ارزیابی جوانه زنی و خصوصیات مورفولوژیک گیاهانی از خانواده‌ی Asteraceae در پاسخ به آلودگی ترکیبات نفتی

These days petroleum pollution is one of the most serious problems, especially in areas around the oil rich regions. The use of plants to remove petroleum compounds appeared as a promising option in the extraction of these compounds from soil and water. So, to estimate and evaluation the ability of some Asteraceae species (Sunflower, Lettuce, Artemisia and Achille) to up take and remediate phenantherene, a kind of polycyclic aromatics hydrocarbons (PAHs), some experiment was done on tissue culture lab Iranian Biological Resources Center in 1391. In this study four phenantheren concentration (0, 100, 1000 and 3000 ppm) were used in In-vitro culture. This research was done with four replications in factorial experiments, randomized complete design. Results showed a significant reduction in growth and germination percentage in response to increasing the phenantherene concentration. Growth indices, including plant height, leaf number, wet shoot weight, root length, root number and wet root weight showed a decreasing trend. Increasing contaminate concentration to 3000 ppm, stoped growth after germination stage, and even were completely destroyed before harvest in twelfth weeks. Except check treatment, maximum weight and length of shoot and root was showed in 100ppm concentration. Among plants, lettuce had higher growth than other species.