis for fruit yield at all locations. Non-significant but desirable standard heterosis for fruit yield and its component traits suggested that there is no scope of exploiting heterosis commercially, but the possibility of isolating desirable segregants among these hybrid combinations. The higher magnitude of non-additive variance was higher for fruit yield and its contributing traits revealed the preponderance of non-additive gene action for the majority of the traits, hence these traits can be improved through recurrent selection for specific combining ability or through heterosis breeding program. The estimates of gca effects indicated that parents viz., JOL-14-10, GJO-3 and JOL-13-05 were good general combiners for fruit yield and its contributing traits. None of the hybrids exhibited higher per se performance, sca effects and standard heterosis for fruit yield for all locations.


Keywords: Heterosis, Gene interaction, Combining ability, Line x Tester analysis, okra [Abelmoschus esculentus (L.) Moench]
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How to cite this article:

Vekariya, R. D., A. I. Patel, K. G. Modha, C. V. Kapadiya, S. C. Mali and Patel, A. A. 2020. Estimation of Heterosis, Gene Action and Combining Ability over Environments for Improvement of Fruit Yield and its Related Traits in Okra [Abelmoschus esculentus (L.) Moench].Int.J.Curr.Microbiol.App.Sci. 9(9): 866-881. doi: https://doi.org/10.20546/ijcmas.2020.909.109