Variation in ovariole number of the ovaries of female moths was detected in 87 of the 157(55.4%)bred/hybrid lines,and 11 mutant types of ovariole number were found.

• 结果发现；家蚕资源品系大范围存在雌蛾卵巢管数目变异现象。157个品系及其杂交材料中有87个发生了卵巢管数目变异现象；占55.；41%25；变异类型有11种。