ﺑﺮرﺳﯽ ﺗﺎﺛﯿﺮﮐﺎرﺑﺮد ﻫﻤﺰﻣﺎن زﺋﻮﻟﯿﺖ و ﺳﺎﻟﯿﺴﯿﻠﯿﮏ اﺳﯿﺪ در اﻓﺰاﯾﺶ ﺑﺮﺧﯽ وﯾﮋﮔﯽ ﻫﺎي ﻣﺮﺑﻮط ﺑﻪ ﻣﻘﺎوﻣﺖ ﺑﻪ ﺧﺸﮑﯽ در ارﻗﺎم ﮔﻨﺪم

Drought tolerance enhancement of wheat cultivars in response to co-application of zeolite and salicylic acid

ﺗﻨﺶ ﺧﺸﮑﯽ ﻣﻬﻢﺗﺮﯾﻦ ﺗﻨﺶ ﻏﯿﺮزﻧﺪه اﺛﺮﮔﺬار در ﺗﻮﻟﯿﺪ ﻣﺤﺼﻮﻻت زراﻋﯽ ﻣﯽﺑﺎﺷﺪ. در ﯾﮏ آزﻣﺎﯾﺶ ﮔﻠﺨﺎﻧﻪاي ﺗﺎﺛﯿﺮ ﮐﺎرﺑﺮد زﺋﻮﻟﯿﺖ )0، 4ﮔﺮم در ﮐﯿﻠﻮﮔﺮم و 8 ﮔﺮم در ﮐﯿﻠﻮﮔﺮم( و ﺳﺎﻟﯿﺴﯿﻠﯿﮏاﺳﯿﺪ )0و 1ﻣﯿﻠﯽ ﻣﻮﻻر( در ﺷﺮاﯾﻂ ﺗﻨﺶ ﺧﺸﮑﯽ در دو رﻗﻢ ﻣﻘﺎوم و ﺣﺴﺎس ﮔﻨﺪم ﻣﻮردﺑﺮرﺳﯽ ﻗﺮار ﮔﺮﻓﺖ. ﻧﺘﺎﯾﺞ ﺣﺎﺻﻞ از اﯾﻦ ﭘﮋوﻫﺶ ﺑﯿﺎﻧﮕﺮ ﻧﻘﺶ ﻣﺜﺒﺖ ﮐﺎرﺑﺮد زﺋﻮﻟﯿﺖ و ﺳﺎﻟﯿﺴﯿﻠﯿﮏ اﺳﯿﺪدر ﺗﻨﻈﯿﻢ ﭘﺎﺳﺦﻫﺎي ﻣﺨﺘﻠﻒ ﻓﯿﺰﯾﻮﻟﻮژﯾﮏ ارﻗﺎم ﮔﻨﺪم ﺑﻪ ﺗﻨﺶ ﺧﺸﮑﯽ ﺑﻮد. ﺑﻪﻃﻮريﮐﻪ زﺋﻮﻟﯿﺖ و ﺳﺎﻟﯿﺴﯿﻠﯿﮏ ﻣﻨﺠﺮ ﺑﻪ ﺗﺠﻤﻊ ﻗﻨﺪﻫﺎي ﻣﺤﻠﻮل و ﮐﺎﻫﺶ ﻣﯿﺰان ﭘﺮاﮐﺴﯿﺪ ﻫﯿﺪروژن و ﻣﺎﻟﻮن در آﻟﺪﻫﯿﺪ در ﺑﺮگ ﮔﯿﺎﻫﺎن ﮔﻨﺪم ﺗﻨﺶ دﯾﺪه ﮔﺮدﯾﺪ ﮐﻪ اﯾﻦ ﻣﻮﺿﻮع ﺑﯿﺎﻧﮕﺮ اﻓﺰاﯾﺶ ﺗﻮاﻧﺎﯾﯽ ﺗﻨﻈﯿﻢ اﺳﻤﺰي در ارﻗﺎم ﮔﻨﺪم ﻣﯽﺑﺎﺷﺪ. ﻫﻢﭼﻨﯿﻦ ﺑﺎ ﺗﻮﺟﻪ ﺑﻪ ﻧﺘﺎﯾﺞ اﯾﻦ ﭘﮋوﻫﺶ ﻣﯽﺗﻮان ﻧﺘﯿﺠﻪﮔﯿﺮي ﮐﺮد ﮐﻪ ﮐﺎرﺑﺮد زﺋﻮﻟﯿﺖ ﺑﻪ ﻣﯿﺰان 8 ﮔﺮم در ﮐﯿﻠﻮﮔﺮم در اﻓﺰاﯾﺶ ﺗﺤﻤﻞ ﺗﻨﺶ ﺧﺸﮑﯽ ارﻗﺎم ﮔﻨﺪم ﺑﺴﯿﺎر ﻣﻮﺛﺮﺗﺮاز4 ﮔﺮم در ﮐﯿﻠﻮﮔﺮم ﺑﻮد.

Drought stress has been considered as a destructive abiotic stress all around the world. We examined the effects of different rates of zeolite (0, 4 and 8 gram per kilogram soil) and salicylic acid (0 and 1mM) on wheat cultivars under drought conditions. Results confirmed the positive role of zeolite and salicylic acid in regulating physiological responses of wheat plants in drought situation. Salicylic acid and zeolite increased soluble sugars concentration and dampened Malondialdehyde and H2O2 content in plants leaves in both cultivars. According to our results plants that grown in pots with 8 gram zeolite per 1 kilogram soil were statistically more tolerant to drought than plants in pots with 4 gram zeolite per 1 kilogram soil.