Effects Of Magnetic Field Treatment On Seed Germination And Growth Of Mung Bean

In this study,mung bean cultivar Jinlv3 was used as the material for the study of effects of magnetic field treatment on the growth of mung bean.The mung bean seeds were treated with different intensity magnetic fields and were treated at different times,By measuring morphological and physiological indexes in the process of seed germination to select the best way of magnetic field.In this paper,the effect of magnetic field treatment on the drought resistance of mung bean was studied under the stress of 20%PEG-6000.In addition,the effect of low intensity magnetic field on the change of mung bean roots was studied by using the magnetic field corresponding to the current of 4.2A.The results showed that:1.Different intensities of magnetic field treatment Jinlv3,the morphological and physiological indicators were different from the control.Seed germination rate,germination energy,plant height fresh weight and dry weight were increased at first time and then decreased with the increase of magnetic field intensity,and reached the maximum at 42.5 mT.The number of lateral roots and root length increased first and then decreased with the increase of magnetic field intensity,and peaked at 61.1 mT.With the increase of the magnetic field strength,the content of soluble protein,the activity of POD,SOD and CAT increased first and then decreased with the increase of magnetic field intensity,the content of soluble protein and POD and CAT reached the maximum at 42.5mTcomparing with the control.The maximum SOD activity was at 61.1 mT.The content of MDA decreased first and then increased,and the content of MDA reached the lowest value when the magnetic treatment intensity was 42.5mT.Therefore,we can find that the magnetic field of 42.5 mT can obviously promote the germination and seedling growth of Jinlv3.2.The biological effects of different treatment time on Jinlv3 were different.The morphological indexes such as germination energy,germination rate,lateral root number,root length,plant height and plant weight were significantly different from those of control,and showed the trend of increasing at first time and then rising with time.Among them,the germination energy,germination rate,lateral root number,plant height and fresh weight peaked at 2h,while root length and dry weight were the highest at 1.5h.Physiological indicators also differ from the control.With the prolongation of time,the content of soluble protein,the activity of POD,SOD and CAT showed the trend of increasing first and then decreasing,the content of soluble protein,SOD and CAT had the highest activity at 2h,and the optimum value of POD was 1.5 h.The content of MDA was decreased compared with the control,and the decline in 2h at most.It indicated that the most conducive to the growth of mung beans is 2h.3.The effects of different intensity magnetic field treatments on seed germination were different.The germination rate,germination rate,root length and lateral root number of 61.1mT seed were all improved compared with the control;POD,SOD activity,soluble protein content reached the maximum.The content of the MDA was significantly decreased,which decreased the damage of the oxidation on cell membrane.From this research,it was tested that the magnetic treatment of 61.1mT was the optimum treatment magnetic to improve the drought resistance of mung beans.4.Low-intensity magnetic field continuously treated mung bean seeds,significantly promoted the roots growth and lateral development.In the process of rooting,IAA content increased,ABA content decreased,GA3 and ZR changes trend is not obvious.