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Register a new userThe effect of Polluted Air on Alfalfa
تأثير الهواء الملوث في الفصة
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زرعت الفصة الصنف المحلي local.var.l sativa Medicago (من الفصيلة الفولية) و بمعدل عشرة أصص في كل موقع: الموقع الأول الأكثر تلوثاً في باب توما، و الموقع الثاني متوسط التلوث فـي جـسر فكتوريا، و الموقع الشاهد في داريا غربي دمشق, و قيست درجات الحرارة و معـدلات الرطوبـة و تراكيـز بعض ملوثات الهواء الأساسية في مواقع الدراسة. تبين النتائج أن الهواء الملوث يؤثر في النباتات إذ ينخفض طول النباتات و نموها، و محتوى الأوراق من اليخضور, و الإنتاجية, و عدد الأزهار و القرون و مساحة المسطح الورقي, فـي المـوقعين الملـوثين مقارنة مع الموقع الشاهد.
Cultivars of Medicago Sativa l.var local were planted in three locations, ten pots per location. The first location wich is the most polluted one is (Bab Toma), second polluted one is (Jeser Victoria), and the reference location is (Daria), in the west of Damascus. Temperature, relative humidity and concentrations of main pollutants in that three locations were measured. Resultes showed that air pollution decreased growth of plants, amount of chlorophyll, production of plants, number of flowers, number of pods and leaf area in comparison with reference location.
References used
Agrawal, S. B., Agrawal, M., (1999). Environmental pollution and Plant Responses, Department of Biological Sciences, Allahabad, India
Ahmad, M. (1999). The effect of air pollutants of Arak Aluminium factory on growth and development of certain species of Leguminoseae. Dep. Of Biology, Faculty of Sciences, Tarbiat Moalem University. Tahran – Iran). Supreme Council of Sciences. 39 th Science week. 1999. Damascus. University of Damascus
Bell, J. N. B., (1986). Book, Direct Effects of Air Pollutants in the Atmosphere and on Plants. Department of Pure and Applied Biology, Imperial College of Science and Technology , Silwood Park, Ascot, Berkshire SL5 7Ph, United Kingdom
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The study assure heavy effect of harmful machines waste matter on leaves
cell structure of some plants which grow at conditions of Damascus city, were
cause to anormality of cell form and protoplasm degradation. Jasminum is less
effected with pollutants than Citrus aurantium.
The influence of vesicular - arbuscular Mycorrhiza fungi (VAM) on
symbiotic fixation of N٢ in alfalfa plants has been observed. Beneficial effects of
VAM plants in saline soil are of great interest. The aim of this work was to
study the effect of
VAM or phosphorous fertilization on alfalfa (Medicago
sativa L.) yields, number of nodules and N٢ fixation by N١٥ isotope dilution at
different salinity levels.
The research was conducted to study the resistance of Nerium plant which are planting on
sides of roads and the cities portals. The research was performed by studying the leaves of
Nerium plant, through studying the length and weigh of the leaf, an
d its area and water
content. In addition to studying the wools and hiatus and chlorophyll concentration, and
compared the results between the polluted region which is the entry of Banias City, and the
control one which is the gardens of Tishreen University.
Results showed non significant reduction in length, weight and area of the leaf in the
polluted region compared with the control one. It attained (16.2 cm, 0.97 g and 26.3 cm2),
respectively in the polluted region. Where it was (17.8 cm, 1.25 g and 27.7 cm2), for
control region, respectively. Also, there was no significant differences in water content
between the two studied regions. It attained respectively (52.2 and 53.9 %).
Our results showed:
- That a number of hiatus decreased, whereas the wools increased in the polluted region
compared with control region insignificantly. The mean of a number of it was 12 in
polluted region, compared with 14 in the control region.
- A simple insignificant reduction in the concentration of chlorophyll A in polluted region
compared with the control, where it attained (0.93 and 0.98), respectively.
The Nerium oleander plant was resistance and tolerance to the air pollution.
The study development of diffusion flame has special importance in applications and industrial burners.
For achieving this aim, a diffusion burner was manufactured from Steel metal and three models of bluffbodies
were prepared with different engineering shapes: Diverge inside outside bluff-body, Rods bluff
body, and Combined bluff-body.
In addition, designing and building of integrated experimental system with group of control systems for
supply fuel and air flow are described. On the other hand we prepared system of Schieren Photography
and measured length of Diffusion Recirculation flame and obtained good results in field of reaction and
diffusion through analyzing Schieren Photography for flame front. The obtained results (Hvorticity =54
mm and Wvorticity= 52.5 mm) result widened stability range of flame front.
Effect of vorticity and diffusion was studied of soot free length fraction (SFLF) and considered as an
important parameter in industrial applications for burners, leading to reductions in pollution and
poisonous gas emission. The results (SFLF=0.2) are achieved for the first time in comparison to results of
literature review.
This study has conducted to investigate the effect of air pollution on diagnostic elements and morphologicl characters of leaves of Neruim oleander Cultivated in roadsides in Lattakia City . Samples were collected from tow sites differ in pollution
inteusity between october 2012 and september 2013 .
The first site ( Al Jmhoria street in Lattakia city ) was more polluted and has more traffic activity .
Whil the second site ( tishreen University park )
Was Less polluted and less traffic activity .
The results have showed that the length , the weight and the colour of the leaf are negtively incieased because of traffic intensity and this , inturn , affects the shape , the size and the number of diagnostic elements which play animportant rule in differentation the species from each other .
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