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題 名 | 應用葉綠體trnF-trnL核酸序列探討臺灣八種杜鵑花之分子親緣關係=Molecular Phylogeny of Eight Taiwanese Rhododendron Species Based on Chloroplast trnF-trnL DNA Sequences |
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作 者 | 黃士穎; 徐國凱; | 書刊名 | 臺灣林業科學 |
卷 期 | 16:3 2001.09[民90.09] |
頁 次 | 頁153-160 |
分類號 | 377.2209 |
關鍵詞 | 葉綠體DNA; 分子親緣關係; 杜鵑; 系統分類; Chloroplast DNA; Molecular phylogenetics; Rhododendron; Systematics; trnF(GAA)-trnL(UAA); |
語 文 | 中文(Chinese) |
中文摘要 | 本研究藉由葉綠體DNA之trnF-trnL基因間區間序列比較已知八種杜鵑之親緣關 係,八種杜鵑trnF-trnL基因間區間序列於排序後之全長為460個鹼基對,此區域內有16個 變異處,其中10個可用以判定親緣關係。核酸序列以MEGA軟體進行neighbor-joining及 parsimony樹狀親緣關係圖的分析,均可得到三個主要之分群。第一群包含玉山杜鵑、紅星杜 鵑、森氏杜鵑、南湖杜鵑及臺灣杜鵑,臺灣杜鵑可自此群單獨分出為一群。第二群為金毛杜 鵑及烏來杜鵑。西施花則單獨獨立為第三群,而與其他七種杜鵑有較遠之親緣關係。本研究 之主要結果為藉由分子證據顯示玉山杜鵑、森氏杜鵑、紅星杜鵑及南湖杜鵑之間有非常接近 的親綠關係,而此結果亦與形態的證據吻合。 |
英文摘要 | Pyhlogenetic relationships among 8 species of Rhododendron were derived from sequence comparisons of the chloroplast trnF-trnL intergenic spacer region. Aligned sequences of the 8Rhododendron taxa were 460 base pairs. The region contained 16 variable sites, of which 10 were phylogenetically informative. Neighbor-joining and parsimony analyses were conducted using MEGA. Identical topology with 3 major clades was obtained from parsimony and neighbor-joining trees. Clade 1consisted of R. pseudochrysanthum, R. rubropunctatum, R. hyperythrum, and R. formosanum. Rhododendron formosanum was sister to the other 4 species in the clade 1. Clade 2 consisted of R. oldhamii and R. kanehirai. Rhododendron ellipticum formed clade 3 and was basal to all other Rhododendron species. Close phylogenetic relationships among R. pseudochrysanthum, R. morii, R. rubropunctatum, and R. hyperythrum based on the cpDNA sequences agreed with those derived from morphological characters. |
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