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KMID : 0903619960370030357
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Journal of the Korean Society for Horticultural Science
1996 Volume.37 No. 3 p.357 ~ p.361
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Effect of Sodium Hypochlorite Treatment on Germination of Spinach Seeds
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Abstract
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Effects of sodium hypochlorite (NaOCl) solution on germination of spinach seeds were investigated. Scarification with NaOCl at 1, 2 and 4% improved aced germination regardless of immersilon time. A 3h treatment with 4% NaOCl enabled up to 36% of seeds to germinate at 30℃ while untreated seeds had only 6% germination. However, germination of NaOCl-treated seeds was lower than that of naked ones. Seeds incubated an NaOCl solution had lower, germination rate than those on H₂O₂, but showed higher germination than those on GA solution. Umlike the role of H₂O₂, no provision of additional oxygen to the seeds was found with NaOCl incubation. Scratching seed coat significantly increased germination percentage and speed compared to NaOCl and H₂O₂ treatment in naked seeds. Immersion in NaOCl weakened hardness and decreased the content of galacturonic acid of the pericarp. These results indicate that the modes of action of NaOCl in the promotion of seed germination at high temperature reside not in additional oxygen supply to floe seeds but in weakening the pericarp blocking emergence of radicles.
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