This current study was carried out on B41 grape rootstock
micropropagated in vitro at the General Commission for Scientific Agricultural
Research (GCSAR), Syria to study the effect of different concentrations of
sodium chloride on the multiplicati
on and rooting stages. The results showed
that the highest average of survival plants (98%), the number of new buds
(8.43) and plant length (8.58 cm) were obtained in the control treatment after 4
weeks from multiplication stage. The treatment with 50 mM of sodium chloride
led to reduce the multiplication rates with significant differences, while the
lowest plant multiplication had occurred with 100 mM of sodium chloride and
no survival plants were remained by the treatment with 150 mM of sodium
chloride during multiplication stage. The highest rooting rates (% 85.30), the
number of roots (4.67) and root length (6.28 cm) were also obtained in the
control treatment after 4 weeks from rooting stage. The treatment with 50 mM
of sodium chloride led to reduce the rooting process with significant
differences. The lowest rooting results were observed with 100 mM of sodium
chloride and no rooting rate was observed when plants were treated with 150
mM of sodium chloride.
This current study was conducted on gardenia plant (Gardenia
jasminoides.L.) cv. ellis. which was micropropagated in vitro to study the effect
of some plant growth regulators on multiplication and rooting, for the aim of
developing a complete in v
itro microprpagation system of the studied cv.
Results demonstrated that, the best medium for in vitro micropropagation of
the studied cv. was MS medium supplemented with 1 mg/L BA + 0.1 mg/L IBA
with a multiplication rate of 5.33 new shoots, with average shoot height of 4.73
cm, and average leaf number of 4.36. These shoots were then transferred to a
rooting media containing a half-strength of the multiplication basal media with
NAA at a concentration of 1mg/L which resulted in highest rooting efficiency of
97% with average root number of 9.67, and average root length of 5.35 cm, and
average stem length of 9.80 cm, and average leaf number of 5.07. Increasing
NAA concentration in rooting media to 1.5 mg/L resulted in increasing root
length average to 6.28 cm with significant difference in comparison to the
previous treatment. Rooted Plantlets were acclimatized gradually in a growth
room conditions to ex vitro conditions with 85 % efficiency.
Studying of using of semi-hardwood cuttings that were got from
different ages for Magnolia gradiflora L. trees: Young trees that are
15 years old, middle-aged trees that are 30 years old, and only one old
giant tree which is 110 years old were per
formed by treating the
cuttings with Indole Butric Acid Rooting Hormone 2000 P.P.M. which
was used during three periods of time: 10, 20 ,and 30 seconds under
green house conditions.
The study showed that IAA treated cuttings were rooted earlier and bud
development was delayed. On the other hand, IAA treatment increased rooting
percentage and reduced the percentage of bud development. Increasing
NaCl salinity to ٠,١ M decrease
d the rooting ability in cuttings, while the
use of IAA could mitigate the adverse effect of salinity. The best results of
rooting were obtained in treatment of (٠,٠٥ M).
Studying of using of semi-hardwood cuttings that were got from
different ages for Magnolia gradiflora L. trees: Young trees that are
15 years old, middle-aged trees that are 30 years old, and only one old
giant tree which is 110 years old were per
formed by treating the
cuttings with Indole Butric Acid Rooting Hormone 2000 P.P.M. which
was used during three periods of time: 10, 20 ,and 30 seconds under
green house conditions.
In vitro rooting was significantly increased by adding indolebutyric
acid (IBA) to medium and rooting was improved by adding ١,٠ g/L activated
charcoal or ٠,١ g/L polyvinylpyrrolidone (PVP). Indoleacetic acid (IAA) (٠,٠ to
٤,٠ mg/L) was not effect
ive for rooting except when used with ٠,١ g/L PVP. A
٩٥٪ survival was achieved when plants were acclimatized ex vitro. Such
procedures could help significantly in clonally propagating bitter almond and
conserving its germplasm.
Jasminum sambac, or Arabian jasmine is one of the most important
Jasminum species in perfume industry. It is an ornamental evergreen erect
shrub. Flowering date starts from the early May till the end of October. Syrian
climate is very suitable for
the growth and the flowering of the shrub, therefore
the study was carried aut to investigate the effect of some major factors on
rooting of semi-hard wood cuttings.
The present study was conducted on aerial offshoots of date palm
Berhi cultivar after separation from their mother trees, their bases were
dipped in solution of plant growth regulator (IBA).
A study on the propagation of female kiwi trees (Hayward variety) by wooden
cuttings, using plant growth regulators, was conducted at Latakia Agricultural
Research Centre during the seasons 2009, 2011 and 2012. Two dates for collecting
cuttings (J
anuary and February) from kiwi trees which were selected. On each date,
the cuttings were divided into three groups according to cutting location on the
shoot (basal, middle and apical). The NAA and IBA growth regulators were applied
at several concentrations, in addition to two treatments of the mixture of both growth
regulators.