INTERNATIONAL JOURNAL OF PURE & APPLIED BIOSCIENCE

ISSN : 2320-7051

  • No. 772, Basant Vihar, Kota

    Rajasthan-324009 India

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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 6
First page : (393) Last page : (397)
Article doi: : http://dx.doi.org/10.18782/2320-7051.7159

Selection Efficiency for Grain Yield and its Attributing Traits in Early Segregating Generations of Rice (Oryza sativa L.) under Aerobic Condition

Manohara, K. K.1* and Shashidhar, H. E.2

1Crop Science Section, ICAR-Central Coastal Agricultural Research Institute, Old Goa - 403 402, Goa, India
2Department of Genetics & Plant Breeding, University of Agricultural Sciences,
GKVK, UAS Bangalore, 560 065, Karnataka, India
*Corresponding Author E-mail: manohar.gpb@gmail.com
Received: 7.11.2018 | Revised: 16.12.2018 | Accepted: 22.12.2018  

 

 ABSTRACT

The aim of this study was to estimate the inter-generation correlation and narrow sense heritability between F2 and F3 generations in two rice crosses viz., BI 27 X IR 49 and BI 43 X IR 49 under aerobic condition to assess the worth of early generation selection.  High values of correlation and narrow sense heritability was observed for characters like productive tillers per hill, number of tillers per hill, grains per panicle, panicle length and test weight in both the crosses, indicating the strong association for these traits between F2 and F3 generation and hence, have better chances of improvement through selection. Characters grain yield, plant height and days to fifty per cent flowering in both the crosses, per cent fertility in cross I and straw yield per plant and harvest index in cross II showed low correlation and heritability values, suggesting there is high influence of genotype X environment interaction, and hence postponing the selection for these traits to later generations can be advantageous. It is concluded that selection in early generations will be more effective for yield component traits than yield per se.

Key words: Inter-generation Correlation, Heritability, Aerobic Rice, Additive Variance. 

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Manohara, K.K. and Shashidhar, H.E., Selection Efficiency for Grain Yield and its Attributing Traits in Early Segregating Generations of Rice (Oryza sativa L.) under Aerobic Condition, Int. J. Pure App. Biosci.6(6): 393-397 (2018). doi: http://dx.doi.org/10.18782/2320-7051.7159




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