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Effects of Presowing Seed Treatments on Improvement of Seed Germination and Seedling Emergence of Onion  

강진호 (경상대학교 생명과학연구소)
정은호 (경남농업기술원)
김만배 (경남농업기술원)
박정민 (경상대학교 생명과학연구소)
Publication Information
Korean Journal of Plant Resources / v.17, no.3, 2004 , pp. 219-226 More about this Journal
Abstract
Transplantings of onion (Allium cepa L.) seedlings are required for higher germinability and uniformity. This study was done to determine effects of various seed treatments (seed cleaning, priming, GA$_3$, prechilling, drying, and light quality during seed drying) on germination and seedling emergence. Nongwoodaego and Changnyungdaego were used as cultivars for checking seed germination, and two cultivars and Cheonjuguhyeonghwang were investigated with seedling production rate. Seed cleaning using water prior to the other treatments greatly increased germination rate. Priming with 200mM Ca(NO$_3$)$_2$ solution somewhat alleviated the germination rate while GA$_3$ did not. Prechilling had the highest rate among the treatments. Seed drying after prechilling enhanced the rate compared to non drying, and during drying the prechilled seeds red light illumination showed the greatest rate in comparison with dark, blue, and far-red ones. Seedling production rate was enhanced in sequential treatments of seed cleaning, prechilling for 3 to 5 days, and red light treatment during 6 hour seed drying.
Keywords
drying; $GA_3$; germination, light quality; onion; prechilling; priming; seed cleaning; seedling production;
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