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Genetic Variation and Character Association in Mesta ( Hibiscus Sabdariffa L.)

M. M. Hussain
CSO
Genetic Resources and Seed Division 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.

Md. Nazrul Islam
Director (Administration and Finance)
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:

Twelve diverse genotypes of mesta (Hibiscus safdariffa L.) were studied to find out the genetic variability, character association and path coefficient for fibre yield and its component traits. Significant variations were observed 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, days to flower, plant height, number of flowers per plant, number of capsules per plant and number of seeds per capsule indicated low environmental influences on the expression of these characters. High heritability coupled with high genetic advance as percentage of mean for number of capsules per plant, number of flowers per plant, dry fibre weight and green weight without leaves suggested effective selection for the improvement of these characters 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 without leaves had the highest direct effect on dry fibre weight. Thus selection on fibre yield in mesta through green weight without leaves will be effective.

Keywords: Variability, Character association, Path coefficient, Mesta (Hibiscus safdariffa L.)

Location: Experimental field of Bangladesh Jute Research Institute (BJRI), Dhaka, Bangladesh.

Start Date: 00-00-2005

End Date: 00-00-2005

Program Area: Variety and Species

Commodity: Mesta

Objectives:

To find out the genetic variability, interrelationship among different characters and the direct and indirect contributions of characters toward fibre yield.

Methodology:

Twelve diverse genotypes of mesta were grown in a Randomized complete Block Design (RCBD) with three replications in 2005 at the experimental field of Bangladesh Jute Research Institute (BJRI), Dhaka. The genotypes were HS-24, PI-468410, PI-468413, Acc. 3574, PI-SSRH/006, Y/146H, JRC/617H, 300M, Acc.2932, Acc. 2065, Acc.2934 and Raikhali. The genotypes were sown on 16 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. Intercultural operations (weeding, thinning, irrigation and drainage, plant protection measures etc.) were done at proper time for ensuring proper growth of the crop. Ten competitive plants of each genotype from each replication were randomly selected and harvested at 120 days crop age. Observations were recorded on days to flower, plant height (m), base 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 seed per capsule, 1000 seed weight (g.) and dry fibre weight (g./pl) by using the descriptor published by the then International Jute Organization. Mean values for each character were subjected to statistical analysis. Genotypic (GCV) and Phenotypic (PCV) coefficient of variation were measured in accordance with the formula given by Burton and De Vane (6). Heritability (h2b) and genetic advance (GA) were determined using the method, suggested by Singh and Chowdhury. Phenotypic and genotypic correlation coefficient were measured using the formula of Al-Jibouri et al. Path analysis was done following the formula by Dewey and Lu.

Source of Information: Bangladesh Journal of Jute and Fibre Research, 2014, Volume-31, no.1&2, pp. 81-89.

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 15000

Total Budget (Tk.) : 15000

Achievement/Findings:

Selection on fibre yield in mesta through green weight without leaves will be effective

Knowledge Management: Journal