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題名 | Genetic Differentiation of Lilium Longiflorum Thunb. var. Scabrum Masam. (Liliaceae) in Taiwan Using Random Amplified Polymorphic DNA and Morphological Characters=臺灣地區鐵炮百合核酸多形性及形態遺傳分化之研究 |
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作者 | 溫佳思; 蕭如英; Wen, Chia-szu; Hsiao, Ju-ying; |
期刊 | Botanical Bulletin of Academia Sinica |
出版日期 | 19990100 |
卷期 | 40:1 1999.01[民88.01] |
頁次 | 頁65-71 |
分類號 | 435.456 |
語文 | eng |
關鍵詞 | 百合科; 鐵炮百合; 遺傳分化; 逢機擴大多形性核酸; Genetic differentiation; Liliaceae; Lilium longiflorum thunb var scabrum masam; RAPD; |
中文摘要 | 鐵炮百合分布在臺灣北部、東北部、東部、南部海岸及一些離島地區, 其形態特徵常隨生育環境不同而有很大的差異,造成分類地位常有爭議。本研究 以RAPD配合傳統之形態特徵調查來分析不同緯度、不等距離之鐵炮百合族群, 以了解其變異性是否具有遺傳基礎及此變異性係屬連續性變異或已分化成特殊 之生態型。形態特徵分析結果顯示族群間有很大的變異,且歸群結果顯示其具連 續性變異的趨勢。在RAPD的分析方面,總共測試了140個引子,選取其中放 大效果較佳且穩定者9個進行所有樣本的分析,結果顯示除三仙臺地區之族群 外,均為地理位置相近者先歸在一起,三仙臺因與本島有海水隔離,故其遺傳分 化情形與本島之族群較為不同,可見RAPD之分析可得知更細微的族群分化情 形。AMOVA的分析結果顯示將所有族群當作同一區域時,族群間的變異佔總變 異量之14.08%,而族群內的變異則佔總變異量之85.92%,且其顯著性測驗之p 值均小於0.001。如將北部與中南部族群區分為二區域進行AMOVA分析,結果 發現區域間之變異佔總變異量之5.94%(p<0.001),區域內族群問者為 10.18%(p<0.001),族群內者為83.88%(p<0.001),顯示鐵炮百合已有區域間及區 域內族群間之遺傳分化。 |
英文摘要 | Lilium longiflorum Thunb. var. scabrum Masam. is distributed along the northern, eastern, and southern coasts of Taiwan and in some of the outlying islets, It exhibits large amounts of morphological variation among populations in different habitats. Five populations were examined in the present study. In addition to a morphological study, RAPD were used to determine whether the observed morphological variation has a genetic basis and to investigate the variation pattern from different latitudes and different geographical locations. The results of the morphological analyses gave some indication of clinal trends; however, no conclusions can be made because of the limited number of populations studied. In the RAPD study, 140 primers were screened, 9 of which were selected to analyze in all of the samples. The results revealed that, with the exception of the islet Sansientai population, the closer the geographical locations of populations, the closer were their genetic relationships. The exception of islet Sansientai may result from the interruption of gene flow and the effect of genetic drift due to the small size of this islet's population. AMOVA analysis on RAPD data revealed that, of the total variation in the species, 14.08% was attributable to population differences and 85.92% to individual differences within populations when all populations were treated as belonging to a single region. The among population variance component was shown to be highly significant (P<0.00 1). When two northern populations were treated as a region and the other populations as another region, the result of AMOVA showed that the percentages of variation attributable to the differences between regions, among populations within regions, and among individuals within populations were 5.94% (p<0.00I), 10,18% (p<0.001), and 83.88% (p<0.001), respectively. |
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