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Register a new userدراسة أولية للفطريات الجذرية (Mycorrhizas) في سورية
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للفطريات الممكرزة أهمية تطبيقية كبيرة و بخاصة فيما يتعلق بتحسين تغذية النباتات المضيفة بالعناصر المعدنية و زيادة مقاومتها للظروف البيئية المتطرفة من برودة و جفاف و ملوحة تربة، و مقاومتها للعوامل الممرضة. تعد مثل هذه الدراسات عن التعايش نادرة في سورية، لذلك فقد حاولنا دراسة هذا النوع من التعايش لدى بعض النباتات الاقتصادية في مناطق مختلفة في سورية ، و حاولنا تحديد الجنس أو النوع الفطري المسؤول في كل حالة، و ركزنا على بعض نباتات الفصيلتين السرمقية و الملفوفية، بعد أن أشار بعض الباحثين إلى عدم قدرة نباتات هاتين الفصيلتين على تشكيل فطريات جذرية.
No English abstract
References used
عيطة سوسن، ١٩٩٦ : التلوث الصناعي في حوض بردى . رسالة ماجستير- قسم علم النبات - كلية العلوم - جامعة دمشق.
The structure and function of mycelial systems of ectomycorrhizal roots with special reference to their role in forming inter-plant connections and providing pathways for assimilate and water transport
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أصبحت أهمية الفطريات الجذرية الحويصلية الشجيرية (Mycorrhizas Arbuscular Vesicular)
بالنسبة للنبات المضيف أمراً لا يقبل الجدل. و نظراً لأن مثل هذه الدراسات نادرة في سورية، فقد حاولنـا
متابعة ما سبق من دراسات، فدرسنا الواقع الميكوريزي لـ 51 نوعاً نبا
تياً ذات أهميةٍ اقتـصادية فـي
مناطق و ترب مختلفة. و ركزنا في دراستنا على بعض النباتات المائية و المحبة للرطوبة التي يصعب فهـم
أهمية مكرزتها، و على بعض النباتات البريوية و التريدية، و نباتات تعود للفصيلة الوزية و الملفوفية التـي
مازال الشك كبيراً في إقامتها لمثل هذه العلاقة التعايشية، و حاولنا تفسير النتائج الملاحظة و مقارنتها بما
توصل إليه باحثون آخرون.
According to the high specificity and sensitivity of ELISA test, we tried in
this preliminary study, to certify the usefulness of ELISA test in the detection of
specific antibodies (IgG) to cutaneous leishmaniasis(CL) in SYRIA, in order to
certify
the diagnosis of this disease by using the classic methods (observation
microscopic – culture).
This study is considered a newly addition and continuous survey to
Ascomycetes and Basidiomycetes which are importance in Barada basin
(Damascus district), it basically aims at knowing fungal biological communities
at framework of biodiversity and
ecological diversity in Syria. The study
extended from ١٩٩٦ to ١٩٩٩ years.
Researchers in this study confirm that there are representatives of ١٠
families out of which ١٦ genera has been specified which are distributed to ٢٦
species (٢٤ of them have been specified), and representatives of ١٣ families out
of which ١٨ genera has been specified which are distributed to ٢٧ species. The
places of spreading of each of them in its medium, most important
characteristics, which allow to distinguish it have been referred to, as well as to
the main practical importance, which describes it regarding the nutritive value
or to do environmental roles.
A survey of the natural enemies of woolly apple aphid Eriosoma lanigerum
(Hausm.) was conducted in unsprayed orchards in the mountain region of
Sweida, Syria. Twenty-six species were found, belonging to Coleoptera,
Dermaptera, Diptera, Heteroptera
, Neuroptera. Coccinella septempunctata L.
was the most abundant predator at the beginning of the season. The coccinellid
Oenopia conglobata (L.) occurred in less numbers and had a secondary
importance. Predatory bugs had a high activity in summer. Also, the aphelinid
parasite, Aphelinus mali (Haldeman), was observed with a high effectiveness at
late summer and at the end of the growing season.
This search shows the lithological, petrographical and physical properties of the dam,
and storage basin through rocks cors study taken from some wells in axis dam and storage
lake and surface samples therefore have shaped unpenetration and penetra
tion units. From
this study discern reduction degree pored with rise positions deep far from range
movement underground water and observed attachment pored grade cracs, Faults and
karstic, Karstic discerned in positions (campanian, turounian) Increase Karstic caves in
sinomanian positions from during tectonic cracs and naught being it in mastrichtian also
action space in area dry weathering above level underground water because movement
water across this cracs and vacuity.
Positions geological divided in location which credence at pored to three straps
(A, B, C):
A)-Hard weathering strap Positions assimilate in this strap cracs dense rocks advance
open cracs wobble between(3-5mm) and full of habit clay materials ,and compose dense
weathering strap assimilate pored rocks and area the thick (3-6m).and advance removal it
before starting in construction dam body because low resistance ,high cracs, capacity low
load
B) -Soft weathering strap Assimilate debris pile from split calcite rocks,and
compose penetrating rocks.
C) -Unpenetrating rocks strip Assimilate thick clay calcite positions from
unpenetrating rocks.
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