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三棱栎种子特性与其致濒关系初步分析
The Preliminary Study on the Relationship Between Seed Characteristics of Trigonobalanus doichangensis and there Endangerment
查看参考文献6篇
文摘
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三棱栎是云南特有种,国家二级保护植物,主要分布在澜沧、沧源、孟连、西盟、勐腊等县.研究表明,其萌发温度在20~35℃范围内,萌发率在5.3%~9.1%之间.4个不同分布地和8种温度条件下萌发率差异不显著.本文认为三棱栎濒危的主要原因是:(1)三棱栎果实结实率低;(2)果实的特殊形状,不利于传播;(3)幼苗缺乏竞争力.针对三棱栎的濒危现状和原因,提出了三棱栎的一些保护措施. |
其他语种文摘
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Trigonobalanus doichangensis (A.Camus) Forman is an endemic to Yunnan, being one of the state-protected two-grade rare and endangered plants, and distributed mainly in Lancang, Cangyuan, Menglian, Ximeng and Mengla. The results showed that the seeds germinated at 20℃-35℃ .and germination rates is 5.3%-9, l%,but there were no different among the four different localities and eight different temperatures. Endangered reasons for T. doichangensis (A-Camus) Forman are follows: (1) there are fewer mature seeds in the fruits; (2) the shape and structure of fruits were unusual so that is harmful to its spreading and (3) seedling of T. doichangensis is disadvantageous in competition with other plants for various resources. Furthermore, the countermeasures for protection of T. doichangensis are discussed in this paper. |
来源
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种子
,2004,23(1):13-15 【扩展库】
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关键词
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三棱栎
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种子萌发
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濒危原因
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保护
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地址
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中国科学院昆明植物研究所, 昆明, 650204
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1001-4705 |
学科
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植物保护 |
基金
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中国科学院知识创新工程重要方向项目
;
中国科学院昆明植物研究所植物园项目
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文献收藏号
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CSCD:1852691
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参考文献 共
6
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