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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 5
First page : (814) Last page : (821)
Article doi: : http://dx.doi.org/10.18782/2320-6242

Genetic Variability Analysis and Trait Association for Resistance Gene Pyramided F2 Population in Rice (Oryza sativa L.)

Ashish Kumar Panigrahi¹*, Muthusamy Bharathi² and Nachimuthu Kumaravadivel³

¹Seed Testing Laboratory, Bargarh, OSSOPCA
²Agriculture College and Research Institute, Kudumiyanmalai, TNAU
³Department of Plant Molecular Biology and Bioinformatics, TNAU, Coimbatore
*Corresponding Author E-mail: Panigrahi.ashish99@gmail.com
Received: 10.02.2018  |  Revised: 24.03.2018   |  Accepted: 3.04.2018  

 ABSTRACT

The current experiment comprised of 186 number of plants of F2 segregating generation for which genetic variability parameters, correlation and path coefficient analysis were estimated for eight agro-morphological traits. The PCV was recorded higher than the GCV for all the character studied. High GCV coupled with high PCV was exhibited by number of tillers, number of productive tillers, number of filed grains and single plant yield. Higher GCV and PCV estimate provide wider scope of selection for elite segregants. High heritability coupled with high genetic advance was recorded for single plant yield. The presence of high heritability with high genetic advance showed additive effects of the gene and least affected by the environmental condition. Single plant yield has a highly significant and positive correlation with plant height, number of tillers, number of productive tillers, panicle length, number of filled grain per panicle and hundred grain weight. The path coefficient analysis revealed that positive direct effect towards single plant yield was exhibited by number of productive tillers, number of filled grain per panicle and hundred grain weight.

Key words: Phenotypic coefficient of variation (PCV), Genotypic coefficient of variation (GCV), Heritability (h2), Genetic advance (GA) and Correlation.

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

Cite this article: Panigrahi, A.K., Bharathi, M. and Kumaravadivel, N., Genetic Variability Analysis and Trait Association for Resistance Gene Pyramided F2 Population in Rice (Oryza sativa L.), Int. J. Pure App. Biosci.6(5): 814-821 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6242