Genetic variability and character association studies in groundnut (Arachis hypogaea L.)

Yadlapalli, S. (2014) Genetic variability and character association studies in groundnut (Arachis hypogaea L.). International Journal of Plant, Animal and Environmental Sciences, 4 (4). pp. 298-300.

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Abstract

An experiment was conducted at the Agricultural Research Station, Darsi, during Kharif 2009-10, 2010-11 and 2011-12. The trial was conducted in a randomized block design with three replications for estimation of genetic variability, genetic parameters and correlation coefficients among different yield components. Highly significant variations were observed among the genotypes for all the characters studied. The highest genetic coefficient of variation was observed for no.of pods/plant followed by pod yield, 100 seed weight, no.of branches per plant, plant height and days to 50 % flowering. The highest heritability was observed in 100 seed weight (98.0%) followed by pod yield (96.0%), no.of pods/plant (94.0%), no.of branches /plant (89.0%), plant height (88.0%) and days to 50 % flowering (79.0%). while high values of genetic advance were obtained in all the characters except plant height and days to 50% flowering. Pod yield exhibited significant and positive genotypic correlations with all the characters except with plant height. Number of pods per plant showed positive direct effect on pod yield / plant followed by 100 seed weight, no.of branches/plant and days to 50% flowering. Selection for characters showing high heritability with high genetic advance, positive and high significant correlation and showing high direct effects will helpful in the improvement of yield in the groundnut.

Item Type: Article
Uncontrolled Keywords: PCV, GCV, Character Association, Groundnut
Author Affiliation: Regional Agricultural Research Station, Lam Farm, Guntur-34, Andhra Pradesh, India
Subjects: Crop Improvement
Divisions: Groundnut
Depositing User: Mr T L Gautham
Date Deposited: 02 Sep 2016 09:33
Last Modified: 02 Sep 2016 09:33
URI: http://eprints.icrisat.ac.in/id/eprint/14370

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