| 披碱草属6种植物的核型研究 |
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| 引用本文： | 时英,郭本兆,李建华.披碱草属6种植物的核型研究[J].中国科学院研究生院学报,1989,27(3):215-221. |
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| 作者姓名： | 时英 郭本兆 李建华 |
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| 作者单位： | (中国科学院西北高原生物研究所，西宁) |
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| 摘 要： | 本文首次报道特产于我国青藏高原披碱草属Elymus的6种植物的染色体数目和核型。6个种的染色体数目为2n＝42，都是6倍体。它们的核型是：黑药鹅观草，2n=6x＝42=32m+10sm;糙毛鹅观草，2n=6x=42=34m+8sm；大颖鹅观草，2n=6x=42=30m+12sm；疏花鹅观，2n=6x=42=32m+10sm；青海鹅观草，2n=6x= 42＝34m十8sm；长颖鹅观草，2n=6x＝42=34m十8sm。它们的核型属1B或2B型，染色体中均未发现随体。
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| 关 键 词： | 披碱草属 核型 |
A Study on Karyotypes of 6 Species of Elymus in China |
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| Shi Ying,Kuo Pen-Chao,Li Jian-Hua.A Study on Karyotypes of 6 Species of Elymus in China[J].Journal of the Graduate School of the Chinese Academy of Sciences,1989,27(3):215-221. |
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| Authors: | Shi Ying Kuo Pen-Chao Li Jian-Hua |
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| Institution: | (Northwcst Plateau Institute of Biology, Academia Sinica, Xining) |
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| Abstract: | The present paper deals with the karyotype analysis of 6 species of Elymus
which are native to Qinghai-Tibetan plateau. The number of somatic chromosomes in root-
tip cells of the 6 species and their karyotypes are reportad here for the first time, and they are
all hexaploid, with 2n=6x=42. The karyotype formulae are as follows: E. melantherus,
2n=6x=42=32m+10sm, E. kengii, 2n=6x=42=34m+8sm, E grandiglumis, 2n=6x=42=
30 m+12 sm, E. laxiflorus, 2n=6x=42=32 m +10 sm, E. kokonoricus, 2n+6x=42=34 m
+8 sm, E. longiglumis, 2n+6x=42=34 m+8 sm. No satellites have been founded in the 6
species and all the karyotypes belong to 1B or 2B type: |
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| Keywords: | Elymus karyotypes |
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