Genetic diversity and geographic variation in natural populations of the endemic Castanea species in China
文献类型：期刊论文
| 作者 | Lang, P; Huang, HW |
| 刊名 | ACTA BOTANICA SINICA
 |
| 出版日期 | 1999-06-01 |
| 卷号 | 41期号:6页码:651-657 |
| 关键词 | Castanea mollissima Castanea seguinii Castanea henryi population allozyme genetic diversity genetic structure |
| ISSN号 | 0577-7496 |
| 英文摘要 | Genetic variability in 30 populations of three endemic Castanea (Tourn.) L. species (C. mollissima B1., C. seguinii Dode. and C. henryi (Skan) Rehd. et Wilsl) in China was investigated using isoelectric focusing in thin-layer polyacrylamide slab gels at 20 loci coding for 12 enzyme systems. C. mollissima was found to possess a significant higher value of genetic variability than that of the other two species. The percentage of polymorphic loci (P) and the expected heterozygosity ( He) were 90.0% and 0.311 at the species level, respectively; while P = 84.7%, He = 0.295 at the population level. Comparison of the population genetic variability of C. mollissima in three regions of China, the populations from the Yangtze River valley showed a markedly higher mean expected gene heterozygosity. The results provided additional evidence that the Yangtze River valley, particularly in Shennongjia area, was the center of the genetic diversity of C. mollissima. Genetic relationships among populations and species were assessed by Nei genetic identity (I) and standard genetic distance (D), suggesting that C. mollissima and C. seguinii have a closer relationship, and genetic distances were correlated with geographical distances among populations. Genetic differentiation between populations in C. mollissima, C. seguinii and C. henryi was 7.5%, 10.9% and 22.1%, respectively, and the gene now rate (Nm) was 3.20, 2.05 and 0.88 respectively. The study provides useful information for understanding of the origin and evolutionary events in genus Castanea and planning an effective conservation strategy. |
| WOS研究方向 | Biochemistry & Molecular Biology ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000081379500017 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/1249]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Huang, HW |
| 作者单位 | Chinese Acad Sci, Wuhan Inst Bot, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lang, P,Huang, HW. Genetic diversity and geographic variation in natural populations of the endemic Castanea species in China[J]. ACTA BOTANICA SINICA,1999,41(6):651-657. |
| APA | Lang, P,&Huang, HW.(1999).Genetic diversity and geographic variation in natural populations of the endemic Castanea species in China.ACTA BOTANICA SINICA,41(6),651-657. |
| MLA | Lang, P,et al."Genetic diversity and geographic variation in natural populations of the endemic Castanea species in China".ACTA BOTANICA SINICA 41.6(1999):651-657. |
入库方式： OAI收割
来源：武汉植物园
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