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樹木の休眠に関する研究（IV） : タブノキの生態型と休眠の相互関係 永田, 洋 Nagata, Hiroshi 万木, 豊 Yurugi, Yutaka 471 dormancy ecotypic variation Subtropical Zone Temperate Zone Machilus thunbergi application/pdf The terminal buds of Machilus seedings from the seeds collected in the Subtropical Zone (Iriomote,Okinawa,Amami) could not survive the winter, but the seedlings from the Temperate Zone (Kagoshima,Kochi,Mie,Chiba,Iwate,Aomori) grew up well without frost damage in Mie(Table 1). The terminal buds of Machilus seedlings grown in the Subtropical Zone were not induced into the dormacy requiring chilling for its release and had a relatively wide range of temperatures suitable for bud break(Table 4 and 5). So the terminal buds often sprout in the winter in Mie and then are killed by frost. On the other hand, the terminal buds of Macilus seedlings collected from the Temperate Zone could be induced into the dormancy requring chilling for its release(Table 4 and 5)and sprouted in spring without frost damage in Mie. This dormancy,however,could not be induced with short-days at the temperatures ranging from 18 to 28℃(Fig.5-8). The relationship between photoperiod and temperature seems to play an important role in inducing dormancy. And photoperiod seems to have a great effect on the growth patterns, that is, the relationship between leaf initiation and internode growth(Fig.9). 三重大学生物資源学部 1990-03-31 jpn departmental bulletin paper VoR http://hdl.handle.net/10076/3175 https://mie-u.repo.nii.ac.jp/records/5704 0915-0471 AN10073846 三重大学生物資源学部紀要 = The bulletin of the Faculty of Bioresources, Mie University 4 147 156 https://mie-u.repo.nii.ac.jp/record/5704/files/AN100738460000403.pdf application/pdf 469.5 kB 2017-02-18