Photosynthetica 2001, 39(1):123-126 | DOI: 10.1023/A:1012464523566

Photosynthesis, Transpiration, and Water Use Efficiency in Two Divergent Leymus Chinensis Populations from Northeast China

R.Z. Wang1, Q. Gao2
1 Laboratory of Quantitative Vegetation Ecology, Institute of Botany, Chinese Academy of Sciences, Xiangshan, Beijing, China
2 Institute of Resources Science, Beijing Normal University, Beijing, China

The net photosynthetic rate (PN), transpiration rate (E), and water use efficiency (WUE) of two divergent Leymus chinensis populations from the grassland region of Northeast China were compared. The two populations experienced the similar habitats, but differed in leaf colour, stomata numbers, and chlorophyll contents. The leaf PN for the grey-green (GG) population was greater than that for the yellow-green (YG) population, while the leaf E for GG population was lower than that for the YG population. The greater WUE for the GG population suggests that this type is more able to maintain higher PN under drought and is more fit for the rangeland use in this climate region.

Additional key words: grassland; physiological differences; plant water relations

Published: March 1, 2001  Show citation

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Wang, R.Z., & Gao, Q. (2001). Photosynthesis, Transpiration, and Water Use Efficiency in Two Divergent Leymus Chinensis Populations from Northeast China. Photosynthetica39(1), 123-126. doi: 10.1023/A:1012464523566
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