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- Title
Photosynthetic Parameters of Mosla hangchowensis and M. dianthera as Affected by Soil Moisture.
- Authors
Ge, Y.; Lu, Y.-J.; Liao, J.-X.; Guan, B.-H.; Chang, J.
- Abstract
We compared the photosynthetic traits in response to soil water availability in an endangered plant species Mosla hangchowensis Matsuda and in a weed Mosla dianthera (Buch.-Ham.) Maxim. The highest diurnal mean net photosynthetic rate ( PNmean), stomatal conductance ( gs), and water use efficiency (WUE) of both species occurred at 60 % soil water holding capacity (WHC), while the lowest values occurred at 20 % WHC. The PNmean, gs, and chlorophyll (Chl) a and b contents of M. hangchowensis were lower than those of M. dianthera, while the physiological plasticity indices were higher than those of M. dianthera. M. hangchowensis had strong adaptability to the changing soil water status but weak extending population ability in its habitats because of the low PNmean, which may be one of the causes of its endangerment.
- Publication
Photosynthetica, 2004, Vol 42, Issue 3, p387
- ISSN
0300-3604
- Publication type
Article
- DOI
10.1023/B:PHOT.0000046157.50624.61