International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 9, Issue:6, June, 2020

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(6): 1167-1174

Evaluation of Variability, Heritability and Genetic Diversity in Rainfed Rice Genotypes
S. Muthuramu* and T. Ragavan
Agricultural Research Station, Tamil Nadu Agricultural University, Paramakudi, Tamilnadu, India
*Corresponding author

The experiment was conducted under rainfed rice ecosystem to investigate genetic variation, heritability and diversity of yield and related attributes of 34 advanced rice cultures. The analysis of variance revealed that all the treatments are significant for various characters under studied. The higher magnitude of PCV and GCV were recorded for number of filled grains per panicle, number of panicles per square metre plot area and plant height. High heritability coupled with high genetic advance was recorded for plant height and number of filled grains per panicle indicated the major role of additive gene action in the inheritance of this trait. Maximum number of genotypes (15 genotypes) was grouped in cluster I. Maximum inter cluster distance was observed between cluster IV and VI (36.32) indicating wider genetic diversity between genotypes. The intra cluster distance was higher in cluster VI (4.07) indicates hybridization involving genotypes within the same clusters may result in good cross combinations. Among the ten traits studied, plant height contributed maximum divergence (35.29%) followed by days to fifty per cent flowering (22.82%), grain yield (14.80) and filled grains per panicle (9.09) and these characters may be given importance during hybridization programme in rainfed rice ecosystem.

Keywords: Variability, heritability, genetic advance, diversity, rainfed rice

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How to cite this article:

Muthuramu. S. and Ragavan. T. 2020. Evaluation of Variability, Heritability and Genetic Diversity in Rainfed Rice Genotypes.Int.J.Curr.Microbiol.App.Sci. 9(6): 1167-1174. doi:
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.