| 长白山特有种单花橐吾的核型研究 |
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| 引用本文： | 瞿小杰,董然.长白山特有种单花橐吾的核型研究[J].中国草地学报,2019(2):107-110. |
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| 作者姓名： | 瞿小杰 董然 |
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| 作者单位： | 长春科技学院;吉林农业大学 |
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| 基金项目： | 吉林省教育厅"十二五"科学技术研究项目(2015565) |
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| 摘 要： | 以长白山特有种单花橐吾种子为材料,采用常规压片法进行核型研究。结果表明:单花橐吾染色体数为2n=2x=58,核型为2A,核不对称系数为58.90%,核型公式为2n=2x=58=44m+14sm,从染色体相对长度组成来看,2n=58=32M_2+26M_1,依据核型进化趋势是由A→B→C的理论,单花橐吾属于较为原始的类型。
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| 关 键 词： | 单花橐吾 染色体 核型 |
Karyotype Studies of Endemic Species- Ligularia jamesii from Changbai Mountain |
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| QU Xiao-jie,DONG Ran.Karyotype Studies of Endemic Species- Ligularia jamesii from Changbai Mountain[J].Chinese Journal of Grassland,2019(2):107-110. |
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| Authors: | QU Xiao-jie DONG Ran |
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| Institution: | (Changchun University of Science and Technology,Changchun 130600,China;Jilin Agricultural University,Changchun 130118,China) |
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| Abstract: | The chromosome karyotype of Ligularia jamesii seeds, endemic species of Changbai mountain, was studied by the root tip squash method after the seed germination.The results showed that the chromosome number of Ligularia jamesii was 2n=2x=58 and its karyotype was 2A, the index of karyotype asymmetry was 58.90%, the karyotype formula was 2n=2x=58=44m+14sm.The composition of relative chromosome length was 2n=2x=58=32M 2+26M 1.According to the theory that the evolution trend of karyotype was from A to B to C, Ligularia jamesii was a relatively primitive type.The chromosome numbers and karyotype of Ligularia jamesii tested was reported for the first time. |
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| Keywords: | Ligularia jamesii Chromosome Karyotype |
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