Ecophysiological and biochemical traits of three herbaceous plants growing on the disposed coal combustion fly ash of different weathering stage
2013
The ecophysiological and biochemical traits of Calamagrostis epigejos (Roth.)
Festuca rubra L. and Oenothera biennis L. growing on two fly ash lagoons of
different weathering stage (L1-3 years and L2-11 years) of the “Nikola Tesla-
A” thermoelectric plant (Obrenovac, Serbia) were studied. Species-dependent
variations were observed at the L1 lagoon; the greatest vitality (Fv/Fm and
Fm/Fo) followed by higher photopigment and total phenolic contents were
measured in O. biennis in relation to C. epigejos (p<0.001) and F. rubra
(p<0.001). At the L2 site, higher vitality was found in O. biennis (p<0.001)
and F. rubra (p<0.01) compared to C. epigejos. O. biennis had the highest
photosynthetic capacity. The results obtained in this study indicate that all
examined species maintained a level of photosynthesis that allowed them to
survive and grow under the stressful conditions in ash lagoons, albeit with
lower than optimal success. [Projekat Ministarstva nauke Republike Srbije,
br. 173018]
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