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五味子科两个种的核型比较研究
吴泽民; 黄成林;   
安徽农业大学林学系
摘要:
本文报道二色五味子和盘柱五味子两种的染色体核型,均为首次报道.结果表明两种的核型公式相同,2n=28=28m,但根据Stebbins的核型不对称性的分类它们之间存在着明显的差异,二色五味子为1A型;盘柱五味子为1B型。1B型是首次在被子植物中发现.也许它显示了原始类群中的一种进化特点。另外染色体相对长度组成表明二色五味子2n=28=12M2+14M1+2S;盘柱五味子2n=28=2L+12M2+12M1+2S.由此南五味子属的核型较二色五味子进化。
关键词:  核型  五味子属  南五味子属  
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