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Introduction to the Characteristics of the Shaan Silkworm No. 2 Silkworm Breed

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Breeding unit: Shaanxi Sericulture Research Institute. Approval status: approved by the Shaanxi Provincial Crop Variety Approval Committee in 1981, and recognized by the National Crop Variety Approval Committee in 1994. Variety registration number: GSI1003-l993. Variety source: (122X Su, 5X226X Su6). Characteristics: a four-way hybrid. Strong constitution and easy to raise, high cocoon yield, and relatively good cocoon silk quality. Average neatness is gi.65 points, cocoon silk fineness

Breeding unit: Shaanxi Sericulture Research Institute.

Approval status: approved by the Shaanxi Provincial Crop Variety Approval Committee in 1981, and recognized by the National Crop Variety Approval Committee in 1994.

Variety registration number: GSI1003-l993.

Variety source: (122X Su, 5X226X Su6).

Characteristics: a four-way hybrid. Strong constitution and easy to raise, high cocoon yield, and relatively good cocoon silk quality. Average neatness is gi.65 points, cocoon silk fineness 2.967D, reelability rate 83%, reelable silk length 995.3 m, cocoon shell rate 25.44%.

Rearing key points: before incubation, attention should be paid to adjusting the starting embryo well; after the silkworm eggs turn blue, carry out dark protection well, and be sure to make embryo development uniform. During the young silkworm stage, leaf quality requirements are strict, and suitably mature but slightly tender leaves are preferable. Expand and even out the rearing space in time, and place on fresh mulberry leaves at the proper time. From the 3rd to the 7th day of the 5th instar, pay attention to feeding on good mulberry leaves to satiety, strengthen rearing management, and mount on clusters in batches.

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