Stomatal limitation of photosynthesis as affected by water stress and CO2 concentration

被引：22
|
作者：
Janacek, J [1 ]
机构：
[1] Res Inst Plant Prod, CZ-16000 Prague 6, Ruzyne, Czech Republic
来源：
PHOTOSYNTHETICA | 1997年 / 34卷 / 03期
关键词：
irradiance; photon fluence density; stomatal conductance; transpiration; water potential;
D O I：
10.1023/A:1006880521888
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
A water stress effect on photosynthesis and transpiration of wheat seedlings at 50-500 mu mol(CO2) mol(-1) was measured in an open gas exchange system. The limitation of photosynthesis by stomatal conductance was quantified by a stomatal control coefficient of the net photosynthetic rate. The stomatal control coefficient increased linearly as the water potential of root media decreased to -1 MPa, and it decreased with increasing CO2 concentration.
引用
收藏
页码：473 / 476
页数：4
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