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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 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
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 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(12): 2835-2842
DOI: https://doi.org/10.20546/ijcmas.2017.612.330


Multi-Environment Analyses of Genetic Components and Combining Abilities in Relation to Heterosis in Okra [Abelmoschus esculentus (L.) Moench]
Sanket J. More1*, K.N. Chaudhari2, G.B. Vaidya3 and S.L. Chawla2
1ICAR-Central Tuber Crops Research Institute, Sreekariyam PO, Thiruvananthapuram,Kerala 695 017, India
2ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari,Gujarat 396 450, India
3ANKUR Seed Co. PVT. LTD., Nagpur, India
*Corresponding author
Abstract:

Genetically designed analyses for combining abilities, heterosis, genetic advance and heritability were made utilizing line x tester mating design having fourteen divergent parents under multiple environments. Significant mean squares for general combining ability (GCA) and specific combining ability (SCA) indicated joint role of additive and non-additive gene action for most of the characters. The predictability ratio of σ2 gca /σ2 sca was less than 1for all the characters showing preponderance of non-additive gene actions. Based on the GCA effects of parents, VIO 47672 among lines and GJO – 3 among testers were observed to be the best overall general combiners for yield and yield components. The outstanding five hybrids viz., VIO 47672 x GJO – 3, IC – 045796 x GJO – 3, IC – 111493 x GJO – 3, IC – 045796 x GAO – 5 and VIO 47672 x GAO – 5 were identified for developing high yielding F1 hybrids of Okra with many desirable traits based on their SCA and heterosis effects. Assessment of heritability percentages in the narrow sense (h2ns; %) for the various studied traits, were found to be within the range of 4.19% for the first flowering node to 46.33% for fruit weight. On the other hand GAM (%) ranged between 0.93% for the first flowering node and stalk length to 30.42% for the number of branches.


Keywords: Combining ability, Gene action, Heterosis, Multi-environment, Okra, Yield.
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How to cite this article:

Sanket J. More, K.N. Chaudhari, G.B. Vaidya and Chawla, S.L. 2017. Multi-Environment Analyses of Genetic Components and Combining Abilities in Relation to Heterosis in Okra [Abelmoschus esculentus (L.) Moench].Int.J.Curr.Microbiol.App.Sci. 6(12): 2835-2842. doi: https://doi.org/10.20546/ijcmas.2017.612.330