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題 名 | 藉由葉部特徵及ITS探討臺灣產朴樹屬(榆科)植物之分類關係=Taxonomy of Celtis (Ulmaceae) in Taiwan Based on Leaf Morphologies and nrITS Sequence |
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作 者 | 張淇鋒; 何坤益; 呂福原; | 書刊名 | 嘉大農林學報 |
卷 期 | 7:2 2010.08[民99.08] |
頁 次 | 頁68-83 |
分類號 | 373.963 |
關鍵詞 | 朴樹屬; 葉部形態; 核醣體DNA內轉錄間隔區; 植物分類; Celtis; Leaf morphology; nrITS; Taxonomy; |
語 文 | 中文(Chinese) |
中文摘要 | 榆科(Ulmaceae)朴樹屬(Celtis L.)植物因葉部外觀形態頗為相似,在種的鑑定上易混淆。應用葉部形態特徵,佐以核醣體DNA內轉錄間隔區(rDNA internal transcribed spacer, ITS)序列之差異,進行台灣產朴樹屬5種植物親緣關係以釐清其分類問題。採集台灣27處天然分布區之192株樣本材料,觀察其葉部之各項形態資料後,選取定量(quantitative)與二態定性(two-state qualitive)之13項特徵,經測量、觀察後以非加權配對算數平均法(UPGMA)建立親緣樹狀圖。在ITS序列中設計特有核酸引子(primer),利用聚合酶連鎖反應(PCR),將5.8S核醣體核酸基因與內轉錄間隔區複製,序列分析則使用最大儉約法(maximum parsimony, MP)與相鄰連接法(neighbor joining, NJ)建立親緣譜系圖,結果可區分台灣產朴樹屬為朴樹(C. sinensis)、台灣朴樹(C. formosana)、石澀朴(C. nervosa)、沙楠子樹(C. biondii)及菲律賓朴樹(C. philippensis)等。 |
英文摘要 | Hackberry (Celtis L.) is subordinate to the Ulmaceae. The taxonomy of the species is difficult because of the high similarities of the leaf appearance shared by species. This study examined the systematics of Taiwanese Celtis based on the morphological characters of leaves and molecular evidence of nuclear ribosomal ITS region. In totally, 192 samples were sampled from 27 areas in Taiwan. Observation and selection of appropriate representations of leaf characters were made and 13 features were accordingly chosen based on morphological traits. An unweighting pair group method with arithmetic mean (UPGMA) dendrogram was constructed. In this study, specific primers were designed for the entire internal transcribed spacer region (ITS)and 5.8S ribosomal DNA(rDNA)gene were PCR amplified. A maximum parsimony tree was reconstructed based on ITS sequence. Five Celtis species, C. sinensis, C. formosana, C. nervosa, C. biondii and C. philippensis, were identified. |
本系統中英文摘要資訊取自各篇刊載內容。