Responses of desert annual plants to ozone and water stress in an in situ experiment

被引：0

作者：

Bytnerowicz, A. ^{[1
]}

Olszyk, D.M. ^{[1
]}

Fox, C.A. ^{[1
]}

Dawson, P.J. ^{[1
]}

Kats, G. ^{[1
]}

Morrison, C.L. ^{[1
]}

Wolf, J. ^{[1
]}

机构：

[1] Statewide Air Pollution Research Center, University of California, Riverside, CA 92521, United States

来源：

Journal of the Air Pollution Control Association | 1988年 / 38卷 / 09期

关键词：

BIOMASS - Stresses - ECOLOGY - IRRIGATION - OZONE - Environmental Impact - SOILS - Moisture;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Desert winter annual plants growing on irrigated and non-irrigated plots were exposed in situ to elevated levels of ozone dispensed from an open air exposure system. Only three species were injured by ozone at the highest ozone concentrations. Leaf injury to Cammisonia claviformis - 2 percent total foliar injury (TFI), C. hirtella - 1 percent TFI, and Erodium cicutarium - 2 percent TFI, developed at the highest ozone concentrations. Leaf injury to these species was similar on the irrigated and non-irrigated plots. Leaf water potential and stomatal conductance significantly decreased in C. claviformis, and C. hirtella due to water stress but not ozone. Similar trend for net photosynthesis was also determined. The highest water potential and stomatal conductance values as well as the largest differences in water potential between irrigated and non-irrigated plants were found in the morning.

引用

页码：1145 / 1151

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