biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 50:737-740, 2006 | DOI: 10.1007/s10535-006-0119-9

Photosynthetic characteristics and growth of Mosla hangchowensis and M. dianthera under different irradiances

J. -X. Liao1,2, Y. Ge1,2, B. -H. Guan1,2, Y. -P. Jiang1,2, J. Chang1,2,*
1 College of Life Science, the State Key Laboratory of Plant Physiology and Biochemistry, Zhejiang University, Xixi Campus, Hangzhou, P.R. China
2 Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, P.R. China

The photosynthetic and growth characteristics of Mosla hangchowensis, an endangered species and M. dianthera, a weed, were compared under three irradiances (PPFD) similar to shaded forest understory, forest edge and open land. Both species grown at lower PPFD had lower PPFD-saturated photosynthetic rate (Pmax), saturation PPFD, compensation PPFD, apparent quantum yield, total mass and root/shoot ratio and higher specific leaf area, leaf area ratio and height ratio. At the same PPFD treatment, however, specific leaf area and leaf area ratio of M. hangchowensis were higher than those of M. dianthera, other above parameters were lower than those of M. dianthera. Water use efficiency did not differ between M. hangchowensis and M. dianthera, but it reached its maximum at 70 % of full PPFD. These results suggested the optimum habitat of M. hangchowensis is the forest edge.

Keywords: apparent quantum yield; net photosynthetic rate; radiant energy utilization; root, shoot ratio; water use efficiency
Subjects: gas exchange; growth analysis, plant development, biomass and yield enhancement; Mosla dianthera; Mosla hangchowensis; (photosynthetic) photon flux density; quantum yield; transpiration rate; water use efficiency (WUE)

Received: December 17, 2004; Accepted: June 2, 2005; Published: December 1, 2006  Show citation

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Liao, J.-X., Ge, Y., Guan, B.-H., Jiang, Y.-P., & Chang, J. (2006). Photosynthetic characteristics and growth of Mosla hangchowensis and M. dianthera under different irradiances. Biologia plantarum, 50(4), 737-740. doi: 10.1007/s10535-006-0119-9
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