Abstract:

In this paper we conducted an anatomic study on the inflorescence, the female flower and the staminate flower of Jatropha curcas. The results showed that the flower development on the lower branch was earlier than that on the upper branch in the same inflorescence and the terminal flower developed before the two lateral flowers did in the same dichotomous cyme. There was a bisexual period in female flower during developmental period but not in male which is unisexual flowers. The ovule primordium changed its orientation by 90° during the development and finally formed anatropous ovule.

Key words: Jatropha curcas, female flower, male flower, development, anatomical structure