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題 名 | Genetic Diversity and Population Structure of Gleditsia Japonica var.Koraiensis in Korea=在韓國境內Gleditsia Japonica var. Koraiensis之基因歧異度和族群結構 |
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作 者 | Huh,Man Kyu; Lee,Hak Young; Huh,Hong Wook; | 書刊名 | Botanical Bulletin of Academia Sinica |
卷 期 | 40:2 1999.04[民88.04] |
頁 次 | 頁159-164 |
分類號 | 373.323 |
關鍵詞 | 基因歧異度; 族群結構; Genetic diversity; Gleditsia japonica; Population structure; |
語 文 | 英文(English) |
中文摘要 | 我們使用酵素法來估算在韓國境內Gleditsia japonica之品筈koraiensis的基因[]及族群基因結構。在l7個基因裡有11個 (佔64.7%) 組現可檢驗出多型性。基因異度(億為0.247)比相似生活史之物種的億高。當分析性?固定指數時常(由每一族群之所有多型性基因座算出),發現和Hardy-Weinberg公式估算之期望值有相當程異結合子的缺少。此一現象想是同族繁殖及自花受粉所致。多型性基座之平均G[]億為0.145,顯示大多數值即85.5%)的基因因賦異來自族群內。自平均G[]億所間撥估算之基因流乃中等程度(Nm=1.24)。己知有限基因流動之情形下,我們所研究之這些族群預期會基因浮動以導致歧異現象;而浮動乃小族群內相對因子之隨機流失。 |
英文摘要 | Enzyme electrophoresis was used to estimate genetic diversity and population genetic structure of Gleditsia japonica var. koraiensis in Korea. Eleven of the 17 loci (64.7%) showed detectable polymorphism. Genetic diversity (0.247) was higher than average for species with similar life history traits. Analysis of fixation indices, calculated for all polymorphic loci in each population, showed a substantial deficit of heterozygotes relative to Hardy-Weinberg expectations. This deficit is partly associated with inbreeding which is due to consanguineous and selfing mating. The average GST for polymorphic loci was 0.145, indicating that most (85.5%) of the genetic diversity occurred within populations. The indirect estimate of gene flow based on mean GST was moderate (Nm = 1.24). Given limited gene flow, populations are expected to diverge genetically due to drift, the random loss of alleles due to small population size. |
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