Breeding of Silkworm Variety "Chuancan No.24" with Strong Vitality for Summer-Autumn Rearing
Breeding of Silkworm Variety "Chuancan No.24" with Strong Vitality for Summer-Autumn Rearing作者机构:Sedcultural Research Institute Sichuan Academy of Agricultural Sciences Nanchong 637000 China
出 版 物:《Animal Husbandry and Feed Science》 (动物与饲料科学(英文版))
年 卷 期:2010年第2卷第8期
页 面:6-8,11页
学科分类:090801[农学-水产养殖] 0710[理学-生物学] 0908[农学-水产] 07[理学] 0905[农学-畜牧学] 09[农学] 071007[理学-遗传学] 090501[农学-动物遗传育种与繁殖]
主 题:Bombyx mori Variety for summer-Autumn rearing Strong vitality Chuancan No. 24
摘 要:[ Objective] The aim was to introduce the breeding process of natural colorful cocoon silkworm variety, Chuancan No. 24. [ Method] By cross breeding and pedigree separation, the silkworm variety, Chuancan No. 24, with double sex-limited markings and strong vitality and for sum- mer-Autumn rearing was bred. [ Result] The results of laboratory identification and countryside test in Sichuan Province indicated that the Chuancan No. 24 was strong and could be reared easily. They had uniform development and excellent quality of cocoon and silk. In addition, their sexes could be identified by larval body color and markings. The main indexes are as follows: cocoon yield per 10 003 fourth instar larvae, 19.66 kg; filament length, 1 241.29 m; length of non-broken filament, 941.99 mm; reelability, 75.87% ; raw silk ratio of fresh cocoon, 17.07% ; and neatness, 94.03 points. The main economic features of new variety were better than those of the control. [ Conclusion] The Chuancan No. 24 has been approved by the Sichuan Silkworm Evaluation Commission, and it is suitable to rear this new variety in some regions of the Yangtze River drainage basin, such as Sichuan Province and Chongqing.