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Indian Journal of Pure & Applied Biosciences (IJPAB)
Year : 2019, Volume : 7, Issue : 6
First page : (53) Last page : (57)
Article doi: : http://dx.doi.org/10.18782/2582-2845.7759

Morphological Traits as Selection Indices in Rice Landraces of Odisha

Pinaky Dey, Simanchal Sahu, Debendranath Bastia and Rajesh Kumar Kar*
Department of Plant Breeding & Genetics, College of Agriculture, OUAT, Bhubaneswar-751003, Odisha
*Corresponding Author E-mail: rajeshkar023@gmail.com
Received: 21.09.2019  |  Revised: 30.10.2019   |  Accepted: 7.11.2019  

 ABSTRACT

Direct selection for grain yield per se is often not reliable due to complex nature, controlled by non-additive gene action and is believed to have low heritability. In most of the cases experimental error associated with yield measurements and inter genotypic competition often bias the outcome of selection for higher yield. Therefore, several workers in different crop plants have emphasized the need of indirect selection for yield through the use of component traits governed by genes with additive effect and having strong correlation with grain yield. As no single trait could be taken as an adequate criterion of selection for yield, therefore, selection indices provide a useful method by making use of several correlated traits for greater efficiency of selection in yield. In the present study on selection indices it revealed that the thirteen character index was superior over the direct selection for yield per se. On the basis of twelve character selection index promising genotypes namely FR 13A, Damodarbhoga, Mrunalini, Ganjeijata, Dhulia, Kadalipendi, Upahar, Kanchan, Ganjamgedi and Kanthakamal may be used for future breeding programme. It was interesting to note that the relative rankings of genotypes selected on the basis of per se performance and index score differed signifying the importance of selection index over direct selection on grain yield.

Keywords: Morphological traits, Per se performance, Rice landraces, Selection indices.

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

Cite this article: Dey, P., Sahu, S., Bastia, D., & Kar, R.K. (2019). Morphological Traits as Selection Indices in Rice Landraces of Odisha, Ind. J. Pure App. Biosci. 7(6), 53-57. doi: http://dx.doi.org/10.18782/2582-2845.7759