摘要
对209个家蚕保育品种的茧丝长进行调查,平均丝长840m,最长1273m,最短344m。各类品种中以中系二化品种最长,日系二化次之,多化最短。解舒率的调查结果是,平均值79.4%,最高100.O%,最低41.5%,90.0%以上的品种31个。解舒率多化品种和日本系统品种较好,中系和欧系品种较差。平均解舒丝长663m,最长1043m,最短274m。调查218个品种的净度,平均93.9分,最高99.2分,最低76.7分,98分以上的品种18个,多化品种净度最好,二化品种次之,一化品种最差。调查了200个品种的茧丝量,平均0.233克,最高0.354克,最低0.071克。以日系一化品种最高,二化品种次之,多化品种最低。
preserved silkworm varieties were investigated on their cocoon
filament proper-ties。The results showed that,average filament length was 840
meters(longest:1273,shortest:344).Filament length of bivoltine varieties of Chinese strain
ranked the firstfollowed by that of bivoltine varieties of Japanese strain and polyvoltine
varieties.Aver-age reelability percentage was 79.4%(highest:100.0%,lowest:41.5%).There were
31varieties with a reelability percentage over 90.0%.Polyvoltine varieties and varieties
ofJapanese strain had better reelability than those of Chinese and European strains.Aver-age
non broken filament length was 663 meters(longest:1043,shortest:274).Averageneatness of
218 varieties surveyed was 93.9 points(highest:99.2,lowest:76.7).Therewere 18 varieties with a
neatness over 98.0 points.The neatness of polyvoltine varietieswas the best,whereas that of
bivoltine varieties was better than univoltine ones .Averagecocoon filament weight of 200
varieties surveyed was 0.223gram/cocoon(highest:0.354,lowest:0.071).It was the highest in
univoltine varieties of Japanese strain fol-lowed by bivoltine varieties.It was the lowest in
polyvoltine varieties。
出处
《蚕业科学》
CAS
CSCD
1994年第4期206-213,共8页
ACTA SERICOLOGICA SINICA
关键词
家蚕
品种
品种资源
茧丝性状
Bombyx mori Variety resource Cocoon filament property