臺灣博碩士論文加值系統

本研究為探討臺灣不同地區島桑(Morus acidosa Griff) 族群生態特性及
遺傳變異，於1991年7、8月間分別前往北宜地區、北部地區、嘉南地區、
恆春地區、花東地區、中央山區及西岸地區等七個族群，調查各島桑
(M. acidosa Griff)族群之生育性狀，並利用多變數統計進行族群間比較
；同時利用過氧化、酸性磷酸等同功異構進行電泳分析。結果摘述
於後： 1.臺灣島桑(M. acidosa Griff)族群在七個不同地區外表性狀之
平均值、頻度分布、性狀間相關情形及多變數統計分析等結果，均表示族
群間具有顯著的生態差異；然而由主成分分析亦獲知，族群間呈連續性變
異。 2.利用過氧化及酸性磷酸等同功異構進行電泳分析及群叢分
析結果，臺灣島桑(M. acidosa Griff)族群大致上可歸納為三個主要群叢
即一．北宜族群、北部族群及花東族群；二．嘉南族群；三．恆春族群、
中央族群及西岸族群。 3.綜合以上各試驗結果，推測臺灣島桑(M.
acidosa Griff)在不同地區族群間，已有遺傳分化之現象產生。

In order to understand the ecological characteristics and
variation among populations of mulberry(Morus acidosa Griff) in
Taiwan. Seven populations including Pei-Yi、Nor- thern、Chia-nan
、Herng-Chuen、Hau-Tong 、Central mountain and West coast etc
.were sampled and were investigated fron July to August ，1991.
Besides ，isozyme such as per- oxidase and acid phosphatase
were also used to explore genetic variation within and among
populations of mulberry(M. acidosa Griff).The main results are
summaried as follows： 1.Frequency distribution 、morphological
traits and correla- tions of traits were significantly
different among the seven natural populations of mulberry (M.
acidosa Griff)in Taiwan. However，prinical components analysis
showed a continous vari- ation among populations . 2. Three
main cluster could be discriminated by isozymes
electrophoresis and cluster analysis.First cluster consist of
Pei-Yi 、Northern and Hau-Toung populations； Chia-nan
population consistute second cluster；third cluster consist of
Central mountain、West coast and Herng-Chuen populations. 3.The
result indicated that there is genetic differentiation among
populations of mulberry (M. acidosa Griff) in Taiwan .