查詢結果分析
相關文獻
- Low RAPD Polymorphism in Archangiopteris itoi, a Rare and Endemic Fern in Taiwan
- 臺灣地區臺灣鏟頷魚族群遺傳結構之研究
- Eocene Palynomorphs of Taiwan-Pteridophytic Spores
- 臺灣東北部的矢竹(Arundinaria usawai Hayata)亞族群間的遺傳變異度分析
- Confirmation of Three Species of Pteridophytes in Taiwan
- SEM Studies on Spore in Taiwanese Fern Genera I. Athyrioids
- 臺灣傑出的蕨類植物採集者王弼昭及其所採集重要蕨類標本選介
- Phenology of Cibotium taiwanense (Dicksoniaceae)
- 臺灣稀有蕨類植物--澤瀉蕨
- 臺灣稀有蕨類植物--高山鳳了蕨
頁籤選單縮合
題 名 | Low RAPD Polymorphism in Archangiopteris itoi, a Rare and Endemic Fern in Taiwan=臺灣的稀有及特有蕨類植物:伊藤氏原始觀音座蓮蕨之低的RAPD多型性 |
---|---|
作 者 | 許再文; 牟善傑; 蔣鎮宇; | 書刊名 | Botanical Bulletin of Academia Sinica |
卷 期 | 41:1 2000.01[民89.01] |
頁 次 | 頁15-18 |
分類號 | 378.13 |
關鍵詞 | 伊藤氏原始觀音座蓮蕨; 保育生物學; 蕨類; DNA指紋; 遺傳變異; 逢機複製多型性DNA片段; 臺灣; Archangiopteris itoi; Conservation biology; DNA fingerprinting; Ferns; Genetic variation; RAPD; Taiwan; |
語 文 | 英文(English) |
中文摘要 | 伊藤氏原始觀音座蓮蕨為臺灣的特蕨類植物,因人為干擾處於極度瀕危, 原始觀 音座蓮蕨屬的起源依化石證據可追溯到中諸羅紀,野外的觀察指出目前在野外,僅 18 個植 株存活於烏來的單一族群中。而當時本種發表所根據的模式蓮華池族群則已完全消失;本研 究利用 RAPD 指紋技術偵測個體間的遺傳變異,經 40 個引子的複製,只有一個引子顯現出 個體間的多型性,並鑑定出 6 個不同的基因型。 族群內低的遺傳變異度可能歸因於過小的 族群,而族群大小則受到棲地破壞的影響及限制,在一個小族群內,遺傳漂變有較大的效應 使大部分的基因座失去遺傳變異。 在本研究中,RAPD 資料雖然顯現極低的遺傳變異,但一 方面也指出重建族群所需遺傳物質的可得。 |
英文摘要 | Archangiopteris itoi, an endemic fern in Taiwan, is under threat due to human disturbance. Based on fossil evidence the origin of Archangiopteris can be dated to the Middle jurassic Age. Field survey indicated that only eighteen individuals were left in the wild. The population at Lienhwachi, on which the species was named, is now extinct. The genetic variation of the population remaining at Wulai was assessed by RAPD fingerprinting. Of 40 oligo primers, only one revealed polymorphism. Nevertheless, this primer enabled identification of six haplotypes. The low variability within the population is ascribed to the small population size, which was constrained largely due to habitat disturbance. In the small population, genetic drift will have greater effects leading to loss of variation at most loci. In this study, RAPD data indicated that some variation existed within the population, thus suggesting that materials were available for re-establishment of the populations. |
本系統中英文摘要資訊取自各篇刊載內容。