GENETIC VARIABILITY STUDIES FOR YIELD AND YIELD COMPONENTS IN RICE (Oryza sativa L.)

S.D. BOTHRA¹*, G.M. LAL², S.S. LAL³, RAJESH SINGH^4
1Department of Genetics and Plant Breeding, Sam Higginbottom Institute of Agriculture, Technology & Sciences, Allahabad, 211007, U.P
²Department of Genetics and Plant Breeding, Sam Higginbottom Institute of Agriculture, Technology & Sciences, Allahabad, 211007, U.P
³Department of Biochemistry, Sam Higginbottom Institute of Agriculture, Technology & Sciences, Allahabad, 211007, U.P.
⁴Department of Agronomy, Sam Higginbottom Institute of Agriculture, Technology & Sciences, Allahabad, 211007, U.P.
* Corresponding Author : shripalbothra9@gmail.com

Received : 06-07-2016     Accepted : 01-08-2016     Published : 27-10-2016
Volume : 8     Issue : 51       Pages : 2198 - 2201
Int J Agr Sci 8.51 (2016):2198-2201

Keywords : Rice (Oryza sativa L.), GCV, PCV, heritability and genetic advance.
Academic Editor : Bhanu K Vasanta
Conflict of Interest : None declared
Acknowledgements/Funding : None declared
Author Contribution : None declared

An experiment was oversaw to determine genetic variability of yield and yield components in Rice at the Field Experimentation Site of Department of Genetics and Plant Breeding, SHIATS, Allahabad during Kharif-2015 in Randomized Block Design having 30 genotypes grown in three replications. The data were recorded for 13 quantitative characters to study genetic variability, heritability and genetic advance. The highest grain yield per plant was observed in genotype KR 15-01. High estimates of GCV and PCV were observed for biological yield per plant followed by grain yield per plant and panicles per plant. High measure of heritability was observed for test weight and days to maturity. Genetic advance as per cent of mean was highest for test weight followed by biological yield per plant, number of panicles per plant, grain yield per plant. High heritability together with modest genetic advance was observed for days to maturity. High genetic advance as per cent of mean was recorded for test weight followed by biological yield per plant, panicles per plant, grain yield and tillers per plant. High heritability coupled with high genetic advance as percent of mean was observed for test weight followed by panicles per plant and biological yield per plant. This shows that selection is effective for the improvement of these characters.