| 沙冬青属的细胞学研究 |
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| 引用本文： | 潘伯荣,黄少甫.沙冬青属的细胞学研究[J].Acta Botanica Sinica,1993,35(4):314-317. |
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| 作者姓名： | 潘伯荣 黄少甫 |
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| 作者单位： | 中国科学院新疆生物土壤沙漠研究所，中国林业科学院亚热带林业研究所 乌鲁木齐 830011，富阳 311400 |
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| 摘 要： | 沙冬青属(Ammopiptanthus)植物仅两个种,即蒙古沙冬青(A.mongolicus)和新疆沙冬青(A.nanus),为第三纪残遗种,是中亚荒漠唯一的常绿阔叶植物,因珍稀,临危而被列为国家重点保护植物”。国内外对该属两个种的染色体数目的记载存在着差异。本文对沙冬青属两种植物的染色体数目和核型进行了分析研究,旨在为探讨该属植物的发生和系统发育,以及开展植物多样性保护和合理开发利用积累资料。
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| 关 键 词： | 沙冬青属 蒙古沙冬青 新疆沙冬青 染色体数 核型 |
A CYTOLOGICAL STUDY OF THE GENUS AMMOPIPTANTHUS |
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| Authors: | Pan Bo-rong Huang Shao-fu Xinjiang Institute of Biology Pedology and Desert Research Academia Sinica Urumqi Subtropical Forestry Research Institute Chinese Academy of Forestry Fuyang |
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| Institution: | Pan Bo-rong,Huang Shao-fu Xinjiang Institute of Biology,Pedology and Desert Research,Academia Sinica. Urumqi 830011 Subtropical Forestry Research Institute,Chinese Academy of Forestry,Fuyang 311400 |
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| Abstract: | The present paper deals with a karyotype of two species of the genus Ammopiptanthus. The chromosome numbers in root-tip cells of these two species are both 2n = 18. The karyoty- pe formulas of the two species are as follows: A. mongolicus K(2n) = 18= 10m 4m(SAT) 2sm 2st; A. nanus K(2n) = 18 = 8m 2m (SAT) 2sm 2sm (SAT) 4sm(SC). Results obtained through chromosome examination have shown that they both belong to "2A" type of Stebbins' karyotypic asymmetry. But there are differences in chromosome formulas, it is assumed that A. nanus karyotype is a little more advanced than of A. mongolicus. |
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| Keywords: | Ammopiptanthus A mongolicus A nanus Chromosome numbers Karyo type |
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