| 白豆杉的核型和性染色体的研究 |
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| 引用本文： | 管启良 俞仲辂. 白豆杉的核型和性染色体的研究[J]. 遗传学报, 1993, 20(2): 155-158 |
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| 作者姓名： | 管启良 俞仲辂 |
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| 作者单位： | [1]杭州大学生物系，杭州310012 [2]杭州植物园 |
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| 摘 要： | 白豆杉pseudotaxus chienii(Cheng)Cheng是我国裸子植物特有属之一，雌雄异常，根尖 细胞染色体分析表明：雌株有一对异形性染色体，异配性别，属ZW型；雄株是同配性别，属ZZ型，雌株的型为2n=2x=24=22m(2SAT ZW) 2T，雄株的核型为2n=2x=24=22m(2SAT ZZ) 2T。Giemsa C-带,显示，Z染色体长短臂均具端带，W染色体不显带。
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| 关 键 词： | 白豆杉 性染色体 染色体组型 |
Studies of Karyotypes and Sex Chromosomes in Pseudotaxus chienii |
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| Guan Qiliang Lin Li. Studies of Karyotypes and Sex Chromosomes in Pseudotaxus chienii[J]. Journal of Genetics and Genomics, 1993, 20(2): 155-158 |
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| Authors: | Guan Qiliang Lin Li |
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| Abstract: | Pseudotaxus chienii (Cheng) Cheng is one of endemic genera of gymnosperms in our country, h is dioecious. Through the chromosomal analysis in the cells of root tip, it is shown below: The female plant has a pair of heteromorphic sex chromosomes. It is heterogamctic-sex and belongs to Z W type. The male plant is homogametic-sex and belongs to Z Z type. The karyotypic formula of the female plant is 2n = 2x = 24 = 22m(2SAT + ZW)+2T, while that of the male plant 2n = 2x = 24 = 22m(2SAT ZZ)+2T.The Giemsa C-banding is shown that both the long arm and short arm of Z chromosome have telomeric band and W chromosome shows no band. |
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| Keywords: | Pseudotaxus chienii Sex Chromosome Karyotype Banding Pattern |
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