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中国蔷薇属6个种的染色体研究
马燕; 陈俊愉;   
1.北京林业大学园林系;2.北京林业大学园林系 北京 100083;3.北京 100083
摘要:
本文对原产中国的蔷薇属6种植物(Rosa spp.)进行了染色体观察,其中1种(巨花蔷薇(Rosa gigantea(Crep)Rehd.et Wils.))为国家重点保护植物,2种(疏花蔷薇(R.laxa Retz.)、宽刺蔷薇(R.platyacantha Shrenk))为国内首次报道。观察结果如下:染色体数目为2n=2x=14或2n=3x=21,均为小型染色体(2.24—2.78μm),其中大部分长度接近,染色体长度之比小于2;属对称核型。文中讨论了一些种(变种)的染色体数目及核型。
关键词:  蔷薇属植物  染色体数目  核型分析  
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