家蚕品种资源主要经济性状特点的研究

Distribution Law Studies of Major Economic Characteristics of Silkworm ( Bombyx mori ) Variety Resoures

对 3 3 4个家蚕品种的 1 6项经济性状进行了变异规律、分布规律和概率分级研究 ,并对不同地理品系的特性进行了评价。 5龄经过、全茧量、茧层量、茧丝长、解舒丝长、洁净、纤度、一粒茧丝量、出丝率、5龄一日茧丝量等 1 0个性状服从正态分布 ;得出服从正态分布的性状的 5级和 3级分级点 ;其余不符合正态分布的性状 ,统计分析时需进行适当的转换。

Variation,distribution and probability grading studies of 16 economic characteristics of 334 silkworm races were analysed.Characters of each geographic strains was evaluated.The results showed that the distribution of 10 economic characteristics which including the duration of the 5th instar,cocoon weight,cocoon shell weight,cocoon filament length,length of non broken cocoon filament,neatness,size,weight of per cocoon filament,raw silk percentage of cocoon and daily cocoon filament weight at the 5th instar obey normal distribution.Five and three distributing points of those economic characteristics were got.The other 6 economic characters do not obey normal distribution,they should be proper converted when being statistical analysed.