以万寿菊的种子为试验材料，用10、20、50、100、150、200 mmol/L的蔗糖溶液和10、50、200 mmol/L的山梨醇溶液对万寿菊种子进行浸种处理，结果表明，10～50 mmol/L的蔗糖溶液可显著提高万寿菊种子的发芽率，50～100 mmol/L的蔗糖溶液延缓万寿菊种子的萌发进程，150、200 mmol/L的蔗糖溶液阻碍万寿菊种子萌发；10、50、200 mmol/L的山梨醇溶液均抑制万寿菊种子萌发，随着山梨醇浓度增大，其抑制作用越强。通过与同浓度的山梨醇对比可知，不同浓度的蔗糖溶液对万寿菊种子萌发进程影响不同，且不完全由渗透压的变化引起。

Marigold seeds used as test materials were soaked in 10， 20， 50， 100， 150， 200 mmol/L sucrose solution and 10， 50， 200 mmol/L sorbitol solution. The results showed that 10～50 mmol/L sucrose significantly increased the germination rate of marigold seed， 50～100 mmol/L sucrose delayed the germination process of marigold seed， 150，200 mmol/L sucrose blocked marigold seed germination； 10， 50 mmol/L sorbitol solution innibited the germination of marigold seeds with the increase of the concentration of sorbitol， the inhibitory effect was stronger. By comparing with the same concentration of sorbitol，it can be seen that different concentrations of sucrose have different effects on the germination process of marigold seeds， and are not completely caused by changes in osmotic pressure.

S681.9