Effects of some extracts on growth characters of mulberry silkworm"Bombyx Mori L." [electronic resource].

Includes reference.

Two hybrids of silkworms, imported from Bulgaria, and local hybrid were used during the work. Six alcoholic extracts (Moringa, Rosemary, Garlic, Cestrum durant "Bostachia", mulberry silkworm, and silk glands, and four aqueous extracts (Moringa, Rosemary, Garlic, and Cestrum durant, were tested on imported and local hybrid of silkworm. Mulberry leaves were sprayed with ( 1%) of these extracts and offered to 4th and 5th instar larvae. The following growth characters were detected and calculated: initial, final average and range of 5th instar weight, growth index, silk glands weight, ratio between silk glands and larval weight, pupal weight, fresh and cocoon, shell weight and cocoon shell ratio % was calculated. Using of aqueous extract of Rosemary on imported silkworms leads to an increase in cocoon shell ratio %.

Summary in Arabic.

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