Ecological differentiations accompanied with the local distribution in wild type Camellia japonica populations.

野生型山茶群体的生态分化伴随着局部分布。

• 批准号: 63560030
• 负责人: UEMOTO Shunpei
• 金额: $ 1.28万
• 依托单位: IWATE UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63560030/
• 关键词: Camellia japonica; Ecology; Winter bud; Cold-resistance; Bract; Isozyme; Heters zygosity; Wild population; ツバキ属; 分布の北限

After the last glacial period, the distribution of species of plants were progressed to northward with retreat of glacial in northern hemisphere. Camellia japonica plants also have been moving to northward by the two warm currents, Kuro- and Tsushima-currents from southern most island of Okinawa, and they form many natural populations. Both capsule and seed of C. japonica survived for long term as 20 to 30 days in the sea water. So, it was assumed that a lot of wild type of C. japonica plants were distributed advanced to north area along sea coast of Japanese islands, and that northern most located C. japonica population have reached in a tiny peninsula of Henashi, Fukaura, Aomori Pref., in the coast of Japan Sea. Every tree in this population shows a state of hardy buds, Which have more number of bract than on the tree in Okinawa.Camellia trees in the population in Henashi form many small population patches, which was made of clonal tiny populations by vegetable reproduction. In those populations, a lot of horizontally grown roots in slope soil, and many shoot have sprouts up from these roots just like as a rizome in perennials.By means of isozyme pattern analysis, it was suggested that the rate of hetero-zygosity in the wild C. japonica populations decreased accompany with northward moving from Okinawa through Aomorl.

末次冰期后，随着北方冰川的退缩，植物种类的分布向北推进。山茶属植物也随着冲绳南部的黑潮和对岛暖流向北迁移，形成了许多自然种群。C.在海水中能存活20 ~ 30天。因此，人们认为许多野生型C。日本列岛沿岸沿着向北部分布，而分布最广的日本列岛北方则分布最广。日本人口已经达到了一个小半岛的Henashi，松浦，青森县，在日本海沿岸。该种群中的每株茶树都表现出哈代芽的状态，其苞片数量比冲绳种群中的多。在这些种群中，有许多水平生长的根在坡地土壤中生长，许多新梢从这些根中萌发，就像多年生植物中的一个裂缝一样。随着从冲绳经青森县向北迁移，粳稻种群数量减少。

项目成果

EGUCHI, T., H.OKUBO and S.UEMOTO: "Genetic divergence among intraspecific taxa of Camellia japonica L." J.of the Japanese Soc. for Hort.Sci.

EGUCHI, T.、H.OKUBO 和 S.UEMOTO：“山茶花种内分类群之间的遗传分化”。

Eguchi,T.,H.Okubo,K.Fujieda,and S.Uemoto: "Genetic divergence among intlraspecific taxa of Camellia japonica L." 園芸学会雑誌.

Eguchi, T.、H. Okubo、K. Fujieda 和 S. Uemoto：“Camellia japonica L. 种内分类单元的遗传差异”。园艺学会杂志。

上本俊平、等: "ツバキ属植物における苞数と耐寒性との関連性" 西部舞鶴植物園研究報告.

植本俊平等人：“山茶属植物的苞片数与耐冷性的关系”，西洋舞鹤植物园研究报告。

UEMOTO, S. et al.: "Relationship between bract number and cold tolerance in the genus Camellia L." Research bulletin of Seibu-Maizuru botanical garden, 1990.

UEMOTO, S. 等人：“山茶属的苞片数量与耐寒性之间的关系。”

KOU, T., S.UEMOTO and H.OKUBO: "Interspecific hybridization with Camellia chrysantha." J.of the Japanese Soc. for Hort.Sci.58(Supplement 2):434-435.1989.

KOU, T.、S.UEMOTO 和 H.OKUBO：“与金花茶的种间杂交。”