In:
Bulletin of the Faculty of Forestry, National Library of Serbia, , No. 110 ( 2014), p. 145-157
Abstract:
Some heavy metals such as Zn are essential micronutrients for plants.
However, in a high concentration in soils they could cause repression of
growth with toxicity symptoms. It is therefore very important to investigate
the species that are tolerant to high concentration of zinc which have the
ability to survive on soils contaminated with heavy metals. This paper
presents an investigation of the effect of elevated Zn concentrations on the
germination and seedling growth of the invasive tree species Ailanthus
altissima (Swingle) Mill., aimed at a better understanding of its adaptation
ability to heavy metal stress and potential use in phytoremediation. Seeds of
Ailanthus altissima were treated with Zn concentrations of 25, 100 and 250 ?M
in form of zinc sulfate. After germination, the seedlings at the stage of
first leaf development were transferred into a growing chamber in the
hydroponic system where zinc sulfate was added in the concentrations of 100,
250 and 500 ?M. The results showed that Zn treatments, including the highest
concentration, have caused a reduction in seed germination parameters.
Considering the hypocotyl and radicle length, there was no significant
statistical difference among the treatments, but further growth of young
seedlings in hydroponics under high concentrations of Zn, cause an inhibition
of the root system growth and repress development of assimilating organs.
Seeds and seedlings of A. altissima are tolerant to elevated Zn
concentrations at early stages of development. However, later on with leaves
development, the inhibitory effect of the strongest concentrations is
expressed.
Type of Medium:
Online Resource
ISSN:
0353-4537
,
2217-8600
Language:
English
Publisher:
National Library of Serbia
Publication Date:
2014
detail.hit.zdb_id:
2585444-6
SSG:
23
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