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題名 | 紅檜與臺灣扁柏低的葉綠體DNA遺傳變異及族群分化=Low Chloroplast DNA Variation and Population Differentiation of Chamaecyparis formosensis and Chamaecyparis taiwanensis |
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作者 | 黃麗虹; 黃士穎; 林讚標; Hwang, Li-houng; Hwang, Shih-ying; Lin, Tsan-piao; |
期刊 | 臺灣林業科學 |
出版日期 | 20000600 |
卷期 | 15:2 2000.06[民89.06] |
頁次 | 頁229-236 |
分類號 | 377.13 |
語文 | chi |
關鍵詞 | 紅檜; 臺灣扁柏; 葉綠體DNA變異; Chamaecyparis formosensis; Chamaecyparis taiwanensis; Chloroplast DNA variation; |
中文摘要 | 本文以PCR/RFLP及核酸序列分析紅檜與台灣扁柏之葉綠體基因組之 多型性。結果發現紅檜與台灣扁柏於棲蘭山與阿里山兩族群間,在兩個葉綠體 DNA之基因間區間序列其限制片段長度及核酸序列均沒有差異。如此低的遺傳 變異可能是因為現今之紅檜與台灣扁柏族群為冰河期存在之大族群的殘留小族 群,而未必是花粉散播所提供之基因交流極為頻繁所造成。trnV-trnM基因間區 間序列在紅檜與台灣扁柏兩者間有兩個HinfI之切點之差異,在petG-trnP基因 間區間序列也發現台灣扁柏與紅檜之間有限制片段長度及其他點突變。紅檜與台 灣扁柏間之親源關係,仍有待與其它扁柏屬植物,特別是日本扁柏比較後才能明 確瞭解。 |
英文摘要 | Polymorphisms in the chloroplast genome of C. formosensis and C. taiwanensis were investigated by a PCR-based RFLP and nucleotide sequences. No fragment length nor nucleotide sequence differences were detected for 2 chloroplast intergenic spacers between Chilanshan and Alishan populations in both Chamaecyparis species. Low genetic variation has probably resulted from the refugial nature of these populations since the last glaciation rather than from recurrent pollen dispersal between Chilanshan and Alishan populations of these 2 Chamaecyparis species. Two HinfI restriction site differences were found in the trnV-trnM intergenic spacer between C. formosensis and C. taiwanensis. Fragment length difference as well as point mutations in the petG-trnP intergenic spacer between C. formosensis and C. taiwanensis were also found. Further comparison with other Chamaecyparis species, especially C. obtusa, is required in order to understand the phylogenetic relationship between C. formosensis and C. taiwanensis. |
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