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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
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
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
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
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
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.
Appears in Collections:園藝學系

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