朱顶红开花过程研究

Hippeastrum vittatum is Amaryllidaceae genus Hippeastrum perennial herb with beautiful flower and bright color. The experiment observed the dynamic changes of pistil and stamen during the flowering , and determined the effect of humidity on anther dehiscence. The experimental result showed that the stamen of Hippeastrum vittatum matured earlierly than the pistil during the flowering. The stamen and pistil's length and relative position were changed. In order to avoid the self-pollination and ensure the cross-pollination, it caused the time difference by dichogamous phenomenon and caused the space difference by relative dislocation, therefore, the pollen didn't fall into the same flower stigma. The six anthers dehisced one by one can effectively extend the time of releasing pollen and improve the rate of pollination. The anther was versatile anther and they dehisced in verticaland，and the anther wall shortened from 17 mm to 5 mm when it began dehiscence,which taking 9 hours. In the same flower, the inner anther wall shortened faster than the outer's about 2 hours. The high humidity（90±5 %RH）will delay the time of anther dehiscence, and its average duration of anther wall shortened were longer than the low humidity，s（75±5 %RH）about 7 hours. The study aimed to supply basic theory for plant pollination biology.