Growth responses and foliar sensitivities of native herbaceous species to ozone exposures

被引:36
作者
Bergmann, E
Bender, J
Weigel, HJ
机构
[1] Bundesforschungsanstalt für Landwirtschaft, Institut für Produktions- und Ökotoxikologie, Braunschweig, D-38116
关键词
ozone; native flora; premature senescence; growth foliar symptoms; seed production; Malva sylvestris;
D O I
10.1007/BF00477183
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This paper reports on open-top chamber studies investigating the effects of different O-3 exposures on native herbaceous plant species. Plants were grown up from seeds, potted into natural soils and exposed to near-ambient O-3 levels during one growing season. A wide range of visible symptoms was apparent during the exposures. Species such as Rumex obtusifolius, Senecio vulgaris or Sonchus asper showed leaf colorations (e.g reddish pigmentation) that probably indicate a non-specific stress response. In other species especially of the genera Malva and Cirsium the symptoms produced by O-3 appeared to be similar to those characteristic for O-3-specific foliar injury (stippling flecking). In almost all species tested O-3 caused premature leaf senescence, which was sometimes associated with premature leaf abscission. However, earlier senescence did not necessarily result in changes in plant growth Of all species tested, Malva sylvestris was found to be the most sensitive in terms of growth reduction and lower seed production.
引用
收藏
页码:1437 / 1442
页数:6
相关论文
共 7 条
[1]  
[Anonymous], AIR POLLUTION ECOSYS
[2]  
*CEC, 1993, 48 CEC AIR POLL RES
[3]  
CORNELIUS R, 1985, STAUB REINHALT LUFT, V45, P59
[4]  
FUHRER J, 1994, CRITICAL LEVELS OZON
[5]  
MORTENSEN L M, 1992, Norwegian Journal of Agricultural Sciences, V6, P195
[6]   THE RESPONSE OF NATIVE, HERBACEOUS SPECIES TO OZONE - GROWTH AND FLUORESCENCE SCREENING [J].
REILING, K ;
DAVISON, AW .
NEW PHYTOLOGIST, 1992, 120 (01) :29-37
[7]  
WEIGEL HJ, 1988, LANDBAUFORSCH VOLK, V38, P103