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Register a new userThe effect of Auxin Naphthalene acetic acid (NAA) on rooting of Gardenia jasminoides
تجذير عقل الغاردينيا Gardenia jasminoides المعاملة بأوكسين نفتالين حمض الخل NAA
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Damascus University ورقة بحثية
Publication date
2003
fields
Groves
and research's language is
العربية
Authors
عدنان الشيخ عوض( باحث )
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يعد نبات الغاردينيا Gardenia jasminoides من نباتات المناطق الحارة و شبه الحارة، و لهذا النبات أهمية كبيرة. أجري البحث في ظروف مخبرية ثابتة، فقد أجريت الدراسة في ظروف البيت الزجاجي رقم 5 في المعهد العالي للبستنة – فرع نباتات الزينة في برلين – حيث استخدمت عقل مستوردة من الدنمارك بعد تخزينها في جو من الرطوبة النسبية العالية تصل إلى 100-95% .
Gardenia jasminoides is considered as a plant of tropical and suptrofical regions. This plant has a great importance in Germany and Syria. Despite that this research has been done in Germany, it is possible to generalize it for Syria as it was conducted in stable laboratory conditions. The experiment was conducted in the environment of greenhouse no. 5 at the Higher Gardening Institute- Branch of Ornamental plants in Berlin. Cuttings imported from Denmark were used after being stored in an atmosphere of high relative humidity reaching 95-100%.
References used
Al-ATRACHII,A.O1993." Propagation of Gardenia in Vitro. Journal of Agriculture ", vol.25 (No.3) p.47-52
BOWBRICK: P. KELLY; J.C.LAMB J.G.D (1975). Propagation and treatments Grower Box London,p:75
ECONOMOU, A. S; SPANOUDAKI, M. J1985;'' Invitro propagation of Gardenia. Horticultural Science'; April, vol. 20(2)p.213
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The search carried out in Homs Agricultural Scientific
Research Center on the field of Eriobotrya Japonica during 2013
and 2014 using the naphthalene acetic acid (NAA) on two cultivars
of Eriobotrya Japonica of Cypriot origin (Karantoki and Morfou
)
growth on the native rootstocks and reduce fruit setting percentage,
the age of the trees 15 years, has been used material NAA
concentration 20 - 40 ppm.
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.
Semi-wooden cuttings of two - jujuba cultivars were vegetitirely propagated
under greenhouse conditions, by using different concentrations of Indole
butyric acid (IBA), at Hanadi Research Station, Lattakia.
The rooting percentage reached 71.3% aft
er two months for the Ziziphus
jujube mill, and 83.3% for the Ziziphus jujube tayan tsizao, when they were
treated with 4000 mg/L of (IBA) for five seconds while the rooting percentage
was zero for the non-treated cuttings (Control) .
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).
This study was conducted at the laboratories of Food Science Department at
the Faculty of Agriculture, Damascus University in order to study the
possibility of prolonging the shelf life of chicken breast by vacuum packaging
and treating with aceti
c acid. Chicken breasts were immersed into a solution
having 1% or 2% of acetic acid concentration for 30 sec. and packaged with
vacuumed and not vacuumed sacs. Samples were preserved at 4±1 ºC for 21
days and examined after 0, 7, 14 and 21 days of refrigeration for
microbiological, chemical and sensory properties. Microbiological analyses
included determination of total count of bacteria, coliforms, Salmonella,
anaerobic bacteria, Pseudomonas, yeasts and molds. Chemical analyses
included determination of pH value and non-protein nitrogen. Sensory
properties were evaluated for color, smell and texture. Results revealed that
samples immersed into a solution with 1% and 2% of acetic acid concentration
had affectively improved quality and sensory properties of chicken breast for
more than 14 days compared with control samples and the samples treated by
2% of acetic acid with vacuum packaging had the best quality results.
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