巻号一覧
74 巻 (2005)
- 2+3 号 p. 47-
- 1 号 p. 1-
前身誌
最新号
選択された号の論文の6件中1～6を表示しています
- |<
- <
- 1
- >
- >|
報文
-
栗岡 富士江, 塩崎 英樹2005 年 74 巻 2+3 号 p. 47-51
発行日: 2005年
公開日: 2006/11/13
ジャーナル フリー綿布の性能向上を目的として，セリシン・クエン酸混合溶液1.5，3，4.5，6％で綿布にセリシン固着加工を行った。加工綿布は湿式洗濯処理を20回繰り返し，固着セリシンの洗濯耐久性および加工綿布の洗濯前後の風合い変化について検討した。
その結果，セリシン加工綿布は洗濯回数が増えるほどセリシンが脱落したが，洗濯処理20回後も綿布にセリシンが残留し，高濃度処理布ほどセリシン残存量が多いことが確認された。また，綿布は加工によって風合い値のコシ，ハリ，キシミが増加し，シナヤカサが減少した。この傾向は処理濃度が高くなるほど顕著であった。洗濯処理20回後はいずれの加工綿布もコシ，ハリ，キシミは減少し，シナヤカサは増加したが，加工綿布の中で3％処理布は加工および洗濯処理20回後の風合い変化が小さかった。
抄録全体を表示PDF形式でダウンロード (762K) -
清水 久仁光, 廣川 昌彦, 立松 謙一郎, 小瀬川 英一2005 年 74 巻 2+3 号 p. 53-57
発行日: 2005年
公開日: 2006/11/13
ジャーナル フリーIn 1995, a new brown egg mutant was discovered in one race of the domestic silkworm, Bombyx mori, which has been held at the National Institute of Agrobiological Science. The mutant resources were maintained in recessive genes and showed typical maternal inheritance which had been reported in the mutant, b-1. Complementation tests revealed that the mutant gene shared an allele of the well-described brown egg mutant, b-2. Hence, the newly discovered gene was named b-2s , and mapped on the 6th chromosome (29.1 cM). On the other hand, in the reciprocal cross experiment between b-2s and b-2na, F1 and F2 moths produced only brown eggs, while F3 moths produced normal egg color batches separated from the mutant batches. The segregation of the normal eggs may be derived from a recombination of the genes. The recombination rate of between b-2s and b-2na was calculated at approximately 1.85 cM.
抄録全体を表示PDF形式でダウンロード (448K) -
永田 昌男, 大和 知永, 青木 不学2005 年 74 巻 2+3 号 p. 59-63
発行日: 2005年
公開日: 2006/11/13
ジャーナル フリーAn unknown organ was not natural detected in the 2nd abdominal segment of the silkworm larva. We examined this organ anatomically. The organ was round and located near the dorsal vessel and under a crescent mark of the integument. The organ in the male larva contained cells like spermatocytes and bundles of sperms. An oviduct-like tube, on the other hand, was included in the female organ. From these results, we concluded that the organ was a gonad that developed abnormally in the 2nd abdominal segment.
抄録全体を表示PDF形式でダウンロード (5568K) -
村上 理都子, 小山 朗夫, 白田 昭2005 年 74 巻 2+3 号 p. 65-72
発行日: 2005年
公開日: 2006/11/13
ジャーナル フリーPDF形式でダウンロード (3595K) -
清水 久仁光, 廣川 昌彦, 立松 謙一郎, 小瀬川 英一2005 年 74 巻 2+3 号 p. 73-79
発行日: 2005年
公開日: 2006/11/13
ジャーナル フリーWe investigated the effects of day length on the diapause ratio in embryos and larvae of the tropical multivoltine silkworm, Bombyx mori. Our results show that the incubation of eggs at a high temperature (28°C) under a photoperiod of 24L : 0D effectively induced diapause-egg production. We also observed that the incubation affected the hatchability of eggs. Finally, we discovered that low hatchability and diapause ratios were improved by exposing eggs to more moderate temperatures (25°C) under a photoperiod of 16L : 8D for one day before hatching.
抄録全体を表示PDF形式でダウンロード (753K)
テクニカルレポート
-
大沼 昭夫2005 年 74 巻 2+3 号 p. 81-87
発行日: 2005年
公開日: 2006/11/13
ジャーナル フリーA balanced sex-limited lethal (BL) strain was bred from the sex-limited Moricaud for the purpose of setting up a male-raising system, since males excel against females in the silk manufacturing efficiency and cocoon quality. This BL strain was backcrossed using the W7 strain (Chinese race) with good economical characters, reconstructed to recover the balanced lethality and selected for the economical characters comparable to the level of W7 strain. Then, males of thus improved BL strain were crossed with females of a Japanese race to prepare a hybrid, which was committed to the rearing test in a farmhouse. The hybrid exhibited, in the summer rearing season of 2004, remarkable records in terms of cocoon shell percentage, cocoon shell weight, cocoon filament length and so on. On the basis of these results, we concluded that a new BL strain was established and named this “PLATINA BOY.”
抄録全体を表示PDF形式でダウンロード (1217K)
- |<
- <
- 1
- >
- >|