ISSN (0970-2083)

Research Article Open Access

GROWTH AND DEVELOPMENT OF SILK WORM (BOMBYX MORI L.) ON MULBERRY LEAVES

Abstract

The studies on Growth and development of Bombyx mori L. on Mulberry leaves viz., V-1, S-1635 and M- 5, for head capsule width, body length, body width and body weight, larval weight, Single cocoon weight, shell percentage, Yield and Cocoon filament length was undertaken during 2009-2010. The larval growth of silkworm was completely by passing through five instars each, when fed on leaves of mulberry varieties viz., V-1, S-1635 and M-5, the larval duration silkworm varied from 25.02- 25.26 days on V-1, S-1635, while it ranges from 27.04 days for M-5 mulberry variety. The larval head capsule width of silkworm was found superior to 0.61 mm on S-1635 followed by V-1 having 0.62 mm. V-1 mulberry variety fed then body length x breadth of observed was 5.65 x 1.93 to 39.0 x 9.6 mm. The body weight of silkworm B.mori L. was found to be 43.45 to 873.7 mg for I to V instars when fed on V-1 Mulberry variety. Progression factors of head capsule width, body length, body width and body weight of silkworm on, V-1 was observed to be 1.54 to 2.23 respectively. Variety V-1 was observed significantly superior among tested varieties in larval weight (50.17), Single cocoon weight (0.39 g), shell percentage (19.93 %), Yield (18.70 kg) and Cocoon filament length (810.00 m).

P.A. BOTHIKAR, S.S. JADHAV AND Y.A. SHINDE

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