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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(7): 272-280
DOI: https://doi.org/10.20546/ijcmas.2020.907.029


Evaluation of Indigenous Bivoltine Breeds of Silkworm Bombyx mori L.
Kritika Sharma* and Kamlesh Bali
Division of Sericulture, Block No. 5, FoA, SKUAST-J, Main Campus, Chatha-180009, India
*Corresponding author
Abstract:

The present investigation was carried out regarding phenotypic and biological/economic parameters of six bivoltine silkworm breeds; ND2, ND3, NSP, Udhey-1, CSR2 and JD6 of Bombyx mori L. suited for sub-tropical conditions. Observations were made on fifteen economically important traits namely; fecundity, hatching percentage, brushing percentage, weight of 10 mature larvae, larval survival percentage, cocoon yield per 10,000 larvae (by weight and by number), good cocoon, pupation, single cocoon weight, single shell weight, shell ratio, total filament length, non breakable filament length and filament size. The data was analyzed using Multiple Trait Evaluation index (E.I.) method. The perusal of the data reveals that the average E.I. value for egg characters ranged between 43.46(ND2) to 60.80(ND3). The average E.I value for larval traits varied in the range of 41.95(JD6) to 56.10(Udhey-1). For the cocoon paramaters, the average E.I. value was recorded from 46.81(JD6) to 54.00(Udhey-1).The average E.I. values for post cocoon parameters ranged between 43.71(NSP) to 56.53(ND2). On the basis of pooled E.I. values, Udhey-1(54.59),CSR2 (51.56),ND3(50.79) and ND2(50.20) surpassed the E.I. bench mark value of >50 and are considered suitable breeds for getting more economic returns from silkworm rearing.


Keywords: bivoltine, Bombyx mori L, breeds, Evaluation Index (E.I.)
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How to cite this article:

Kritika Sharma and Kamlesh Bali. 2020. Evaluation of Indigenous Bivoltine Breeds of Silkworm Bombyx mori L..Int.J.Curr.Microbiol.App.Sci. 9(7): 272-280. doi: https://doi.org/10.20546/ijcmas.2020.907.029