Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/29336
標題: 臺灣野梨之研究
Studies on Taiwan Native Pear
作者: 林文彬 
Lin, Wen-Ben
關鍵字: Pyrus koehnei;臺灣野梨;isozyme;polymerase chain reactions;PCR;同功異構酵素;聚合酵素連鎖反應
出版社: 園藝學系
摘要: 
台灣原產梨, 本來就屬稀有種,加上大量外來品系的引入, 經嫁接, 代或
雜交,使它面臨絕種的邊緣。當初 Hayata (1911) 在本省的南投縣發現
台灣野梨,此一台灣原生種與國內的植物誌及圖鑑有許多差距,本實驗室
倪正柱老師經十幾年之搜尋,於蕙蓀、草屯所找到的植株,該植株經由外
觀型態與命名文獻、標本比瓶之結果,葉緣為鈍鋸齒,花芽長12mm , 花
為總狀花序, 雄蕊數為20-22枚, 花柱 3∼4枚。果實直徑1.09 ±0.08 cm
,果實萼片脫落,因此該植株應為台灣野梨。該植株經由 Dr. Westwood
比對亦國國家種源庫中所保存的Pyrus oehnei 之植物性狀相同。另一方
面從美國國家種源庫中所引進之 Pyrusehnei、Pyrus calleryana進行生
化分析,在四種同功異構酵素經由比對的結果,證實台灣野梨與Pyrus
koehnei之類緣關係較為接近。另外,以PCR 之方法分析之結果可以確定
台灣野梨與 Pyruskoehnei之類緣關係相似。由生化分析之結果,可證明
蕙蓀林場植株與P.koehnei應為同一族群。有關台灣野梨之學名國內、外
的看法相當不一致,Hayata當初在本省發現認為是新種,因此命名為
Pyrus kawakamii,但從植株性狀及種源間之關係來看台灣野梨與Pyrus
koehnei相似。在雄蕊數、花柱數、萼片宿存與否 Hayata並沒描述。
Koidzumi 1913年認為台灣野梨應是Schneider 1906 描述之Pyruskoehnei
,經由外觀形態比對與生化分析的結果,我們認為台灣野梨學名為
Pyrus koehnei 而合併Pyrus kawakamii為其異名。

The Taiwan native pear ( Pyrus koehnei or Pyrus kawakamii ),
which is one of rare species due to great chance of grafting,
deforesting and hybridized by the introduced species, has
suffered the risk of genocide. Hayata (1911) found Pyrus
kawakamii in Nanto county. The specimen of P. kawakamii was
kept in Taiwan Forestry Research Institute. We found
that the characters of the specimen were different from the
descriptions of several literatures. Evenmore we couldn''t
find any native pear trees in the wkld all over the island.
Dr. Nee has taken ten yearsto look for it after Dr. Westwood''s
visit this island to get this evergreen pear in its native
locatio. Luckly, the suspected clones have been found in
Huey-Sun Forest area managed by National Chung Hsing
University. It is one of the most evergreen with leaf margin
coriaceous, style 3∼4, fruuit dimater 1.09 ± 0.08 cm, sepal
decidous, similar to the original specimen kept in Taiwan
Forestry Research Institute and Pyrus koehnei introdued from
pear germplasm repository in Covallis, OR USA. In addition to
morphological studies, biochemical analysis including isozymes
and polymerase chain reaction (PCR) had been used to identify
the suspected clones. Pyrus calleryana, Pyrus koehnei, Pyrus
pyrifolia, Pyrus communis and some local hybridis were also
test to verify the relationships among pear species. However,
we conclude that the evidences of botanical & biochemical
analysis support the suspected clones belong to the population
of P. koehnei.
URI: http://hdl.handle.net/11455/29336
Appears in Collections:園藝學系

Show full item record
 

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.