Susceptibility Of Different Silkworm Breeds To  Nuclear Polyhedrosis And Bacterial Flacherie  Under Natural Conditions

Shabir A Bhat; S Nooruddin; N A Ganai; K A Sahaf; M A Malik

doi:10.48165/

Authors

Shabir A Bhat Temperate Sericulture Research Institute, Mirgund (Baramulla), SK University of Agricultural Sciences and Technology of Kashmir, Post Box No. 674, GPO Srinagar – 190 001, Jammu & Kashmir (India)
S Nooruddin Temperate Sericulture Research Institute, Mirgund (Baramulla), SK University of Agricultural Sciences and Technology of Kashmir, Post Box No. 674, GPO Srinagar – 190 001, Jammu & Kashmir (India)
N A Ganai Temperate Sericulture Research Institute, Mirgund (Baramulla), SK University of Agricultural Sciences and Technology of Kashmir, Post Box No. 674, GPO Srinagar – 190 001, Jammu & Kashmir (India)
K A Sahaf Temperate Sericulture Research Institute, Mirgund (Baramulla), SK University of Agricultural Sciences and Technology of Kashmir, Post Box No. 674, GPO Srinagar – 190 001, Jammu & Kashmir (India)
M A Malik Temperate Sericulture Research Institute, Mirgund (Baramulla), SK University of Agricultural Sciences and Technology of Kashmir, Post Box No. 674, GPO Srinagar – 190 001, Jammu & Kashmir (India)

DOI:

https://doi.org/10.48165/

Keywords:

Breeding, Bombyx mori nuclear polyhedrosis, flacherie, silkworm, susceptibility

Abstract

Silkworm, Bombyx mori (L.), is susceptible to several diseases and no breed so far is reported to be immune. In the present investigations, 41 silkworm breeds of varied geographical origin were evaluated for their susceptibility to Bombyx mori nuclear polyhedrosis (BmNPV) and bacterial flacherie under natural conditions. Significant difference was observed in larval and pupal mortality due to both nuclear polyhedrosis and bacterial flacherie. The highest larval mortality (9.29%) was observed in ‘M57’ due to nuclear polyhedrosis and least (0.77%) in ‘NB4D2’ and ‘SI(P)’. The larval mortality due to flacherie ranged from 0.67 to 7.22%. A significant variation was observed in pupation rate and highest pupation was noticed in ‘Jam10’ (95.31), followed by ‘S1M’ (95.27), ‘BL1’(95.10), ‘CP1A’(94.66), ‘Pure81’, (94.56), ‘CPIB’ (94.33), ‘S1P’(94.21), ‘Chinese Farmer’ (94.19), ‘Chakwi’ (94.09) and ‘Chinese D4’(94.03) which were statistically at par with one onother.

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References

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