灰黑蛾基础蚕品种的育成及其杂交种生产性能测定

Breeding of grey-black moth basic silkworm racesand the productive performance of hybrid

为了在蚕雌雄蛾交配生产一代杂交种时,能根据蛾色不同识别是否瀛华系杂交,并及时淘汰纯对,使蚕种杂交率达到100%,将经济性状较差,蚕蛾灰黑色的蚕品种8216的成虫暗化型基因mln(18-35 3)导入经济性状优良的实用家蚕品种782和882中,育成了成虫全身灰黑色的龄期经过短、健康性好的蚕品种952和茧层厚、丝量多、丝质优的蚕品种956。对其一代杂交组合952·956×781·881(灰黑蛾×白蛾)进行生产性能测定表明:其健康性好、产茧量高、茧丝质优,综合经济性状达到或超过实用品种水平。

In order to distinguish Chinese race and Japanese race in producing hybrid through moth color,the melanism gene mln(18-35.3)of silkworm race 8216 with poor economic characters was transferred into white moth silkworm race 782 and 882 and bred grey-black moth silkwmorn race 952 and 956,which had good economic characters.The hybridized combination 952·956×781·881(grey-black moth×white moth)was reared in laboratory in order to appraise the productive performance of hybrid,the results showed that the hybridized combination was strong and healthly,easy to rear,high cocoon production and excellent silk quality.