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

被引：23

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

页码：473 / 476

页数：4

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