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Register a new userتأثير المعاملة بحمض الجبرلين والتسميد الازوتي في انبات بذور ونمو شتلات نوعين من اللوز البري
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Damascus University رسالة ماجستير
Publication date
2014
fields
Agricultural Engineering
and research's language is
العربية
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أجري هذه البحث في كلية الزراعة جامعة دمشق خلال الموسم الزراعي 2012-2013 بهدف دراسة تأثير بعض المعاملات في انبات بذور ونمو شتلات اللوز الكورشنسكي واللوز الشرقي
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References used
الريس رفيق 2000 التعرف بالأصول البرية للوز والفستق الحلبي أكساد دمشق 25 صفحة .
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تعد شجرة اللوز من الاشجار الهامة والمتميزة اقتصاديا في سوريا لأنها تعتبر الموطن الأصلي لشجرة اللوز . الشجرة متوسطة حساسة لدرجات الحرارة المنخفضة ولا تتحمل الرطوبة الزائدة لذلك تزرع في مناطق محددة من العالم
أجريت دراسة حقلية ( بساتين ) ونصف حقلية ( المشتل ) على غراس الحمضيات من صنفي أبو صرة ويافاوي حيث تم استخدام ثلاث مستويات من السماد الازوتي
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.
The effect of salinity and the treatment with fungicide on seed germination of Cupressus
sempervirens L. was investigated.
Five concentrations of salinity (0, 0.5, 1, 5 and 10%) were used. One part of the seeds was
treated with fungicides (Benomyl
), while the other part was germinated without fungicide
treatment. The results showed that seed germination was reduced by salinity, but the reduction was
more pronounced without fungicide and with salt concentration, the seeds didn't germinate at 5 and
10% NaCl.
Despite the decrease of germination indices with the increase of salt concentrations, the
statistical results didn't show significant differences in salinity concentrations and the control in
germination speed without fungicide, but they were significant with the fungicide. The statistical
results showed significant differences between the presence and absence of fungicide in all
treatments
نفذ البحث خلال عامي 2009-2010 في مركز أبحاث جامعة الفرات حيث زرعت بذور اربعة اصناف من النخيل ( البرحي- الخستاوي- المجهول - الزاهدي وذلك لمعرفة تأثير الإجهاد الجفافي والملحي في النسبة المئوية لانبات البذور
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