| 鹅观草属4个种的核型与进化 |
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| 引用本文： | 曹刚,周永红,张海琴,康厚扬,邓小锋.鹅观草属4个种的核型与进化[J].植物研究,2006,26(2):141-146. |
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| 作者姓名： | 曹刚 周永红 张海琴 康厚扬 邓小锋 |
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| 作者单位： | 四川农业大学小麦研究所,都江堰,611830 |
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| 基金项目： | 中国科学院资助项目;四川省教育厅、科技厅联合项目 |
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| 摘 要： | 报道了4个种鹅观草属（Roegneria C. Koch）植物的核型，其核型公式如下：芒颖鹅观草(R. aristiglumis Keng et S. L. Chen), 2n=4x=28=22m+6sm（2SAT）；短颖鹅观草(R. breviglumis Keng), 2n=4x=28=20m（2SAT）+8sm；红原鹅观草(R. hongyuanensis L. B. Cai), 2n=4x=28=22m+6sm（2SAT）；山东鹅观草(R. shandongensis（B. Salomon）J. L. Yang, Y. H. Zhou et Yen), 2n=4x=28=24m（2SAT）+4sm。同时对染色体主要特征的演变规律进行了分析，揭示了鹅观草属4个种的相对进化程度以及宏观分类中2个组的系统发育关系，表明鹅观草属的半颖组在系统发育中派生了颖体短小的小颖组。
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| 关 键 词： | 鹅观草属 核型 进化 |
| 收稿时间： | 2005-04-03 |
| 修稿时间： | 2005年4月3日 |
Karyotypic and evolution variations of four species in Roegneria |
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| CAO Gang,ZHOU Yong-Hong,ZHANG Hai-Qin,KANG Hou-Yang,DENG Xiao-Feng.Karyotypic and evolution variations of four species in Roegneria[J].Bulletin of Botanical Research,2006,26(2):141-146. |
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| Authors: | CAO Gang ZHOU Yong-Hong ZHANG Hai-Qin KANG Hou-Yang DENG Xiao-Feng |
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| Institution: | Triticeae Research Institute, Sichuan Agricultural University, Dujiangyan 611830 |
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| Abstract: | Karyotypes of four Roegneria species,R.aristiglumis Keng et S.L.Chen,R.breviglumis Keng,R.hongyuanensis L.B. Cai,and R.shandongensis(B.Salomon) J.L.Yang,Y.H.Zhou et Yen,were reported.The karyotype formulae of R.aristiglumis,R.breviglumis,R.hongyuanensis,R.shandongensis are 2n=4x=28=22m 6sm(2SAT),2n=4x=28=20m(2SAT) 8sm,2n=4x=28=22m 6sm(2SAT),2n=4x=28=24m(2SAT) 4sm,respectively.The advance indexes which can reflect the evolutional levels of the four species were summarized.The phylogenetic relationships of the two sections in the macroscopic classification were enunciated.The results show that R.shandongensis is the most primitive,R.breviglumis is the most evolutive among the four species;and the Sect.Goulardia(Husnot) L.B.Cai might produce the Sect.Roegneria in the phylogenetic process of Roegneria C.Koch. |
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| Keywords: | Roegneria C Koch karyotypy evolution |
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