Conservation of Pinus armandii var. amamiana based on the information about genetic variations.

华山松的保护

• 批准号: 10660150
• 负责人: GYOKUSEN Koichiro
• 金额: $ 1.98万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10660150/
• 关键词: Pinus armandii var. amamiana; Endangered species; Yaku island; Lethal factors; Pine wilt disease; Pine nematode; 種子生産; アイソザイム; 遺伝的分化

Seed production of Pinus aramandii var. amamiana was investigated for 5years (1995-1999) at Hasha mountain in Yaku island. The percentages of seed produced trees were 22.0〜32.9%, and there were not significant differences among years. The number of cone per tree was about 10, and each cone contained only 10 seeds. These results say that the seed production ability of this pine species is very low, and explain that there little seedlings or saplings of this pine species on the forest floors in this research area.The dead tree numbers were counted for five years to reveal the lethal factors of this pine species at Yaku island and Tane island. Pine wilt disease nematode was detected from the dead tree in Tane island, but natural disturbances (ex. Cliff collapse) were main factors of tree death in Yaku island.Cluster analysis of cone and seed characters said that there ware significant differences between these two islands, and these results were coincided with those of the isozyme analysis.There were significant differences about isozime analysis and seed characteristics between Yaku island and Tane island, therefore we suppose that the long distance movement of this pine species leads to the contamination of genetic variation.

华山松种子生产。1995-1999年在雅库岛哈沙山对鹅膏蕈蚊（amamiana）进行了5a的调查。结实率为22.0〜 32.9%，各年份差异不显著。每棵树的球果数约为10个，每个球果仅含10粒种子。结果表明，该树种的种子生产力很低，说明该树种在研究区的森林地面上几乎没有幼苗或幼树。从塔内岛的死树中检测到松材线虫，但自然干扰（例如：结果表明：崖崩是造成雅库岛树木死亡的主要因素，对球果和种子性状进行聚类分析，发现两岛之间存在显著差异，这与同工酶分析结果相吻合，雅库岛与丹内岛之间同工酶分析结果和种子性状存在显著差异，因此，我们推测该松种的长距离迁移导致了遗传变异的污染。

项目成果

Kanetani, S. Gyokusen, K. and Saito, Akira: "Relationship between the decline in the population of the endangered species Pinus armandii var. amamiana and pine wilt disease"Proceedings of international symposium, Sustainability of pine forests in relation

Kanetani, S. Gyokusen, K. 和 Saito, Akira：“濒危物种华山松种群数量下降与松枯病之间的关系”国际研讨会论文集，松树林的可持续性

金谷整一、玉泉幸一郎、齋藤明: "絶滅危惧種ヤクタネゴヨウのアイソザイム変異"日林九支研論. (印刷中). (2000)

Seiichi Kanaya、Koichiro Tamaizumi、Akira Saito：“濒危物种 Yakutanegoyou 中的同工酶变异”Nichibayashi 九州研究所（2000 年出版）。

Kanltani. S. Gyokusea, K. and Saito, A: "Relationship between the decline in the population of the endamaged species, Pinus armamdii var. amamiama. And pire wilt disease."Proceedings of international symposium, Sactaimability of pine forests in relation t

坎塔尼。

Kanetani, S. Gyokusen, K. and Saito, Akira: "Isozyme variations of endangered species, Pinus armandii var. amamiana"Kyushu Br. Jpn. For. Soc.. (in press).

Kanetani, S. Gyokusen, K. 和 Saito, Akira：“濒危物种华山松的同工酶变异”Kyushu Br.