| dc.description.abstract | This
study
was
undertaken
to
investigate
the
effect
of
AccelTM,
sucrose
and
silver
thiosulphate
(STS)
on
the
dry
weight,
accumulation
of
sucrose
and
reducing
sugars
in
cut
tuberose
(Polianthes
tuberosa
L)
petals
at
various
positions
along
the
spike.
Cut
stems
of
Tuberose
were
held
in
optimum
treatments
that
prolonged
their
vase
life
(Hutchinson
et
al.,
2003):
continuous
holding
in
25
mg/L
BA
equivalent
of
Accel;
pulsing
in
20%
sucrose
for
24
hrs
and
subsequently
holding
in
either
deionized
water
(DIW)
or
in
25
mg/L
BA;
pulsing
in
2
mM
STS
for
1
hr
and
subsequent
holding
in
DIW.
The
middle
and
bottom
florets
of
cut
flowers
held
in
DIW
were
heavier
than
the
top
florets.
Pulsing
tuberose
cut
flowers
in
sucrose
or
in
STS
improved
the
dry
weights
of
the
middle
and
bottom
florets
in
the
1
st
3
days
but
up
to
6
days
of
top
florets.
Florets
of
cut
flowers
pulsed
in
sucrose
and
subsequently
held
in
Accel
were
heavier
than
those
subsequently
held
in
DIW
or
those
held
continuously
in
Accel.
Sucrose,
STS
and
Accel
,
increased
floret
opening
but
had
varied
influence
on
the
accumulation
of
sucrose
and
reducing
sugars
in
pe,tals
of
florets
along
the
spike.
Cut
tuberose
stems
pulsed
in
sucrose
and
subsequently
held
in
either
DIW
or
25
mg/L
BA
equivalent
of
Accel
accumulated
the
largest
amounts
of
sucrose
and
reducing
sugars.
Pulsing
cut
tuberose
flowers
in
10%
sucrose
and
subsequently
holding
them
in
Accel
or
DIW
or
pulsing
in
STS,
while
having
no
influence
on
sucrose
levels
in
bottom
t}orets,
significantly
increased
levels
in
top
florets
for
the
1st 3 days
before
a
sharp
decline
in
petals
pulsed in sucrose.
The
main
difference
was
that
while
most
of the
sucrose
accumulated
in
the
middle
florets,
reducing
sugars
was
concentrated
on
the
bottom
florets
along
the
spike.
Unexpectedly,
pulsing
stems
in
STS
or
holding
them
in
Accel
had
no
significant
influence
levels of sucrose
or
reducing
sugars
within
the
9
days
of
testing
even
though
most
florets
had
opened
by
this
time.
The
results
of
the
present
study
suggest
that
while
sucrose
had
a
direct
influence
on
accumulating
of
sucrose
and
reducing
sugars
in
florets,
Accel
and
STS
improved
vase
life
and
floret
opening
'in
cut
tuberose
stems
either
indirectly'
through
substrate
mobilization
and
increased
metabolism
or
may
have
played
another
different
role
other
than
substrate
mobilization | en |
