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Correlation and Path Coefficient Analysis of Yield and Yield Contributing Characters in Upland Cotton (gossypium Hirsutum Linn.)

A. K. M. R. Alam and
Chief Scientiflc Officer and Head.
Plant Breeding Division, BARI, Joydebpur, Gazipur 1701, Bangladesh

H. Islam
Plant Breeding Division, BARI, Joydebpur, Gazipur 1701, Bangladesh

Abstract/ Executive Summary:

Studies on correlation and path -coefficient analysis were conducted with twenty genetically diverse lines of upland cotton (Gossypium hirsutum Linn.). Genotypic correlation coefficients were higher than the corresponding phenotypic correlation coefficients in all cases. Seed cotton yield per plant exhibited positive and significant genotypic and phenotypic correlations with number of boll per plant and boll weight. Path coefficient analysis revealed that the number of bolls per plant had the maximum positive direct effect on seed cotton yield per plant followed by boll weight. Selection for these two characters seemed to be most effective in the present materials.

Keywords: Correlation, Path coefficient analysis, Upland cotton.

Location: Cotton Research Station Mahiganj, Rangpur, Bangladesh

Start Date: 00-00-1989

End Date: 00-00-1990

Program Area: Variety and Species

Commodity: Cotton

Objectives:

To find out the appropriate plant attributes for selection towards development of high yielding varieties of upland cotton.

Methodology:

Twenty genetically diverse genotypes of upland cotton (viz. LB2coCAS, UG-3774, S- 71803985, Beli Izvor, UPL-CT-3, S-71803785, GARANT, TAMCOT-SP-37, BAC-798185, BLCDPS, LEBOCAS x Wilt, CABCS-1-1-83, S-8484, OCAHUS, S-684, BLLEBOS, CACES-1-1-83, LEBOCAS, CABCS-1-83 and Rupali ; collected from different cotton growing countries and one local check) were grown in a randomized complete block design with four replications at Cotton Research Station, Bangladesh Agricultural Research Institute, Rangpur in 1989-90 during rabi season. Plot size was 2.4x 6.0 m². Row to row and plant to plant distances were 60 cm and 30 em, respectively. Recommended agronomic practices were followed during crop growth. Observations were recorded from 10 random plants in each plot on first sympodial node number, number of sympodia per plant, number of bolls per plant, boll weight (g), ginning percentage and seed cotton yield per plant (g). Phenotypic and genotypic correlations were calculated according to the method suggested by Al-Jibouri et al. (1958) and path-coefficient analysis was carried out using genotypic correlation coefficient as suggested by Dewey and Lu (1959).

Source of Information: Ann. Bangladesh Agric. 1(2): 87-90, 1991

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Number of sympodia and first sympodial node number which indicated that number of sympodia can be increased through the decrease of first sympodial node number . But number of sympodia was negatively and significantly correlated with boll weight indicating that higher number of sympodia can decrease the boll weight Seed cotton yield and number of bolls were negatively and significantly correlated with ginning percentage. Evidently, seed cotton yield can be increased with the decrease of ginning percentage and ginning percentage can be decreased with the increase of number of bolls.

Knowledge Management: Journal