عنوان مقاله [English]
Mycorrhiza is the most common symbiosis in vascular plants and it has different types. Jujube tree (Ziziphus jujuba mill) is a profitable plant, which is native to Iran and is cultivated mainly in south khorasan province. Due to the effects of mycorrhiza on vegetation and geographical spreading of plants, as well as lack of information on this type of symbiosis, the present study was carried out in order to identify of mycorrhiza symbiosis in Birjand. More over because of the positive effect of mycorrhizal symbiosis on plants yield under stressful environmental circumstances, the mycorrhizal symbiosis interactions and the age of jujube tree were studied under farm the presence of situation in factorial plans based on blocks. The findings indicated the presence of genus Glomus, particularly Glomus coronatum (Glomaceae), form vesicular-arbuscular mycorrhiza (VAM). Furthermore, considering the quantity of mycorrhiza, the results showed a meaningful and considerable difference amoung three age groups of plants: (7-10, 15-17 and 25-28). The quantity of mycorrhiza was the most in 25-28 year old trees. Therefore mycorrhizal development and application of agricultural management policies to stimulate and promote interactions of this plant, would provide a proper developmental pattern for sustainable farming of jujube tree and would be in keeping with principles of conventions on biological diversity and sustainable development.