GENETIC PARAMETERS , CORRELATIONS AND PATH COEFFICIENT IN COTTON

I. Mohammed, Layla

	GENETIC PARAMETERS , CORRELATIONS AND PATH COEFFICIENT IN COTTON
AL-TAQANI
Article 1, Volume 27, Issue 3, 2014, Pages 0-0
Author
Layla I. Mohammed
Abstract
Abstract: A field experiment was carried out during 2008-2009 at the experimental Field of Crop Science Dept. – College of Agriculture – Abu-Graib. The present study of genetic parameters, correlation and path analysis involves several genotypes of cotton for the information of interrelationship between yield and other important yield components which could be used as selection criteria in the breeding programme. Seventeenth genotypes of cotton (Gossypium hirsutum L.) included Cocker-310, Abu-Graib, Dise, Marsoomi-5, Lashata, 113, Pamair, Kafco, Ashur-1, Macneer, Rabeaa-122, Pac- cot-189, Marsoomi-4, W888, 4447, 4435 and 4200 were crossed, during the season of 2008. The traits for 79 single crosses and 17 parents were tested during 2009 using RCBD with three replicates. Significant differences were found among genotypes for all characters studied. The coefficient of phenotypic variation was found to be greater than genotypic coefficient of variance for all the characters studied. Mean of boll weight, no. of total boll and no. of sympodial branches were gave higher value of genotypic coefficient of variance (39.07, 37.47 and 35.04 respectively). High heritability coupled with high genetic advance was noticed for earliness, no. of sympodial branches, no. of total bolls, mean of boll weight and seed cotton yield, while no. of open bolls was gave high heritability (0.96) but the genetic advance was lower (2.01). Seed cotton yield had positive significant genotypic and phenotypic correlation and positive direct effect with no. of sympodial branches and no. of open bolls. It was concluded that these characters and boll weight should be considered as important selection criteria for yield improvement in cotton.

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