光照对932、7532蚕品种化性的调控试验

本试验通过对中系品种932和日系品种7532在大蚕期高温饲养环境中进行24h长光照感光处理试验，了解长光照对化性的调控作用。结果表明：日系品种7532的化性较稳定，对长光照处理不敏感。但长光照对中系品种932的化性影响很大，易趋于多化而诱发生种，以隔代长光照处理的影响最大，生种率最高达97．64％；同时，932品种受长光照作用所产的不滞育卵，在自然光照下正常饲养，化性得到恢复和稳定，生种率降至正常水平，可利用这一特性筛选出适合作为转基因受体的新品系。大蚕期连续多代长光照选育对932的化性有稳定的趋向，选择黑种继代，生种率显著下降，有利于筛选出适合蚕业生产所需的产滞育卵稳定的新品系。

Control test of light on voltinism of silkworm variety 932 and 7532

24h light processing trial was conducted to compare the Chinese variety 932 and Japanese variety 7532 in the high-temperature feeding environment so that the control function of long-time light on voltinism could be understood. The results showed that the Japanese variety 7532, non-sensitive to light, had more stable voltinism, while voltinism of the Chinese variety 932 was extremely impacted by long-time light, and its polyvoltine tended to trigger non-hibernating eggs （Non-hibernating rate： 97.64%）.Meanwhile non-diapause eggs produced by 932 under long-time light could have stable voltinism as long as it＇s fed in natural light, and its non-hibernating rate was reduced to the normal level, based on which new novel lines of transgenic receptor strain could be screened out. At grown silkworm stage, vohinism of the Chinese variety 932 could be recovered by consecutive long-time light, and its non-hibernating rate was remarkably brought down, all of which were advantageous to select novel lines producing diapause eggs to meet the demand of silkworm production.