極細繊度蚕品種「はくぎん」の育成

DOI 日本農学文献記事索引 Web Site 被引用文献8件 参考文献11件

書誌事項

タイトル別名
  • Breeding of the silkworm race, Hakugin, with superthin cocoon filament.
  • ゴクボソ センド サン ヒンシュ ハクギン ノ イクセイ

この論文をさがす

抄録

The project was executed to breed a silkworm race with superthin cocoon filament. After improvement the size of cocoon filament and the other economical characters for several generations, the two strains were established as the practical race, C514 and C515, having superthin cocoon filament about 1.8 and 1.5 denier in size, respectively. The C514 was bred by cross-breeding from the offspring of crossing among TC14, CS31 and C511 strains. This race has polyphagous, and is also characterized by sex-limited larval marking (marked: female, plain: male). The C515 was bred by pure line selection using C25 strain as material. In both the races, C514 and C515, the kinship is markedly close to C25 strain, and the inbreeding coefficients of C25 are 47% and 100%, respectively. The cross, C514×C515, was authorized by the Minister of Agriculture, Forestry and Fisheries in 1998, as the new commercial race named “Hakugin”. Although this hybrid has the special characteristic of superthin filament about 1.65 denier in size, the other quantitative characters are inferior to the previous commercial race which produce the thin filament about 2.2 denier in size. The cocoon color is white, and the shape is oval with ordinary wrinkles. The deviation of filament size in a cocoon is remarkably small. We hope this superthin cocoon filament will be widely used as a new silk materials.

収録刊行物

被引用文献 (8)*注記

もっと見る

参考文献 (11)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ