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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 5
First page : (696) Last page : (701)
Article doi: : http://dx.doi.org/10.18782/2320-6975

Genetic Variability Studies for Nitrogen Use Efficiency in Rice

Savitri A. M.¹, Uma M. S.², Lohitashwa H. C.³, Denesh G. R.⁴, Shobha D.⁵, Geetha N.⁶ and Naveen V. M.⁷

*Professor and Head AICRP on Sunflower ZARS, GKVK, Bengaluru Karnataka India
*Corresponding Author E-mail:umauas@gmail.com
Received: 2.08.2018  |  Revised: 29.08.2018   |  Accepted: 6.09.2018  

 ABSTRACT

A field Experiment was conducted to study the genetic variability for nitrogen use efficiency and yield related traits in two crosses of  local rice genotypes which includes low nitrogen use efficient genotypes (Bettasanna, Banavasi selection) and high nitrogen use efficient genotypes (Kaduvakalongi, Navali) at the college of Agriculture V.C. Farm Mandya during Rabi-Summer 2016-17. High Genotypic Coefficient of Variability (GCV) and Phenotypic Coefficient of variability (PCV) values with less difference were observed for nitrogen use efficiency in the cross Kaduvakalongi × Banavasi selection indicating less influence of  environmental factors on their expression. Moderate genotypic coefficient of variability (GCV) and Phenotypic coefficient of variability (PCV) values with less difference observed for nitrogen use efficiency in the cross Bettasanna × Navali which indicated the influence of both additive and non-additive gene action in the inheritance of  these traits. High heritability coupled with high genetic advance were recorded for yield per plant, Nitrogen use efficiency in both the crosses this indicated that these traits were predominantly controlled by additive gene action and amenable for selection.

Key words:  Nitrogen use Efficiency, Genetic Advance, GCV, PCV, Heritability.

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

Cite this article: Savitri, A.M., Uma, M.S., Lohitashwa, H.C., Denesh, G.R., Shobha, D., Geetha, N., Naveen, V.M., Genetic Variability Studies for Nitrogen Use Efficiency in Rice, Int. J. Pure App. Biosci.6(5): 696-701 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6975