ﻣﻄﺎﻟﻌﻪ ﮐﺎرﺑﺮد ﻣﯿﺪان ﻣﻐﻨﺎﻃﯿﺴﯽ و ﻧﺎﻧﻮذرات دي اﮐﺴﯿﺪﺗﯿﺘﺎﻧﯿﻮم ﺑﺮ ﺟﻮاﻧﻪ زﻧﯽ ﺑﺬر و رﺷﺪ ﮔﯿﺎﻫﭽﻪ ﺑﺎﻣﯿﻪ

The study of magnetic field and TiO2 nanoparticles application on seed Okra germination and seedling growth

ﭘﮋوﻫﺶ ﺣﺎﺿﺮ ﺑﻪ ﻣﻨﻈﻮر ﺑﻬﺒﻮد ﺟﻮاﻧﻪ زﻧﯽ ﺑﺬر ﺑﺎﻣﯿﻪ ﺑـﺎ اﺳـﺘﻔﺎده از ﺗﯿﻤﺎرﻫـﺎي ﻧـﺎﻧﻮ ذرات دﯾﺎﮐﺴـﯿﺪﺗﯿﺘﺎﻧﯿﻮم و ﻣﯿـﺪان ﻣﻐﻨﺎﻃﯿﺴـﯽ در داﻧﺸﮑﺪه ﮐﺸﺎورزي داﻧﺸﮕﺎه ﺗﺮﺑﺖ ﺣﯿﺪرﯾﻪ درﺳﺎل 1397 اﻧﺠﺎم ﺷﺪ. آزﻣﺎﯾﺶ ﺑﻪ ﺻﻮرت ﻓﺎﮐﺘﻮرﯾﻞ و در ﻗﺎﻟﺐ ﻃﺮح ﮐﺎﻣﻼ ﺗﺼﺎدﻓﯽ ﺑﺎ ﺳﻪ ﺗﮑﺮار اﻧﺠﺎم ﺷﺪ ﻓﺎﮐﺘﻮر اول ﺷﺎﻣﻞ ﺗﯿﻤﺎر ﺑﺬرﻫﺎ ﺑﺎ ﻣﯿﺪان ﻣﻐﻨﺎﻃﯿﺴﯽ در ﺷﺪﺗﻬﺎي 30 ،0 ، 60و90 ﻣﯿﻠﯽ ﺗﺴﻼ ﺑﻪ ﻣﺪت 30 دﻗﯿﻘـﻪ و ﻓﺎﮐﺘﻮر دوم ﭘﺮاﯾﻤﯿﻨﮓ ﺑﺬرﻫﺎ درﻏﻠﻈﺖ ﻫﺎي ﻣﺨﺘﻠﻒ ﻧﺎﻧﻮ ذرات دﯾﺎﮐﺴﯿﺪﺗﯿﺘﺎﻧﯿﻮم ﺷﺎﻣﻞ 0 ، 10، 50 و 100 ﻣﯿﻠﯿﮕﺮﻣﺒﺮﻟﯿﺘﺮ ﺑﻪ ﻣﺪت دو ﺳﺎﻋﺖ ﺑﻮد.ﻧﺘﺎﯾﺞ ﻧﺸﺎن داد ﮐﻪ درﺻﺪ ﺟﻮاﻧﻪ زﻧﯽ ﺑﺬرﻫﺎ ﺑﻪ ﻃﻮر ﻣﻌﻨﯽ داري ﺗﺤﺖ ﺗﺎﺛﯿﺮ ﺗﯿﻤﺎر ﻫﺎ ﻗﺮار ﮔﺮﻓﺖ ﺑﻪ ﻃـﻮري ﮐـﻪ ﺑﯿﺸـﺘﺮﯾﻦ درﺻﺪ ﺟﻮاﻧﻪ زﻧﯽ در ﮐﺎرﺑﺮد ﺗﯿﻤﺎر ﺷﺪت ﻣﯿﺪات ﻣﻐﻨﺎﻃﯿﺴﯽ 90 ﻣﯿﻠﯽ ﺗﺴﻼ و ﻧﯿﺰ ﮐﺎرﺑﺮد ﻧﺎﻧﻮذرات دي اﮐﺴﯿﺪ ﺗﯿﺘـﺎﻧﯿﻮم ﺑﺎﻏﻠﻈـﺖ 100 ﭘﯽ ﭘﯽ ام و ﺷﺪت ﻣﯿﺪان ﻣﻐﻨﺎﻃﯿﺴﯽ 90 ﺑﻪ دﺳﺖ آﻣﺪ. ﮐﻤﺘﺮﯾﻦ درﺻﺪ ﺟﻮاﻧﻪ زﻧﯽ درﻏﻠﻈﺖ 10 ﭘﯽ ﭘﯽ ام و ﻣﯿﺪان ﻣﻐﻨﺎﻃﯿﺴﯽ 60 ﻣﯿﻠﯽ ﺗﺴﻼ ﻣﺸﺎﻫﺪه ﺷﺪ.ﮐﺎرﺑﺮد ﺗﯿﻤﺎرﻫﺎي ﻧﺎﻧﻮ ذرات دي اﮐﺴﯿﺪ ﺗﯿﺘﺎﻧﯿﻮم ﺑﺎ ﻏﻠﻈﺖ 50 ﭘﯽ ﭘﯽ ام و ﺷﺪت ﻣﯿﺪان ﻣﻐﻨﺎﻃﯿﺴﯽ 90 ﻣﯿﻠﯽ ﺗﺴـﻼ و ﻧﯿﺰ ﮐﺎرﺑﺮد ﻧﺎﻧﻮذرات دي اﮐﺴﯿﺪ ﺗﯿﺘﺎﻧﯿﻮم ﺑﺎ ﻏﻠﻈﺖ 10 ﭘﯽ ﭘﯽ ام و ﺷﺪت ﻣﯿـﺪان ﻣﻐﻨﺎﻃﯿﺴـﯽ 60 ﻣﯿﻠـﯽ ﺗﺴـﻼ ﺑـﻪ ﺗﺮﺗﯿـﺐ ﺑﯿﺸـﺘﺮﯾﻦ و ﮐﻤﺘﺮﯾﻦ ﺳﺮﻋﺖ ﺟﻮاﻧﻪ زﻧﯽ را ﻧﺸﺎن دادﻧﺪ. ﻃﻮل رﯾﺸﻪ ﭼﻪ در ﺗﯿﻤﺎر ﮐﺎرﺑﺮد ﻏﻠﻈﺖ 50 ﭘﯽ ﭘـﯽ ام ﻧـﺎﻧﻮذرات دي اﮐﺴـﯿﺪ ﺗﯿﺘـﺎﻧﯿﻮم ﺑـﻪ ﻫﻤﺮاه ﻣﯿﺪان ﻣﻐﻨﺎﻃﯿﺴﯽ ﺑﺎ ﺷﺪت 30 ﻣﯿﻠﯽ ﺗﺴﻼ ﻧﺴﺒﺖ ﺑﻪ ﺷﺎﻫﺪ ﻣﻌﻨﯽ دار ﺑﻮد.ﺑﻪ ﻃﻮر ﮐﻠﯽ ﻣﯽ ﺗﻮان ﮔﻔﺖ ﮐـ ﻪ ﻧـﺎﻧﻮذرات دي اﮐﺴـﯿﺪ ﺗﯿﺘﺎﻧﯿﻮم و ﻣﯿﺪان ﻣﻐﻨﺎﻃﯿﺴﯽ ﺑﺎﻋﺚ ﺑﻬﺒﻮد و ﺗﺤﺮﯾﮏ ﺟﻮاﻧﻪ زﻧﯽ ﮔﯿﺎه ﺑﺎﻣﯿﻪ ﺷﺪﻧﺪ.

In order to seed germination improvement of Okra an experiment was conducted using TiO2 nanoparticles and magnetic field treatment in University of TorbatHeydarieh in 2018. The experiment was performed as completely randomized design arranged as factorial with three replications. First factor included magnetic field with 0, 30, 60 and 90 mT intensities during 30 minute and second factor was seed soaking with TiO2 nanoparticles at 0, 10, 50 and100 mg/l during two hours. Results revealed the highest germination percentage was seen in 90 mT magnetic field and use of 100 ppm TiO2 nanoparticles. Also the lowest germination percent was showed in 60 mT magnetic field and 10 ppm nanoparticles. Application of 90 mT magnetic field and 50 ppm TiO2 naoparticles induced the greatest germination rate and 60 mT magnetic field and 10 ppm TiO2 naoparticles demonstrated the lowest germination rate. Root length increased in 30 mT magnetic field and 50 ppm TiO2 nanoparticles significantly. Overall it can be stated employing magnetic field and TiO2 nanoparticles in sufficient rate induced promoted okra seed germination.