胚胎期高温处理对家蚕生长发育及部分经济性状的影响

用 3 4℃、RH80 %的环境处理 2 0余个家蚕品种的己 + 2 期胚胎 ,结果表明 :高温处理对某些品种的幼虫经过、幼虫体重、全茧量、茧层量等有明显影响 ,对健康性、茧层率无明显影响 ,对丝质无实质影响 ;高温处理对家蚕生长发育和经济性状的影响纯种间存在差异 ,杂交种受影响比纯种小。因此认为 ,高温处理对家蚕生长发育、经济性状的影响不会成为伴性温敏基因和雄蚕品种利用的限制因素 ,部分不良影响可以通过常规育种手段加以解决

The Influence of High Temperature During Embryonic Period on Growth and Development and Some Economic Characters of Silkworm Bombyx mori L

We have treated more than 20 silkworm races with 34℃ and RH80％ during the embryo stage of post end reversion．The results of test indicated that the larval period of some race was changed,most of larval weight became lighter,whole cocoon weight,cocoon shell weight and output clearly decreased．But it had no apparent effect on healthiness,silk quality and ratio of cocoon shell．And the degree of influence on growth and development and economic characters caused by high temperature is different between pure races．Compared with pure race,the influence on hybrid is less．We think that the influence of high temperature on growth and development and economic characters of silkworm is not the restrictive factor for use of sex-linked temperature sensitive gene and male silkworm variety,some ill influence can be resolved through routine breeding．