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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.2017.6(8): 1558-1571
DOI: https://doi.org/10.20546/ijcmas.2017.608.187


Studies on Heterosis and Combining Ability in Rice (Oryza sativa L.) for Morpho-Physiological Traits under Normal and Saline Conditions
Archana Devi, Preeti Kumari, Ranjan Dwivedi, Saket Dwivedi, O.P. Verma, P.K. Singh and D.K. Dwivedi*
Department of Genetics and Plant Breeding, Department of Plant Molecular Biology and Genetic Engineering, N. D. University of Agriculture and Technology, Kumarganj, Faizabad – 224229 - Uttar Pradesh, India
*Corresponding author
Abstract:

An experiment was conducted to evaluate the performance of 54 F1 developed by crossing of 18 lines with 3 testers. Analysis of variance revealed highly significant difference in treatments, parents, crosses and line × tester for days to 50% flowering, plant height, flag leaf area and grain yield per plant under both normal and saline conditions. Parent vs. crosses were highly significant for plant height and grain yield per plant while significant for days to 50% flowering and flag leaf area in normal condition but in case of saline condition highly significant differences were found for plant height and flag leaf area and non-significant for days to 50% flowering and grain yield per plant. Analysis of variance revealed highly significant differences among lines for grain yield per plant under both normal and saline conditions while plant height for saline condition. Tester was non-significant for all the characters under both normal and saline conditions. The estimates of variance of specific combining ability effects, ratio of variance of general combining ability to specific combining ability and degree of dominance indicated preponderance of non-additive gene effects for each trait. On over all bases, role of lines in the expression of most of the morphological traits were more than testers and line × tester interaction under both conditions.


Keywords: Standard heterosis, Combining ability, Morphological traits and rice.
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How to cite this article:

Archana Devi, Preeti Kumari, Ranjan Dwivedi, Saket Dwivedi, O.P. Verma, P.K. Singh and Dwivedi, D.K. 2017. Studies on Heterosis and Combining Ability in Rice (Oryza sativa L.) for Morpho-Physiological Traits under Normal and Saline ConditionsInt.J.Curr.Microbiol.App.Sci. 6(8): 1558-1571. doi: https://doi.org/10.20546/ijcmas.2017.608.187