蚕类DNA诱导遗传性变异的研究——家蚕DNA对蓖麻蚕的诱变作用

本文从不同品系的家蚕中提取DNA或DNA蛋白,并分别注入蓖麻蚕幼虫体内,结果后代发生了幼虫皮斑性状的改变,出现了两种变异个体:一种花蚕,一种花白蚕。后者的幼虫5龄以前有皮斑,5龄期皮斑消失呈白蚕。经过20代(F₂₀)的培育花蚕已成为稳定的转化系。杂交的遗传学分析表明,通过外源DNA作用引起的变异性状的遗传不符合正常的遗传规律:将花蚕(转化体)与白蚕(受体)交配的子一代(F₁)幼虫呈现花白蚕的特征。     

STUDY ON HEREDlTARY VARIATIONS INDUCED BY SILKWORM DNA——MUTAGENECITY OF ATTACUS CYNTHIA RICINI BY B.MORI DNA

We have briefly introduced the preliminary results of the DNA-induced hereditary varia-tion in silkworms. In this paper a comparison of mutagenesis of Attacus cynthia riciniby DNA of different sources is made. The characters of the transferred individuals and thehereditary characteristies are also described.