著者

星野 義延

出版者

日本生態学会

雑誌

日本生態学会誌 (ISSN:00215007)

巻号頁・発行日

vol.40, no.1, pp.35-41, 1990-04-30

被引用文献数

1

---

The fruits of Zelkova serrata show no modification for dispersal and usually fall in autumn still attached to the fruiting shoot with several brown leaves. Observations on the fruit distribution on the ground beneath mature Z. serrata trees revealed over 65 percent of fruits to be still attached to the fruiting shoot and that almost all fruits lay at some distance from the mature trees. The fall velocities of fruits with and without shoot were measured at 1.51m・sec^<-1> and 5.36m・sec^<-1>, respectively. From these observations and data, it is concluded that the fruiting shoot acts as a winddispersed diaspore, assisting the fruit dispersal of Z. serrata. The detachment of the fruiting shoot is not incidental but is related to the abscission of Z. serrta.