Nima Jaafari - Department of horticulture, Islamic Azad University, Karaj Branch, Karaj, Iran
Mohsen Kafi - Member of Scientific Board of Horticulture, Tehran agricultural University, Iran
Foad Moradi - Member of Scientific Board of Plant Physiology, Sapling and seed Institute, Karaj
Ebrahim Hadavi - Department of horticulture, Islamic Azad University, Karaj Branch, Karaj, Iran

Petroleum contamination of soil is a serious problem throughout the world and country specially sides of oil refinery like Khuzestan province of Iran. The soil contamination could damage the organisms of the soil, including plants and microorganisms. Some plants and microorganisms are able to degrade the oil in the soil. Two types of plants including legumes and grasses have higher potential to be used for phytoremediation. Since grasses used in landscaping to cultivate these plants could achieve two aims: first clean the soil second have a green space.In the present study, the effect of Crude Oil on underground organs of Frankenia Thymifolia yield on drought stress condition. A green house experiment was performed on Frankenia Thymifolia root yield to introduce this plant to spread the green space on contaminated and hot region with 384 treatments in eight repeats. Treatments have done on four levels of different rates of oil crude (0, 1%, 2% & 3% w/w) and four levels of Stress (no stress=FC, ¼ stress= 25%FC, ½ stress= 50% FC & ¾ stress= 75% FC). Treatments have effect on root biomass and dry mass that significant at (p<0.01). The efficiency of root was in level 3% oil pollution that increasing that traits than the non pollution about 74.6% & 81.1% respectively. But not similar results indicate from stress treatments. Interactive effect of crude oil and stress was significant at p< 0.01. The most wet and dry weight made from treatment of no stress and 3% oil pollution. With due attention to these results cultivate of Frankenia Thymifolia In addition to development of green space in pollution area with oil was so effective but not recommended in hot places.

Stress, Oil pollution, Green Space, Frankenia Thymifolia, yield