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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 5
First page : (863) Last page : (871)
Article doi: : http://dx.doi.org/10.18782/2320-6923

Genetic Variability Studies in Segregating Generation for Yield and Component Traits in Rice (Oryza sativa L.)

H. R. Patel¹*, V. P. Patel², P. B. Patel³ and U. V. Patel¹

¹PG Scholar, ²Associate Research Scientist, ²Regional Rice Research Station,³Associate Professor (Pl. Br.),
³Main Rice Research Centre (NARP),
Navsari Agricultural University, Navsari – 396 450. (Gujarat) India
*Corresponding Author E-mail: patelhardy97@gmail.com
Received: 9.09.2018  |  Revised: 16.10.2018   |  Accepted: 21.10.2018  

 ABSTRACT

Rice is the premier staple food among the Indian population. Therefore, a better insight to the association of yield with its component traits can be helpful in improving the paddy yield. The present study comprised of F3 segregating progenies of two cross viz.,    Cross I (IR-28 x GAR-13) and Cross II (GR-7 x GAR-13) of rice were evaluated to assess the genetic variability, heritability and genetic advance, correlation and direct and indirect effects among yield and yield components. The progenies were evaluated during Summer-2016. The results corresponding to analysis of variance showed significant progeny mean square values for all the traits for all the F3 progenies studied. The progenies of the both crosses had higher values of GCV and PCV for grain yield per plant and straw yield per plant indicating that there is great scope for improvement by applying selection on these traits in desirable direction. The progenies of both the crosses had high heritability coupled with high genetic advance as percent mean for grain yield per plant and straw yield per plant was observed. The correlation studies revealed that in both crosses panicle length, straw yield per plant and harvest index showed significant positive correlation with grain yield per plant. Path analysis revealed that straw yield per plant and harvest index had high positive direct effect on grain yield per plant.

Key words: Rice (Oryza sativa L.), Genetic variability, Heritability and Genetic advance, Correlation and Path coefficient

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

Cite this article: Patel, H.R., Patel, V.P., Patel, P.B. and Patel, U.V., Genetic Variability Studies in Segregating Generation for Yield and Component Traits in Rice (Oryza sativa L.), Int. J. Pure App. Biosci.6(5): 863-871 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6923