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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 6
First page : (656) Last page : (662)
Article doi: http://dx.doi.org/10.18782/2320-7051.3014

Restricted Selection in Paddy [Oryza sativa (L.)] for Yield and Quality Components

Ch. Santhi Priya1 and D. Ratna Babu2*
1Department of Genetics and Plant Breeding, Agricultural College, Bapatla
2Regional Agricultural Research Station, Lam, ANGRAU, Guntur-34
*Corresponding Author E-mail: didlaratnababu@gmail.com
Received: 24.05.2017  |  Revised: 28.06.2017   |  Accepted: 3.07.2017  


Expected genetic advances of eleven different traits in forty diverse genotypes of paddy were estimated using restricted selection by restricting selection to only ten traits at a time without changing the per se of the eleventh trait. The characters considered for the present investigation are days to 50% flowering, days to maturity, plant height, panicle length, productive tillers per plant, grains per panicle, test weight, kernel length, kernel breadth, L/B ratio and grain yield per plant. The genetic advances were estimated by assigning equal economic weights to all characters as well as by using inverse of means as economic weights. In both the cases the kernel breadth recorded higher values of genetic advance in almost all cases of restricted selection. The present study also validated our earlier findings that the results and conclusions follow similar trend in both the ways of assigning economic weights i.e., by taking ‘equal’ economic weights and using ‘inverse of means’ of respective characters as economic weights.

Key words: Restricted selection, Paddy, Economic weights.

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

Cite this article: Priya, C.S. and Babu, D.R., Restricted Selection in Paddy [Oryza sativa (L.)] for Yield and Quality Components, Int. J. Pure App. Biosci. 5(6): 656-662 (2017). doi: http://dx.doi.org/10.18782/2320-7051.3014