| 三种鹅鸡草的生物系统学研究 |
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| 引用本文： | 周永红.三种鹅鸡草的生物系统学研究[J].草业学报,2000,9(2):45-52. |
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| 作者姓名： | 周永红 |
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| 作者单位： | 四川农业大学小麦研究所!四川都江堰市611830 |
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| 摘 要： | 通过对鹅观草属犬草组长芒鹅观草、缘毛鹅观和鹅观草３个种及春种间杂种的形态变异、染色体配对行为和繁育特性进行研究，探讨这３个种的亲缘关系。Ｆ１植株的外形趋于两亲本之间。在减数分裂过程中，亲本种染色体配对正常。杂种Ｆ１的染色体配对数较高，平均构型：Ｒ．ｐｅｎｄｕｌｉｎａ＊Ｒ．ｄｏｌｉｃｈａｔｈｅｒａ为０．５６１Ⅰ＋１３．７２Ⅱ；Ｒ．ｄｏｌｉｃｈａｔｈｅｒａ＊Ｒ．ｋａｍｏｊｉ为７．５８Ⅰ＋１３．５８Ⅱ＋
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| 关 键 词： | 鹅观草 染色体配对 染色体组 形态比较 |
| 文章编号： | 1004-5759(2000)02-0045-08 |
| 修稿时间： | 1999年4月8日 |
A biosystematic study on Roegneria dolichathera, R. pendulina and R. kamoji |
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| ZHOU Yong,hong,WTBZ.A biosystematic study on Roegneria dolichathera, R. pendulina and R. kamoji[J].Acta Prataculturae Sinica,2000,9(2):45-52. |
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| Authors: | ZHOU Yong hong [WTBZ] |
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| Institution: | ZHOU Yong hong [WT5BZ] |
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| Abstract: | In order to investigate the biosystematic relationships among Roegneria dolichathera, R. pendulina and R. kamoji , the morphological characters and the aspects of interspecific hybridization, chromosome pairing and fertility of the three species and their F 1 hybrids were carefully examined in this study. It was concluded from observation results that 1) the three species are strictly independent, they are valid biological species sharing two basic St and Y genomes; 2) R. dolichathera is more closely related to R. pendulina than either of them to R. kamoji. |
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| Keywords: | Roegneria dolichathera Roegneria pendulina Roegneria kamoji chromosome pairing genome morphological comparison |
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