The
essential
oil
of
Rosmarinus
officinalis
L.
is
widely
used
as
a
folk
medicine.
In
this
study,
the
allelo-
pathic
activity
of
Dodonaea
viscosa
(aqueous,
and
acetone
extracts
0,
30,
60
and
100%)
on
R.
officinalis
L.
was
investigated
under
laboratory
conditions.
The
essential
oil
of
air-dried
samples
was
obtained
by
hydro
distillation
and
was
analyzed
by
gas
chromatography
(GC)
and
gas
chromatography/mass
spec-
trometry.
The
effect
of
the
of
D.
viscosa
on
the
chlorophyll
content,
photosynthetic
rate,
total
phenols
content,
proline
content,
and
chemical
composition
in
rosemary
was
evaluated.
A
significant
reduction
of
chlorophyll
content
and
photosynthetic
rate
was
observed.
On
the
other
hand,
an
increase
was
detected
in
the
total
phenols
and
proline
content.
Aqueous
extract
increased
the
1,8-cineol
content
from
4.6%
to
7.0%,
the
camphor
content
from
4.8%
to
8.9%
and
the
borneol
content
from
4.1%
to
7.2%.
As
a
result,
allelopathic
activity
of
D.
viscosa
on
rosemary
was
confirmed.
The essential oil of Rosmarinus officinalis L. is widely used as a folk medicine. In this study, the allelo- pathic activity of Dodonaea viscosa (aqueous, and acetone extracts 0, 30, 60 and 100%) on R. officinalis L. was investigated under laboratory conditions. The essential oil of air-dried samples was obtained by hydro distillation and was analyzed by gas chromatography (GC) and gas chromatography/mass spec- trometry. The effect of the of D. viscosa on the chlorophyll content, photosynthetic rate, total phenols content, proline content, and chemical composition in rosemary was evaluated. A significant reduction of chlorophyll content and photosynthetic rate was observed. On the other hand, an increase was detected in the total phenols and proline content. Aqueous extract increased the 1,8-cineol content from 4.6% to 7.0%, the camphor content from 4.8% to 8.9% and the borneol content from 4.1% to 7.2%. As a result, allelopathic activity of D. viscosa on rosemary was confirmed.
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