ผลของพลาสมาแบบไดอิเล็กทริคแบริเออร์ดิสชาร์จต่อความงอกและความแข็งแรงของเมล็ดพันธุ์ผักกาดหอม (Lactuca sativa)
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Abstract
Plasma technology has been successfully applied to various seeds for improving seed quality. Dielectric barrier discharge (DBD) plasma is one of non-thermal or cold plasma which causes little damage to biological materials. Therefore, the effect of DBD plasma on germination and vigor of lettuce (Lactuca sativa) seeds was examined. Seeds of cos lettuce (L. sativa var. longifolia) “Sweet Green” and leaf lettuce (L. sativa var. crispa) “Green Salad Bowl” were treated to DBD plasma with discharge voltages at 20 and 25 kV for 15, 30, 60, 120 and 240 s comparing to non-DBD plasma treated seeds as control. Results exhibited that DBD plasma at different discharge voltages and durations was unable to promote germination percentage but improved seed vigor of both cultivars. “Sweet Green” seeds exposed to DBD plasma with discharge voltage at 20 kV for 60 s showed the significantly lowest mean germination time as 2.73±0.21 days which was germinated 1.23 days earlier than the control. For “Green Salad Bowl”, seeds subjected to DBD plasma with discharge voltage at 20 kV for all durations revealed the significantly lowest mean germination time as 3.00±0.00 days which was germinated 0.73 days prior to non-DBD plasma treatment.
Keywords: DBD; plasma; germination; vigor; lettuce seed
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References
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