Biometrical Letters vol. 47(2), 2010, pp. 147-154
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STUDY OF OZONE-CAUSED LEAF INJURY DEGREE IN DIFFERENT PHYSIOLOGICAL PHASES OF TOBACCO PLANTS EXPOSED TO AMBIENT AIR CONDITIONS Anna Budka1, Klaudia Borowiak2, Dariusz Kayzer1, Janina Zbierska2 1Department of Mathematical and Statistical Methods, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznań, Poland, e-mail: budka@up.poznan.pl; dkayzer@up.poznan.pl; 2Department of Ecology and Environmental Protection, Poznan University of Life Sciences, Piątkowska 94C, 60-649 Poznań, Poland, e-mail: klaudine@up.poznan.pl; jzbier@up.poznan.pl; |
An ozone-sensitive cultivar of tobacco plants was exposed at two sites - urban and rural - for eight weeks in the 2008 growing season. Visible injuries caused by tropospheric ozone were measured every two weeks of the experiment. The differences in damage at every two-weekly observation are presented here. Three different ozone injury indexes were examined to establish the future usefulness of one of these indexes in similar tropospheric ozone bioindicative investigations. For this purpose the T2-test for equality of mean vectors method was applied. The calculations revealed the most suitable index for this kind of investigation, taking account of five maximum values for leaf injury on each plant exposed at an individual site.
Hotelling's T2 test, leaf ozone injures, tobacco plants
