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Genetic Variability and Path Analysis of Yield Components in Kenaf (hibiscus Cannabinus L.)

M. M. Hussain
CSO
Genetic Resources and Seed Division Bangladesh Jute Research Institute Manik Mia Avenue, Dhaka-1207.

Md. Nazrul Islam
Director (Administration and Finance)
Bangladesh Jute Research Institute Manik Mia Avenue, Dhaka-1207.

S. M. Mahbub Ali
PSO
PTC Division,Bangladesh Jute Research Institute Manik Mia Avenue, Dhaka-1207.

C. K. Saha
CSO
PTC Division,Bangladesh Jute Research Institute Manik Mia Avenue, Dhaka-1207.

Abstract/ Executive Summary:

Variability, correlation and path coefficient analysis were studied for twelve yield and yield components in twelve diverse genotypes of Kenaf (Hibiscus cannabinus L.). The genotypes differed significantly in respect of all the characters studied. The difference between phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) was narrow for the characters dry fibre weight, dry stick weight, green weight with and without leaves and days to flower indicated low environmental influences on the expression of these characters. High heritability coupled with high genetic advance as percentage of mean for important fibre yield components indicated low selection pressure for fibre yield is effective as they are governed by additive gene action. Green weight with and without leaves and dry stick weight showed highly significant positive association with dry fibre weight. Green weight with leaves had the highest direct effect on dry fibre weight. Results indicated that the most important character for selection was green weight with leaves.

Keywords: Kenaf ,Genetic variability, Heritability, Path analysis

Location: Experimental field of BJRI, Dhaka, Bangladesh.

Start Date: 02-04-2005

End Date: 30-08-2005

Program Area: Variety and Species

Commodity: kenaf

Objectives:

To study the variability among genotypes and to find out the relationship among fibre yield and yield attributes and their contribution to fibre yield.

Methodology:

Twelve genotypes of Kenaf collected from the Gene Bank of Bangladesh Jute Research Institute (BJRI) namely, HC-2, HC-95, DS/024H, DS/028H, PI-270104, PI-329192, PI-343144, PI-365441, CPI-61000, CPI-72117, FJ/017H and KAI/SUC/044 were grown at the experimental field of BJRI, Dhaka. The experiment was laid out in the Randomized complete Block Design (RCBD) with three replications. Seeds were sown on 2 April in single row of 3 meter long with spacing of 30, 60 and 10 cm between rows, replications and plants respectively. Standard production technology was adopted to raise a good crop under optimum management. Ten competitive plants of each genotype from each replication were selected randomly and harvested at 120 days of crop age. Observations were recorded on days to flower, plant height (m), basal diameter (mm), node number, green weight with leaves (g./pl), green weight without leaves (g./pl), dry stick weight (g./pl), number of flowers per plant, number of capsules per plant, number of seeds per capsule, 1000 seed weight (g.) and dry fibre weight (g./pl) following the descriptor published by the then International Jute Organization (IJO). The data were analysed to estimate the genotypic and phenotypic variances using the formula of Burton and De Vane (1953). Genotypic (GCV) and Phenotypic (PCV) coefficients of variation were measured in accordance with the formula given by Burton and De Vane(1953) . Heritability (h2b) and genetic advance (GA) were determined using the method suggested by Singh and Chowdhury (1985). Phenotypic and genotypic correlation coefficient were measured using the formula of Al-Jibouri et al.(1958). Path analysis was done following the formula by Dewey and Lu (1959).

Source of Information: Bangladesh Journal of Jute and Fibre Research, 2014, Volume-31, no.1&2, pp. 65-74.

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 15000

Total Budget (Tk.) : 15000

Achievement/Findings:

Results indicated that the most important character for selection was green weight with leaves.

Knowledge Management: Journal