| 苎麻染色体核型和Giemsa C-带型及PMC减数分裂行为的研究 |
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| 引用本文： | 程尧楚,段映池,蒋佐升,谢卓荣,李宗道.苎麻染色体核型和Giemsa C-带型及PMC减数分裂行为的研究[J].湖南农业大学学报(自然科学版),1989(Z1). |
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| 作者姓名： | 程尧楚 段映池 蒋佐升 谢卓荣 李宗道 |
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| 作者单位： | 湖南农学院
(程尧楚，段映池，蒋佐升，谢卓荣)，湖南农学院(李宗道) |
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| 摘 要： | 本试验以苎麻品种芦竹青为材料,从有丝分裂和减数分裂两个方面进行研究,有丝分裂以嫩稍扦插诱导萌发幼根,采用F-BSG法制备染色体标本,对其染色体核型和Giemsa带型进行的分析结果表明,苎麻的核型公式为2n=28=8(L)st+18(S)st+2(S)SAT,全为不对称的染色体,N·F,值与其染色体的条数相等,每组染色体的臂指数均大于78%,染色体长度比大于2.1:1,属于4B类核型,Giemsa C-带带型单一,短臂为全带,长臂为着丝点带,减数分裂以2%醋酸洋红压片,发现同一株上幼蕾着生的部位不同,其发育进度不一致,以着生在茎的中,上部的幼蕾发育快,同一枝梗上以着生于下部的幼蕾发育早,而同一幼蕾的PMC在减数分裂终变期,后期I,末期I以及后期I,四分体等阶段同步程度高,同时观察到存在一定的高峰期。
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| 关 键 词： | 苎麻 染色体组型 染色体带 减数分裂 |
STUDIES ON THE KARYOTYPE, GIEMSA C-BANDS AND PMC MEIOSIS OF RAMIE |
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| Cheng Yaochu,Duan Yingchi,Jiang Zhuosheng,Xi Zhuorong,Li Zongdao,.STUDIES ON THE KARYOTYPE, GIEMSA C-BANDS AND PMC MEIOSIS OF RAMIE[J].Journal of Hunan Agricultural University,1989(Z1). |
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| Authors: | Cheng Yaochu Duan Yingchi Jiang Zhuosheng Xi Zhuorong Li Zongdao |
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| Institution: | Hunan Agricultural College |
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| Abstract: | Through chromosome preparations in accordance with F-BSG procedure,photographing of clear Separation and statistical analysis, the studies result in the findings of ramie chromosome morphology, number, karyotype, theGiemsa C-band pattern and the process of meiosis and reveal the relationshipbetween ramie flower bud development and the meiosis, the peak time of meiosisin a day and the considerable synchronism of meiosis at the stages of meiosisdiakinesis. anaphase I, telephase I, anaphase II and tetrad stage. |
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| Keywords: | Boehmeria nivea Idiogram Chromosome band Meiosis |
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