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Correlation and Path Coefficient Analysis of Fourteen Different Genotypes of Lablab Bean (lablab Purpureus L.)

Asaduzzaman
Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

M. J. H. Bhuiyan
Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.

M. A. Hossain
Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

Sharif-Ar-Raffi

Abstract/ Executive Summary:

Fourteen genotypes of Lablab bean were studied for sixteen yield and yield contributing characters. The experiment was conducted at Field Laboratory of Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh. Seed yield per plant showed positive and significant correlation with days to maturity, number of raceme per plant, raceme length, pod length, green pod yield per plant, green test weight and shelling percentage and significant negative correlation with days to maturity, number of seeds per pod and protein content at both phenotypic and genotypic levels. Path analysis revealed that green pod length exhibited high positive direct effect on number of raceme per plant, raceme length, green pod width, dry test weight and shelling percentage. The direct negative effects on seed yield were observed by days to maturity, number of flower buds per raceme, green pod yield per plant, green test weight and protein content and revealed the importance of these traits for simultaneous selection of plant for yield improvement.

Keywords: Lablab bean; Correlation; Path coefficient analysis.

Location: Field Laboratory, Dept. of Genetics and Plant Breeding, Bangladesh Agricultural University (BAU), Mymensingh

Start Date: 00-08-2013

End Date: 00-04-2014

Program Area: Variety and Species

Commodity: Lablab bean

Objectives:

The present study was taken to investigate the correlation and path coefficient analysis among yield and its contributing characters in 14 genotypes of Lablab bean.

Methodology:

The field experiment was comprised of fourteen genotypes of Lablab bean growing during rabi season, August 2013 to April 2014 at Field Laboratory, Dept. of Genetics and Plant Breeding, Bangladesh Agricultural University (BAU), Mymensingh; in a Randomized Complete Block Design (RCBD) with three replications. Seeds were sown on 27 August, 2013. All the recommended package of practices was followed to raise a good crop. For this study of correlation and path coefficient analysis, sixteen yield and yield contributing characters, viz., days to 50 % flowering, days to maturity, number of raceme per plant, raceme length, number of flower buds per raceme, number of nodes per raceme, pod length (cm), pod width (cm), number of seeds per pod, green pod yield per plant (kg), green and dry test weight (g), shelling percentage protein content (%) and dry seed yield per plant (g) were recorded from three randomly selected plants in each replication. The correlation coefficient was worked out as per Weber and Morthy (1952) and path coefficient of various characters was calculated by the formula given by Dewey and Liu (1959).

Source of Information: Bangladesh J. Pl. Breed. Genet., 27(1): 37-44, 2014

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Thus, the path coefficient analysis revealed the importance of characters such as green pod length, Days to 50% flowering, yield per plant and 100 pod weight in selection of superior genotypes for pod yield per plant.

Knowledge Management: Journal