台灣固有植物光合作用多樣性研究
Date Issued
2005
Date
2005
Author(s)
DOI
932621B002019
Abstract
Recently, carbon isotope ratio analyses have shown great promise for use as a tool to
understand integrated plant behavior. For example, analysis of 13C ratio of plants
has been widely used to identify photosynthetic pathways and to compare the
long-term photosynthetic water use efficiency. There are 1067 species of endemic
plants in Taiwan. Their photosynthetic performance has not been thoroughly
characterized. Thus, the long-term goal of my study is to understand the
photosynthetic characteristics of these endemic plants, especially those distributing
at high elevations. In this preliminary study, the 13C of endemic plants were
analyzed. The specific objective was to determine the presence and abundance of C3,
C4 and CAM photosynthetic pathways in endemic plants. The 13C values of
samples analyzed vary from -34.5 to -10.8 ‰ which can be classified into three
groups. One group of samples had 13C values between -34.5 to –25.1 ‰,
indicating C3 plants, samples in the 2nd group between -14.8 to –10.8 ‰, indicating
C4 plants, and those of the 3rd group, Bulbophyllum albociliatum and B.
melanoglossum, were -20.2 and -20.6 ‰, indicating CAM plants.
Subjects
endemic species
photosynthetic pathway
stable carbon isotope ratio
Publisher
臺北市：國立臺灣大學生命科學系
Type
report
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