Studies on the relationships between ecotypic characteristics and distribution of some important trees in Japan

休眠可以被理解为个体物种对其环境适应的一种表现。从北方寒冷地区到南亚热带地区，对分布在不同环境中的一些树种各种类型休眠的性质进行研究，似乎可以为适应环境的过程提供有用的信息。这些比较研究可能会为生理领域中的各种重要问题提供一些有希望的线索。Et Zucc.是从冲绳县连续发行的。致青森县首府。在日本。Iriomote岛、冲绳主岛和Amami岛的幼苗不能在Mie Pref.越冬，但Kochi Pref.、Mie Pref.、Chiba Pref.、Iwate Pref.和Aomori Pref.的幼苗不能在Mie Pref.越冬。都能存活下来。来自不同环境的幼苗在休眠方面可能表现出不同的性质。

Dormancy can be understood as a manifestation of adaptation by an individual species to its envirnment. Research on the nature of various types of dormancy of some tree species distributed in different environments from northern cold areas to southern subtropical areas seems to give useful information about the process of adaptation to the environment. These comparative studies may supply some promising clues to various important problems in the physiological fields.Machilus thunbergii Sieb. et Zucc. is distributed continuously from Okinawa Pref. to Aomori Pref. in Japan. And the seedlings from Iriomote Island, Okinawa Main Island and Amami Island are not able to survive in the winter in Mie Pref., but the ones from Kochi Pref., Mie Pref., Chiba Pref., Iwate Pref., and Aomori Pref. are able to survive. The seedlings from different environments may display different natures in regard to dormancy.