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An Analysis of Genetic Variation and Divergence on Silk Fibre Characteristics of Multivoltine Silkworm (Bombyx mori L.) Genotypes  

Kumaresan P. (Central Sericultural Germplasm Resources Centre)
Koundinya P. R. (Central Sericultural Germplasm Resources Centre)
Hiremath S. A. (Central Sericultural Germplasm Resources Centre)
Sinha R. K. (Central Sericultural Germplasm Resources Centre)
Publication Information
International Journal of Industrial Entomology and Biomaterials / v.14, no.1, 2007 , pp. 23-32 More about this Journal
Abstract
The nature of genetic variation and diversity among the 65 multivoltine silkworm genotypes was evaluated for 16 post cocoon characters. The components of genetic variation revealed higher PCV (60.487%) and GCV (44.56%) for evenness (variation 1) followed by cohesion (PCV=55.38%, GCV=40.36%) and non-broken filament length (PCV=32.05%, GCV=31.28%). The higher heritability ($h^2$ in broad sense) was observed for boil-off loss (95.6%) followed by non-broken filament length (95.22%). The both genotypic and phenotypic correlation indicated significant positive correlation of filament length with non-broken filament length, silk recovery, raw silk, neatness, and low neatness; and negative correlation with denier, renditta and silk waste. The principal component analysis (PCA) revealed 75.381 % of total variance from the five principal components extracted. On the basis of Mahalonobis' $D^2$ values (Ward's minimum variance), the sixty-five multivoltine silkworm genotypes were classified in to 9 clusters with substantial inter and intra cluster distances. Number of genotypes included in different clusters varied from 3 to 17. The results indicated that the optimum distance obtained in cluster VII (15.059) along with higher cluster mean values especially for filament length, non broken filament length, renditta, silk recovery, silk waste, and raw silk emphasized the utilization of these genotypes in the conventional silkworm breeding programme for improvement of multivoltine silk fibre quality. The possibility of exploiting genetic variation in post cocoon traits for efficient breeding programme is discussed.
Keywords
Bombyx mori L.; Multivoltine; Genetic variation; Divergence; Silk fibre characters;
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1 Anonymous (1972) FAO Manual on Sericulture, Vol. 3. Silk reeling, Agriculturural Services, Bulletin No.72/3
2 Etebari, K., Mirhoseini, S. Z. and L. Matindoost (2005) A study on interaspecific biodiversity of eight groups of silkworm (Bombyx mori L.) by biochemical markers. Insect. Sci. 12, 87   DOI   ScienceOn
3 Frankel, O. H. and A. H. D. Brown (1983) A critical appraisal. Proc. XV Intl. Cong. Genet. Applied Genetics, IV, 3-13
4 Govinda, R., Magadum, S. B. and J. Ashoka (1990) Variability in silk glands, cocoon and shell weight in some bivoltine single and double cross hybrids of silkworm, Bombyx mori L. Mysore J. Agric. Sci. 24, 222-224
5 Islam, R. Md., Rahman, M. Md., Dipak Kumar Paul and S. Sultana (2003) Genetic analysis of different quantitative characters in silkworm, Bombyx mori L. due to N-Nitroso-N-Ethylurea (NEU). J. Biological Sci. 3, 1148-1152   DOI
6 Jolly, M. S., Datta, R. K., Noamani, M. K. R., Iyengar, M. N. S., Nagaraj, C. S., Basavaraja, H. K., Kshamarani, G. and P. Ramamohana Rao (1989) Studies on the genetic divergence in mulberry silkworm Bombyx mori L. Sericologia 29,545-559
7 Krishnaswamy, S., Jolly, M. S. and S. S. Rao (1964) Diallel analysis of quantitative characters in multivoltine races of silkworm. Indian J. Genet. 24, 213-222
8 Kumaresan, P. and R. K. Sinha (2002) Genetic divergence in multivoltine silkworm (Bombyx mori L.) germplasm in relation to cocoon characters. Indian. J. Gen. Plant breed. 62, 183-184
9 Lin, C. Q., Chen, K. P., Wud, X., Wang, P. and Q. Yao (1995) The investigation and correlation analysis on cocoon filament size of silkworm variety resources. Canye Kexue 21, 158-162
10 Naik, S. V. and T. H. Somashekar (2003) Studies on bivoltine cocoon cooking-Part I: Effect of retting temperature and permeation treatment condition on reeling performance of Indian bivoltine hybrid cocoons. Sericologia 43, 215-225
11 Narasimharaju, R., Govindan, R., Ashoka, J. and S. G. Rayar (1990) Genetic variability for quantitative traits in silkworm B. mori. Entomon 15, 197-201
12 Warren, S. (1922) Raw silk properties: Classification of raw silk and silk throwing. Silk publishing company, 267, Fifth Avenue, New York, pp. 25-55
13 Petkov, N. and A. Yolov (1980) The problem of genotype-environment interaction in the inheritance of some characters of Bombyx mori L. II. Effect of various seasons of silkworm feeding. Genet. Plant breed. 13, 62-66
14 Kumaresan, P., Sinha, R. K., Rayaradder, F. R. and K. Thangavelu $(2003^a)$ Selection of parents from multivoltine silkworm (Bombyx mori L.) germplasm through principal component analysis. Indian J. Gen. Plant breed. 63, 189-190
15 Kumaresan, P., Mahadevamurthy, T. S., Thangavelu, K. and R. K. Sinha (2003) Further studies on the genetic divergence multivoltine silkworm (Bombyx mori L.) genotypes based on economic characters. Entomon 28, 193-198
16 Obitsu, J. (1994) JICA and Indian Sericulture. International Conference on sericulture; Souvenir, pp. 19-21
17 Kumaresan, P., Sinha, R. K. and K. Thangavelu $(2005^a)$ Phenotypic stability and $G\;{\times}\;E$ interaction in cocoon weight of multivoltine silkworm (Bombyx mori L.) genotypes. Indian J. Seric. 44, 136-138
18 Sen, S. K., Sengupta, A. K., Das, M. G. and M. S. Jolly (1976) Studies on the genetic variability, correlation, path coefficient analysis and discriminent function in Antheraea mylitta D. Indian J. Seric. 15, 9-14
19 Murakami, A. (1989) Genetic studies on tropical races of silkworm (Bombyx mori L.) with special reference to cross breeding strategy between tropical and temperate races. 2. Multivoltine silkworm strains in Japan and their origin. Japan Agric. Res. 23, 127-133
20 Narayanan, E. S., Sonwalker, T. N. and N. Nataraja (1967) Studies on variation denier throught the reelable length of bave in exotic/indigenous mulberry cocoons. Indian J. Seric. 1(2)
21 Frey, K. J., Cox, T. S., Rodgers, D. M. and P. B. Cox (1983) Increasing cereal yield with genes from wild and weedy species. Proc. XV Intl. Cong. Genet. Applied Genetics. IV, 51-68
22 Kumaresan, P., Sinha, R. K., Sahni, N. K. and S. Sekar (2000) Genetic variability and selection indices for economic quantitative traits of multivoltine mulberry silkworm (Bombyx mori L.) genotypes. Sericologia 40, 595-605
23 Rahman, M. A., Ali, M. R. and S. M. Rahman (1978) Genetic studies and production of higher yielding varieties silkworm. Proc. 3rd Bangala. Ann. Conf. pp. 82
24 Dalton, D. C. (1987) An introduction to practical animal breeding. Second Edition, English Language book Society/Collins, pp. 182
25 Krishnaswamy, S (1978) New technology of silkworm rearing. Bulletin No.2. CSR&TI, Mysore, India
26 Mukherjee, P., Mukherjee, S. and P. Kumaresan (1999) An analysis of genetic divergence in Indian multivoltine silkworm (Bombyx mori L.) germplasm. Sericologia 39, 337-347
27 Arunachalam, V., Bandyopadhyay, A., Nigam, S. N. and R. W. Gibbons (1984) Heterosis in relation to genetic divergence and specific combining ability in groundnut (Arachis hypogaea L.). Euphytica 33, 33-39   DOI
28 Jolliffe, I. T. (1973) Discarding variable in a principal component analysis: I. Reel data. Applied Statistics, London. 22, 21-31   DOI   ScienceOn
29 Rahman, M. A., Haque, T. and M. A. Salam (1984) Evolution of superior multivoltine races of silkworm Bombyx mori L. Univ. J. Zool. Rajshahi Univ., Bangaladesh. 3, 61-66
30 Akai, H. (1998) Proc. 3rd Inter. Natl. Conf. On Wild silk moth, pp. 255-259
31 Kumaresan, P., Sinha, R.K., Mohan, B. and K. Thangavelu (2004) Conservation of multivoltine silkworm (Bombyx mori L.) germplasm in India-An overview. Int. J. Indust. Entomol. 9, 1-13
32 Ooi, H., Miyahara, T. and A. Yamashita (1970) Tech. Bull. Seric. Expt. Stn. MAFF. 93, 39-49
33 Saleh, R. A. M. (1990) Studies on the variability, heritability and genetic advance in silkworm, Bombyx mori L. (Lepidoptera:Bombycidae). M.Sc. thesis, Rajshahi University, Rajshahi, Bangaladesh. pp. 108
34 Kumaresan, P., Sinha, R. K. and K. Thangavelu (2005) Perspectives in silkworm (Bombyx mori L.) bio-diversity conservation in India. In: Conference paper of the 20th congress of the International sericulture commission (Vol.1), held on 15th-18th December, 2005 at Bangalore, India. pp. 279-291
35 Chatterjee, S. N. and R. K. Datta (1992) Hierarchical clustering of 54 races and strains of the mulberry silkworm Bombyx mori: Significance of bio-chemical parameters. Theor. Appl. Genet. 85, 394-402
36 Ramamohana Rao, P. and T. Nakada (1998) Clustering of polyvoltine strains of the silkworm Bombyx mori by image processing method: Significance of cocoon size and weight variables. Indian J. Seric. 37, 33-39
37 Lewin, M. and E. Peark (1983) Handbook of fibre science and technology, Vol. IV- Fibre chemistry, published by Marcel Dekker, INC, 270, Madison avenue, New York, USA. pp. 648-693