麻花头提取物C27甾体皂苷对家蚕生长影响

Effect of C27 Saponins from Serratula L. on Bombyx mori's Growth and Metamorphosis Development

以麻花头提取物C27甾体皂苷1000mg/L,500mg/L,250mg/L3个浓度,从五龄起蚕开始添食,直至上蔟。250mg/LC27添食组最早五龄第四天开始出现熟蚕,第七天C27处理组全部出现熟蚕,对照组则在第八天才开始出现熟蚕;250mg/L、500mg/L和1000mg/L添加组在第十天存活率分别为70%、73%和50%,而对照组则为92.9%;平均茧层重分别为250mg/L组0.2951g,500mg/L组0.2364g,1000mg/L组0.2073g,对照组0.4164。试验结果表明C27甾体皂苷可促进家蚕提前上蔟,有类蜕皮激素作用,但同时随着添食浓度增加,也影响供试家蚕的存活率和茧层量。

In this research, 1000 mg/L, 500 mg/L, 250 mg/L C27 saponins from Serratula L. were added to the di et of Bombyx mori from the 1st day to last day of 5th instar. On the 4th day,early maturity was observed firstly in group 250 mg/L C27 saponins added. On the 7th day, all silkworms matured in groups C27 saponins added. The survival rates of each group on the 10th day were 70% in 250 mg/L group,73% in 500 mg/L group,50% in 1000mg/L, and 92.9% in control,respectively. The average cocoon weight were 0. 2951g in 250 mg/L group, 0. 2364 g in 500mg/L group,0. 2073 g in 1000 mg/L group,0. 4164 g in control,respectively. These results imply the effect of C27 saponins is similar to ecdysone, while the more C27 saponin added, the survival and cocoon weight decreased.