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pdfs/vol 61 1-6
4. 22-30p.pdf
ANTIOXIDANT ACTIVITY OF TOBACCO (Nicotiana
tabacum
L.) IN
INTOXICATION WITH HEAVY METALS
Lenka Cvetanovska¹, Gordana Dimeska¹, Marija
Srbinoska²,
Ivana Klincarska-Jovanovska ¹,
Svetlana Bozinovska 3,
Ana Cvetanovska ¹
¹Institute of Biology, Faculty of Natural
Sciences and Mathematics, 1000 Skopje,
Republic of Macedonia
²University”St.Kliment Ohridski”-Bitola,
Scientific tobacco institute-Prilep
3Postgraduate
student of Institute of Biology, Faculty of Natural Sciences and
Mathematics, Skopje
ABSTRACT
For determination of bio-physiological
parameters, fresh leaf material of two tobacco varieties
(Prilep P-156/1 and Yaka Yv-125/3) was used. Soil cultures were grown
in controlled experimental
conditions, in a glasshouse of the
Institute of Biology (Faculty of Natural Sciences and
Mathematics-Skopje). For each treatment ten plants were taken
and were treated with four concentrations of heavy metals: CuSO 4
x 5H2O
(0.25 mg/kg soil, 0.5 mg/kg soil, 1mg/kg soil, 5 mg/kg soil),
CdSO4
x
8H20
(0.1 mg/kg soil, 0.2
mg/kg soil, 0.4 mg/kg soil and 0.8 mg/kg soil), Pb(NO3)2
(50 mg/kg soil, 100
mg/kg soil, 200 mg/kg soil, 400 mg/kg soil)
and the excess concentration (unallowable for global
use) of
Antracol WP-70
(0.2
mg/kg soil, 0.4 mg/kg soil, 0.8 mg/kg soil and 1.6 mg/kg soil).
Antracol WP-70
is fungicide of the
dithiocarbamate group,
with zinc as its basic constituent. In the same time,
a trial with
control group of ten tobacco plants was set up. Of ten fully
matured leaves from lower, middle and
upper leaf belts was collected for analyses. All analysis was
performed in triplicate. For
the aim of this paper, leaves from the upper belt (III
insertion) were used. The accent was put on the
analyses
of chloroplast pigments content (spectrophotometric method of
Holm & Wettstein, 1958)
catalase activity (titrimetric
method of Bach & Oparin) and anthocyanins content (spectrophotometry
at 510 nm).
Key words:
intoxication, tobacco, heavy metals, fungicide, chloroplast
pigments
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