The results showed that the fluorochrome of cocoon comes from middle silkgland, the fiuorochrome of middle silkgland comes from flood, and that the silkgland has no selective absorpting function.

• 结果表明：茧层的荧光色素来源于中部丝腺,中部丝腺的荧光色素来源于血液,丝腺对荧光色素没有选择吸收功能;