Effects of water stress and high temperature on gas exchange and chlorophyll fluorescence in Triticum aestivum L.

被引：67

作者：

Hassan, I. A. ^{[1
]}

机构：

[1] Univ Alexandria, Dept Bot, Fac Sci, Alexandria 21526, Egypt

来源：

PHOTOSYNTHETICA | 2006年 / 44卷 / 02期

关键词：

grain yield; intercellular CO2 concentration; quantum efficiency of photosystem 2; spikelet; stomatal conductance; yield;

D O I：

10.1007/s11099-006-0024-7

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Wheat plants grown in controlled growth chambers were exposed to drought stress (DS) and high temperature (HT) singly and in combination (DS+HT). The effects of these two stresses on net photosynthetic rate (P-N), stomatal conductance (g(s)), intercellular CO2 concentration (C-i), quantum efficiency of photosystem 2 (phi(PS2)) variable to maximum chlorophyll (Chl) fluorescence (F-v/F-m), photochemical (q(p)) and non-photochemical (NPQ) Chl fluorescence, and yield were investigated. Grain yield was decreased by 21 % due to DS, while it was increased by 26 % due to HT. P-N, g(s), C-i, and Chl fluorescence were dramatically reduced to DS, HT, and their interaction, except NPQ which showed an increase due to HT.

引用

页码：312 / 315

页数：4

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