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Analysis of Comparative Genetic Diversity in Two Cultivated Species of Jute

Anita Roy
Department of Genetics and Plant Breeding, AINPJ & AF, Kalyani centre

Sourav Hazari
Corresponding author
Department of Genetics and Plant Breeding, Bidhan Chandra Krishi Viswavidyalaya, W. B., India

Sudip Bhattacharya
Department of Genetics and Plant Breeding, Bidhan Chandra Krishi Viswavidyalaya, W. B., India

Abstract/ Executive Summary:

Cultivated species of jute (Corchorus olitorius L. and Corchorus capsularis L.) are distinct in their growth and characteristics related to dry matter and fibre yield. The present study was planned to evaluate 77 varieties of jute including two checks, each of C. capsularis and C. olitorius. Characterizations of genotypes of both the species were also carried out on the basis of five marketable traits with their correlation and cluster analysis of them to study the diversity pattern, based on these characters. However they showed considerable variation which indicates that overall genetic variability in the population and there is enough scope of selection. The most interesting parameter being the dry fibre weight and fibre%, was found to be more in C.olitorius lines (mean fibre weight was 11.71g and mean fibre% was 6.82%) and OIJ-07 recorded the highest fibre% of 8.28 and also the highest fibre wt of 15.26g. In case of C.capsularis the mean fibre % was less (mean 5.83%). When the correlation was studied about the fibre wt with plant height, basal diameter, green wt and fibre %, it represented a strong positive correlation with the green weight as expected and in both the cases it was around 0.8-0.9 depicting that the green weight can be taken as indirect index for selection in the advance materials.

Keywords: Selection index, Diversity, Cluster analysis, Marketable traits

Location: In Bangladesh

Start Date: 00-00-2015

End Date: 00-00-2016

Program Area: Variety and Species

Commodity: Jute

Objectives:

To evaluate 77 varieties of jute including two checks, each of C. capsularis and C. olitorius.

Methodology:

The experimental materials comprising of 75 germplasms & 2 released verities each of two species (C. olitorius & C.capsularis) which were collected from AINPJ&AF. The released varieties of tossa jute and white jute are JRO-524 & JRO-204 and JRC-517 & JRC-698 respectively. The experimental materials were grown in a randomized block design with three replications at the Mondouri Teaching Farm of Bidhan Chandra Krishi Viswavidyalaya (West Bengal) during 2015- 2016 with plot size 6.0 x 1.60 m2 with 4 lines in each plot. Row to row and plant to plant distances were 25 cm and 10 cm, respectively. Standard package of practices were followed to raise the crop. Crop was harvested at 120 days after sowing. Data were recorded for five quantitative characters viz. plant height (cm), basal diameter (cm), green weight (gm), fibre weight (gm) and fibre percentage [(Fibre weight / Green weight)×100]. Plant height was recorded as height of the main stem measured from ground level to the point of forking at pre bud stage (before the development of first flower). Observations were recorded on 10 randomly selected plants in each of three replications at specified stages of crop growth period when the characters under study had full expression. Genetic analysis was carried out using Excel stat and DARwin software programme.

Source of Information: Int.J.Curr.Microbiol.App.Sci (2020) 9(1): 221-230; ISSN: 2319-7706 Volume 9 Number 1 (2020)

Article Link (Online Journal): https://doi.org/10.20546/ijcmas.2020.901.025

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

All the genotypes varied significantly for all the traits under observation in both the species. From the mean performance it was observed that highest plant height (327.33 cm) was observed in case of C. olitorius (OIJ 29) followed by OIJ 24 (327.17 cm). By observing overall mean performances, plant height of C. capsularis genotypes are generally shorter than that of C. olitorius as was observed in the mean which was 255.6 cm for white jute and 294.66 cm in case of Tossa jute. Same result observed by Hossain and Sasmal 2006. Highest plant height (317.2 cm) was observed in case of white jute is (CIJ 01) followed by CIN 22 (310.7 cm). Among the three clusters maximum number of genotypes were contained in cluster 1 with 79 lines followed by cluster 2 (55 lines) and cluster 3 (20 lines). Overall mean plant height was maximum in cluster 3 and minimum in cluster 2. Maximum and minimum overall green weight was found in cluster 1 (189.46 gm) and cluster 3 (145.58 gm). Cluster 1 showed the highest (11.86 gm) dry fibre weight whereas cluster 2 showed lowest (8.04 gm) overall dry fibre weight. Fibre recovery from green weight was highest in cluster 3. So, genotypes can be selected from these three clusters for further crossing programme.

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