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毛决明种子发芽力在花后 39d后逐渐上升 ,发芽率和发芽指数在花后 5 3d,活力指数在花后 6 7d达最大值 ,而后有所降低。花后 39～ 74 d,含水量逐渐下降 ,但下降速度不等。花后 6 7d种子干重达到最大值 ,花后 6 7～74 d含水量显著下降 ,种子存在明显的成熟脱水阶段。种子的脱水耐性在花后 4 6～ 6 0 d逐渐增强 ,6 0 d达到最大值 ,后有所下降。轻微脱水可显著提高花后 4 6 d和 6 7d的种子的发芽率。花后 6 0～ 6 7d的种子能忍耐 10 %含水量 ,毛决明种子极可能是正常性种子
After germination, the germination power of S. miltiorrhiza increased gradually 39 days after anthesis, and the germination rate and germination index reached the maximum value on the 6th day after anthesis on the 5th day after anthesis, and then decreased. After flowering 39-74 d, water content decreased gradually, but the rate of decline varied. The dry weight of seeds reached the maximum at 67 days after anthesis, and the water content decreased significantly from 67 days to 74 days after anthesis, and the seed had obvious mature dehydration stage. The desiccation tolerance of seeds increased gradually from 4-6 days to 60 days after anthesis, reached the maximum on 60 days and then decreased. Slight dehydration can significantly increase the germination rate of the seeds on the 4-6th and the 67th days after flowering. Seeds after 60 ~ 67 days after anthesis could tolerate 10% water content.