
Keywords: شاخص محتوای کلروفیل; PAs; polyamines; PAO; polyamine oxidase; WT; wild type tobacco; S-ZmPAO/AS-ZmPAO; sense/antisense-ZmPAO transgenic plants; Anet; net photosynthetic rate; CCI; chlorophyll content index; DAT; days after treatment; FW; fresh weight; DW; dry weight; FRAP; fe