Genetic Divergence, Character Correlations and Heritability Study in 22 (Arachis hypogaea L.) Accessions of Groundnut

Makinde, S.C.O. and Ariyo, O.J. (2012) Genetic Divergence, Character Correlations and Heritability Study in 22 (Arachis hypogaea L.) Accessions of Groundnut. Journal of Plant Studies , 2 (1). pp. 7-17.

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Abstract

Twenty two groundnut genotypes collected from International Crops Research Institute for Semi Arid Tropics (ICRISAT) and local sources (Samaru, UNILORIN and UNAAB) were cultivated in Lagos (60º 36’N, 30º 34’E) and Abeokuta (70º 10’N, 30º 20’E) during 2010 planting seasons, to determine the genetic variability and performance of the genotypes. Data collected on ten (10) characters and yield was subjected to multivariate analysis to determine genetic divergence among the genotypes. Number of pods per plant showed significant positive correlation with yield per plant in both environments also had the largest direct positive effect on yield per plant (0.66, 0.70). Days to maturity showed the largest direct negative effect of -0.33 and -0.36 in Lagos 2003 and Abeokuta 2004 respectively. Heritability estimates ranged from 62.34% to 90.67 and 24.75 to 89.46 for number of branches per plant at flowering and days to maturity in (E1) Lagos and (E2) Abeokuta, respectively. The mean squares of the combined analysis of variance revealed significant genotypes and Genotype x Environment interactions on yield per plant.

Item Type: Article
Uncontrolled Keywords: Arachis hypogaea, genetic variability, heritability, character correlation
Author Affiliation: Department of Botany, Faculty of Science. Lagos State University, Lagos, Nigeria, College of Plant Science, University of Agriculture Abeokuta, Abeokuta, Nigeria
Subjects: Crop Improvement
Divisions: Groundnut
Depositing User: Mr. SanatKumar Behera
Date Deposited: 19 Sep 2012 10:57
Last Modified: 19 Sep 2012 10:58
Official URL: http://www.ccsenet.org/journal/index.php/jps/artic...
URI: http://eprints.icrisat.ac.in/id/eprint/7988

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