Investigation of the effect of mycorrhizal and silicon on deacreasing water consum on Cucumber sativus hydroponical culture

Drought is a major factor that limiting plant growth. Mycorrhizal fungi can modified and improved water relation and drought stress with phosphorus and water absorption. In the other hand،Silicon is known as a positive factor that improved water and soil relation and reducing biotic and abiotic stress in some plants and resistant them against stress. Since the cucumber plants in early phase of growth need high water and dehydration can seriously reduce the performance of the excessive use of water in greenhouse cultures and fungal diseases. Therefore، the purpose of this research is investigation of mycorrhizal fungi and silicon in cucumber culture and water deficit. Thus، a factorial experiment based on completely randomized design with four replicates and 3 treatments (silicon 2/0 mM، arbuscular mycorrhizal fungi (Glomus intraradices) and dry growing conditions) in the greenhouse were conducted on cucumber plant. The results showed that mycorrhizal fungi alone and with dry stress significantly increased phosphorus content in fruits، roots and leaves of the plant in. The content of proline، soluble sugar and reduced sugar increased in dry treatments. In plants that treated with silicon and dry the amount of sugar in fruits، leaves and roots increased significantly at 5% level. In mycorrhizal plant soluble sugar content in leaf and root increased significantly. Generally in this study we concluded that silicon and mycorrhizal treatment able to increase the amount sugar and proline content in cucumber plants and resistant this plant against water stress.