家蚕春用品种苏、春的育成及四元杂交种苏·镇×春·光的选配  

BREEDING OF THE SPRING REARING SILKWORM VARIETIES SU (213), CHUN (628) AND THEIR QUATERNARY HYBRID SU·ZHEN × CHUN·GUANG

作　　者：王章娥[1] 

机构地区：[1]中国农业科学院蚕业研究所

出　　处：《蚕业科学》1997年第1期14-19,共6页ACTA SERICOLOGICA SINICA

摘　　要：采用杂交、回交、系统选育、活蛹缫丝等育种方法，育成了茧丝量高的蚕品种苏（213）和茧层率高、丝质优的蚕品种春（628），然后选配成四元杂交种苏·镇×春·光。经多次鉴定、农村试养、蚕种场试繁结果表明，该品种强健好养，耐氟性较强，制种性能好、茧型大而匀正，茧丝质良好，综合经济性状优良，茧层率26％，鲜毛茧出丝率20．59％，茧丝长1419m，解舒丝长1046m，净度95.87分，茧丝纤度综合均方差小。For the purpose of breeding new spring rearing varieties with excellent and high cocoon filament weight,we have sdected and raised silkworm for more than 10 years using hybridization, backcross, line selection, fresh cocoon reeling etc. and succeeded in breeding a silkworm variety Su(213) with character of high silk yield and another variety Chun(628) with characters of high cocoon shell ratio and excellent silk quality, and then their quaternary hybrid Su. Zhen×Chun· Guang was prepared according to the principle of hybridization. Based on the identification results in laboratory and countryside, the results obtained by the united identification of national units tackling key problem through the eighth five-year-plan period and the national mulberry and silkworm apprising committee, and the results obtained from the silkworm egg producing stations, It is understood that: Silkworms of the new varitiey are strong and healthy,strongly resistant to fluoride and have satisfactory property for seed production. Itmakes big cocoons,has excellent cocoon and silk quality. Its comprehensive economical characters are good. Its cocoon shell ratio is 26%, raw silk ratio of fresh cocoon is 20. 59%, cocoon filament length is 1419m, non - breaking filament length is 1046m,neatness is 95. 87 points. It has small comprehensive mean square error of silk filament size (0. 70dtex ).

关 键 词：家蚕 春用品种 育种 

分 类 号：S882[农业科学—特种经济动物饲养]