Assessment of Genetic Variability and Transmissibility Index in Rice Genotypes (Oryza sativa L.)

Ashish Sheera *

Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Chatha, J and K, India.

Nashra Aftab

Sam Higginbottom University of Agriculture Technology and Sciences, Prayagraj, Uttar Pradesh, India.

Sandeep Rout

Faculty of Agriculture, Sri Sri University, Cuttack, Odisha, India.

Udit Nandan Mishra

Faculty of Agriculture, Sri Sri University, Cuttack, Odisha, India.

Bupesh Sharma

Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Chatha, J and K, India.

R. Sivasankar

Sam Higginbottom University of Agriculture Technology and Sciences, Prayagraj, Uttar Pradesh, India.

*Author to whom correspondence should be addressed.


Abstract

Aim: To assess the Genetic Variability among the accession/ genotype and its contributing traits.

Methodology: A field experiment was conducted using 35 genotypes including 2 checks of rice during the season of kharif, 2017, at the Field Experimental Centre, Department of Genetics and Plant Breeding, SHUATS, Prayagraj, Uttar Pradesh to evaluate genetic variation and heritability of yield and related traits. The experiment was designed with a randomized block design (RBD) with three replications. Analysis of variance revealed significant difference among the genotypes for all traits indicating existence of genetic variability among the accessions.

Results: Highest genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) were recorded for Spikelet’s per panicle, tillers per hill, panicle per hill and grain filling. High heritability in broad sense was obtained for days to 50% flowering (99.6%), days to maturity (98.7%), test weight (97.9%), harvest index (96.9%) and grain yield per hill (96.6%) which is indicating the high heritable portion of variation. High to medium estimate of heritability in genetic advance were obtained for grain yield (38.51), spikelet’s/ panicle (37.94), panicle/ hill (36.97) were indicating the roles of additive gene action and good scope of selection using their phenotype performance.

Interpretation: Considering, all of these characters, spikelet’s per panicle, days to 50% flowering and days to maturity were important yield related traits and could be used for selection in future rice breeding programme.

Keywords: GCV, PCV, Heritability, Genetic Advance, rice genotypes


How to Cite

Sheera, Ashish, Nashra Aftab, Sandeep Rout, Udit Nandan Mishra, Bupesh Sharma, and R. Sivasankar. 2021. “Assessment of Genetic Variability and Transmissibility Index in Rice Genotypes (Oryza Sativa L.)”. International Journal of Plant & Soil Science 33 (18):34-42. https://doi.org/10.9734/ijpss/2021/v33i1830573.