家蚕夏秋用品种8212、限回的育成及皖夏二号的选配

Breeding of the Silkworm Races 8212, Xianhui and the Hybrid, Wanxia No.2 Development

采用杂交、回交、抗病性选拔等方法 ,育成抗逆性强的品种 82 12、限回 ,与引进中系品种 5 0 1(苏花改 )、5 0 2(丰一改 )组配成“皖夏二号”四元杂交种。经安徽省桑蚕品种审定委员会审定 ,该品种强健好养 ,发育齐一 ,茧形匀整 ,茧丝长 110 7m ,解舒率 83 31% ,农村饲养产量高 ,蚕种繁育系数高 ,综合经济性状优良。

Silkworm resistant races , 8212 and Xianhui were bred by crossing,back crossing and resistant selection etc Both of the two races then were recombined to the introduced Chinese races , 501 , 502 respectively to develop a multi way hybrid, Wanxia No 2.This new multi way hybrid can be reared easily , larvae grew and developed uniformly.Cocoons were in good order.Cocoon filament reached 1 107 m .Reelability ratio was 83 31%.Cocoon and eggs yield were higher and quality evaluated by Anhui Province Special Authority.