Abstract
The current study was carried out to reveal the possible impacts of non-thermal plasma on water uptake by seeds, seed germination and vigor of seedlings of watermelon seeds using cold plasma jet at atmospheric pressure and room temperature. Cold atmospheric plasma jet with nitrogen gas sources was employed in this study. Five treatment doses and one control were used to conduct germination parameters. The effects of the different duration time of cold atmospheric plasma on the germination of treated watermelon seeds were studied. The cold plasma operated at 3 Kv and 14 l/min as a fixed input voltage and a fixed flow rate respectively. Cold atmospheric plasma increased the germination percentage of watermelon as well as the growth parameters (root and shoot length, dry weight), and the vigor of seedlings. The effects of cold plasma during this study depended on exposure time. The operation time of 4 min considered as an appropriate plasma dose to promote the germination parameters.
Highlights
Physical methods like radiation, high electromagnetic field, microwave irradiation and cold atmospheric pressure plasma play a vital role solely in medication for microorganism decontamination [1], are helpful for industrial purposes, e.g. for increasing surface hydrophilicity and material surface modification [2]
The current study aims to prove that the seeds germination and early growth of watermelon change after seeds pretreatment by cold atmospheric plasma jet, and seeks a beneficial treatment dosage for the seeds
The important advantage of the cold atmospheric plasma jet treatment of seeds is that the plasma source is capable working in wet and dusty environments and continuous mode
Summary
High electromagnetic field, microwave irradiation and cold atmospheric pressure plasma play a vital role solely in medication for microorganism decontamination [1], are helpful for industrial purposes, e.g. for increasing surface hydrophilicity and material surface modification [2]. K. Lotfy interesting industrial applications is cold atmospheric plasma which generated at low temperature [3]. Cold atmospheric plasma devices are a basic tool in a wide range of technological and bio-medical applications. In last two decades, several cold atmospheric plasma devices were investigated, as have their use with thermally sensitive materials and medical applications [7]-[13]. The plasma treatment creates a complex mixture of surface functionalities that influence surface physical and chemical properties and leads to a dramatic modification of wetting behavior of the surface [14] [15] [16]. Cold (nonequilibrium) radiofrequency plasma treatment of biological objects becomes a very important tool for modification of their chemical and physical properties [18] [19] [20] [21]
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