EVALUATION OF BIVOLTINE SILKWORM GENETIC RESOURCES THROUGH CLUSTER ANALYSIS AND IDENTIFICATION OF BETTER PERFORMING BIVOLTINE ACCESSIONS

M. MAHESWARI¹*, G. LOKESH², G.N. MURTHY³, S. SEKAR⁴, D.S. SOMAPRAKASH⁵, R.K. MISHRA^6
1Central Sericultural Germplasm Resources Centre (CSGRC), Central Silk Board, Hosur, 635109, Bengaluru, Karnataka, India
²Central Sericultural Germplasm Resources Centre (CSGRC), Central Silk Board, Hosur, 635109, Bengaluru, Karnataka, India
³Central Sericultural Germplasm Resources Centre (CSGRC), Central Silk Board, Hosur, 635109, Bengaluru, Karnataka, India
⁴Central Sericultural Germplasm Resources Centre (CSGRC), Central Silk Board, Hosur, 635109, Bengaluru, Karnataka, India
⁵Central Sericultural Germplasm Resources Centre (CSGRC), Central Silk Board, Hosur, 635109, Bengaluru, Karnataka, India
⁶Central Sericultural Germplasm Resources Centre (CSGRC), Central Silk Board, Hosur, 635109, Bengaluru, Karnataka, India
* Corresponding Author : mahi_munusamy@rediffmail.com

Received : 02-05-2019     Accepted : 26-05-2019     Published : 30-05-2019
Volume : 11     Issue : 5       Pages : 601 - 603
Genetics 11.5 (2019):601-603

Keywords : Silkworm germplasm resources, Bivoltine, Conservation, Cluster analysis
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to Central Sericultural Germplasm Resources Centre (CSGRC), Central Silk Board, Hosur, 635109, Bengaluru, Karnataka
Author Contribution : All authors equally contributed

The evaluation of germplasm is essential for its effective utilization in the silkworm crop improvement and sustainable maintenance of silkworm genetic resources. In the present study, bivoltine silkworm genetic resources comprising of 369 bivoltine silkworm genotypes (209 indigenous and 160 exotic) were evaluated on 11 important quantitative & qualitative parameters. Based on the performance, silkworm genotypes have been grouped into 20 clusters by Ward’s minimum variance cluster analysis. High variability was observed in the different genotypes for different parameters studied ranging 3.83 to 14.64% showing highly heterozygous in nature. Further the accessions are assigned the ranking based on the evaluation index of the performance in particular trait.

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