أجريت هذه الدراسة في عشر مواقع متفاوتة الارتفاع عن سطح البحر تمثل بعض المواقع الذي يوجد فيها نوع الدبق بشكل مبعثر Cordia myxa Forsk. كنوع مدخل إلى المنطقة الساحلية في محافظة اللاذقية خلال عامي 2010–2011 م، هذا البحث أظهر تأثير الارتفاع عن سطح البحر على الأشجار المدروسة في المواقع المختلفة و ظهرت فروق معنوية في الصفات المتعلقة بمتوسط كل من: ارتفاع الأشجار ، طول عنق الورقة ، طول العنقود الزهري ، التغطية الشجرية ، الوزن الرطب و الجاف للأوراق ، وزن الثمار، بينما لم يظهر أي تأثير للارتفاع عن سطح البحر و لم يلاحظ وجود فروق معنوية في الصفات المتعلقة بمتوسط كل من : أقطار الأشجار،عدد الأغصان الرئيسية ، طول الجذع الرئيسي ، عدد الزهيرات في النورة ، طول الورقة و عرضها، مساحة سطح الورقة، الرطوبة النسبية للأوراق و أخيراً بداية الإزهار و مدة الإزهار. و من هنا يمكن الاستنتاج بأنه توجد تغيرات طفيفة في الصفات الشكلية في الأشجار المدروسة في المواقع المختلفة تبدو و كأنها مؤشر أولي لتأثير الارتفاع عن سطح البحر على تغيرات بعض الصفات الشكلية لنوع الدبق.
This study was carried out in nine sites of various altitudes. The sites represent
scattered zones of Cordia myxa Forsk. as an introduced species in the coastal region,
Lattakia governorate during 2010-2011. The research showed that there is an effect of
altitude on the investigated trees in the different sites, and that there were significant
differences in relation to the characteristics of the average of the following: tree height,
length of leaf stalk, catkin length, canopy, fresh and dry leaf weight, and fruit weight.
However, there were no effects of altitude on the species. There were also no observed
significant differences in relation to the characteristics of the average of the following: the
tree diameter, trunk length, flower number in one catkin, leaf length, leaf width, leaf area,
leaf humidity percentage, flowering start, and flowering period. It can be said that there
were changes in the morphological characteristics of the studied trees in the different sites,
which appeared to be a preliminary indication of the impact of altitude on the variations of
some morphological characteristics of Cordia myxa Forsk.
References used
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CRONQUIST , A . , An integrated system of classification of flowering plants, Columbia University Press , N . Y. 1981
CHALABI M. N. , Analyse phytosociologique , phytoecologique , dendrometrique et dendroclimatologique des fortes de Quercus cerris subsp. Pseudocerris et contribution a l etude taxonomique du genere Quercus L. en Syrie , These de Doctrat es – sciences , Universite d Aix-Marseille III , 1980 342 p. + annexes de 171p
This study was carried out during 2014-2015 in two different nurseries located in
University nursery (Lattakia governorate) and Salhab nursery (countryside of Hama
governorate). Seeds were taken from two sites of Lattakia governorate (Mashqita– Bsn
At this study, two species of genus Equisetum L. have been recorded, that they were: Equisetum telmateia L. and Equisetum ramosissimum Desf.
E. ramosissimum Desf. was recorded for the first time in Lattakia.
The morphological features were used to
At this study, two species of genus Equisetum L. have been recorded, that they were:
Equisetum telmateia L. and Equisetum ramosissimum Desf.
E. ramosissimum Desf. was recorded for the first time in Lattakia.
The morphological features were used to
The aimsof this research were to morphologically characterize 27 local genotypes of
tulip,to evaluate the genetic variability between them using 32 morphological traits, and to
determine their chromosomal number.
The results allowed the distinctio
Family Vespidae considered as Widespread globally and belong to the order
Hymenoptera called wasps, It contains about 5000 species belong to six subfamilies.
Members of this family differ in terms of style of living and life cycle and the type of