New occurrence of B chromosomes in Rheum tanguticum Maxim. ex Balf. (Polygonaceae) | |
Hu Yanping ; Li Wang ; Yi Li | |
刊名 | CARYOLOGIA
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2011-07-01 | |
英文摘要 | A cytogenetic study was conducted on Rheum tanguticum populations from Huangnan Tibetan Autonomous Prefecture, China. The results revealed the chromosome numbers 2n=22 and the karyotype formulae are 2n=22=22m or 2n=22=2sm+20m, belonging to Stebbins 1A type. However, it was interesting to observe metaphases with variable B chromosomes (1, 2, 3, 4, 6, 7) in a few specimens. For the first time, the occurrence of B chromosomes was reported in natural populations of R. tanguticum. The number of B chromosomes in R. tanguticum varied not only among individuals but also within the same root tip. |
内容类型 | 期刊论文 |
源URL | [http://ir.nwipb.ac.cn/handle/363003/6929] ![]() |
专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
推荐引用方式 GB/T 7714 | Hu Yanping,Li Wang,Yi Li. New occurrence of B chromosomes in Rheum tanguticum Maxim. ex Balf. (Polygonaceae)[J]. CARYOLOGIA,2011. |
APA | Hu Yanping,Li Wang,&Yi Li.(2011).New occurrence of B chromosomes in Rheum tanguticum Maxim. ex Balf. (Polygonaceae).CARYOLOGIA. |
MLA | Hu Yanping,et al."New occurrence of B chromosomes in Rheum tanguticum Maxim. ex Balf. (Polygonaceae)".CARYOLOGIA (2011). |
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