An experiment was conducted to examine the magnitude of genetic diversity and characters contributing to genetic diversity among 81 tossa jute genotypes. Cluster analysis based on Euclidean squared distances and wardâ€™s method, the genotypes were grouped into ten distinct clusters. Analysis reveals that stick weight contributes maximum to the phenotypic diversity (65.52%) followed by green weight (13.64%) and fibre yield (10.10%). Among the clusters Cluster IX recorded highest mean fibre yield (19.91g) followed by Cluster VII (18.94g) and these clusters also recorded high mean values for plant height, basal diameter, green weight and stick weight. The highest inter- cluster distance was 186.80 (between clusters II and X) followed by 161.26 (between clusters IV and X), indicating the wide genetic diversity among these clusters. The highest intra-cluster distance was observed in cluster II (20.34) and the lowest in cluster X (3.17). The average inter-cluster distances were higher than the average intra-cluster distances, which shows the presence of wide genetic diversity among the genotypes of different clusters than those of the same cluster. The first two principal components, whose Eigen values are greater than one, accounted for 74% of the total variation among the five characters. The information obtained from diversity analysis is useful in planning further breeding programme for tossa jute improvement.
Cluster analysis, Genetic diversity, Principal component analysis, Tossa jute
Akter, N., Islam, M.M., Yahiya, A.S.M. and Newaz, M.A. (2010). Genetic divergence for fibre and seed characters in tossa jute (Corchorus olitorius L.). Journal of Experimental Bioscience, 1 (1): 7-12.
Benor, S., Demissew, S., Hammer, K. and Blattner, F.R. (2012). Genetic diversity and relationships in Corchorus olitorius (Malvaceae s. l.) inferred from molecular and morphological data. Genet. Resour. Crop Evol., 59:1125â€“1146.
Chahal, G.S. and Goshal, S.S. (2002). Principals and Procedures of Plant Breeding: Biotechnology and Conventional Approaches. Narosa Publishing House, New Delhi.
Denton, O.A. and Nwangburuka, C.C. (2012). Morphological Diversity among Corchorus olitorius Accessions Based on Single Linkage Cluster Analysis and Principal Component Analysis. Jordan Journal of Biological Science,s 5(3): 191-196.
Edmonds, J.M. (1990). Herbaroum survey of African Corchorus L. species. International Board for Plant Genetic Resources, Rome.
Ghosh, R.K., Wongkaew, A., Sreewongchai, T., Nakasathien, S. and Phumichai, C. (2014). Assessment of Genetic Diversity and Population Structure in Jute (Corchorus spp.) Using Simple Sequence Repeat (SSR) and Amplified Fragment Length Polymorphism (AFLP) Markers. Kasetsart J. (Nat. Sci.), 48: 83-94.
Kar, C.S., Kundu, A., Sarkar D., Sinha, M.K., and Mahaptra, B.S. (2009). Genetic diversity in jute (Corchorus spp.) and its utilization: a review. Indian J. Agric. Sci., 79 (8): 575-86.
Kundu, A., Topdar, N., Sarkar, D., Sinha, M.K., Ghosh, A., Banerjee, S., Das, M., Balyan, H.S., Mahapatra, B.S. and Gupta, P.K. (2013). Origins of white (Corchorus capsularis L.) and dark (C. olitorius L.) jute: a reevaluation based on nuclear and chloroplast microsatellites. J. Plant Biochem. Biotechnol., 22: 372â€“381.
Mahapatra, A.K. and Saha, A. (2008) Genetic resources of jute and allied fibre crops., Jute and allied fibre updates, Central Research Institute for Jute and Allied Fibres, Kolkata, pp.18-37.
Rao, C.R. (1952). Advanced statistical methods in biometrical Research. John Wiley and sons, New York. pp 357-369.
Rowell, R.M. and Stout, H.P. (2007). Jute and kenaf. Handbook of fibre chemistry, CRC Press, Boca Raton, pp 405â€“452.
Roy, S.K., Das, B., Kale, V.A. and Haque, S. (2011). Genetic divergence study for yield and quality traits in tossa jute (Corchorus olitorius). Journal of Crop and Weed, 7(1): 130-132.
Singh, R.K. and Choudhary, B.D. (1979). Biometrical methods in quantitative genetic analysis. Kalyani Publishers, New Delhi, India. Pp 211-215.
Sinha, M.K., Kar, C.S., Ramasubramanian, T., Kundu, A. and Mahapatra, B.S. (2011). Corchorus. Wild crop relatives: genomic and breeding resources, industrial crops.Springer, Berlin, pp 29â€“61.
State wise production of raw jute, Retrieved on12-02-2015 www.jutecomm.gov.in/ production.htm
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