بررسی برخی از آنزیم‌های موثر در تحمل به تنش خشکی در گیاهچه‌های گندم تحت تنش خشکی و آبیاری مجدد

Wheat seed matures are very tolerant to drought stress but they lost the drought tolerance as same as other seeds after water absorption and it decreased to half in sixth day seedlings. In order to detect the effects of drought tolerance and rewater on stress effective enzymes such as Peroxidase, lipoxygenase, oxin oxidase and amylase was done by protein and enzyme assay on seedlings and seeds. The experiment was done on marvdasht (Iranian variety) in two-time line of drought stress and rewater by 3 biological replication. The results showed that the amount of total protein increased in drought stress and then decreased after rewater . Also, peroxidase and lipoxygenase decreased in drought stress surprisingly but it increased after rewater and it is impotant because it can be effective factor to regenerate seedlings. Studies on oxin oxidase and amylase activity showed increase activity of them in drought stress that it caused stop growth and provide shikimate precursor and supply energy by sugar analysis respectively in seedlings and seeds.