摘要
选用现行夏秋用蚕品种薪杭×白云和丰一×５４Ａ的４个原种，选配四元杂交种新丰×青云．通过实验室一代杂交种比较试验，蚕种场试繁和一代杂交种的农村试养，发现该四元杂交种的杂交原种具有强健好养、产卵量多、克蚁单产比现行品种提高３０％以上的优点．一代杂交种具有体质强健、抗高温和抗氟性较强、产量稳定等优点。
Tetra hybrid variety Xin·Feng×Qin·Yun was bred by commercial summer autumn parent race of Xinhang, Baiyun, Feng1 and 54A. The tetra hybrid eggs production in egg producing farms and comparable experiments in lab and trial rearing showed that the F1 hybrid for crossing had good healthiness and laid more eggs . Amount of eggs produced per gram of newly hatched larva was 30% more than present summer autumn race. The tetra hybrid had high temperature resistance ,high resistance for fluorine and high stability of cocoon yield. All the economical character was similar to or better than the present commercial variety Xinhang×Keming .
基金
浙江省科委"八五"攻关课题
关键词
蚕
四元杂交种
选配
silkworm
tetra hybrid
breeding
