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KMID : 0903619950360030426
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Journal of the Korean Society for Horticultural Science
1995 Volume.36 No. 3 p.426 ~ p.431
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Effect of pretreatment and Cold Storage on Vase Life and Quality of Cut Hybrid Delphinium (Delphinium × elatum)
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송천영/Song, Cheon Young
방창석/박영섭/정순경/Bang, Chang Seok/Park, Young Seob/Chung, Soon Kyung
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Abstract
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The effect of pretreatments, cold storage, and various holding solutions on the vase life of cut hybrid delphinium (Delphinium × elatum) was investigated. ´Pacific Giant Lilac´ delphinium was harvested and pulsed with 0.4 mM STS + 7% sucrose and 0.4 mM STS + 7% sucrose + 100 ppm GA₃ + 1 mM MnCl₂ for 2 hr. These delphiniums were stored with dipping the stems in distilled water or wrapped in a newspaper at 4℃ for 1 and 2 weeks, and then held in distilled water or preservative solution with 150 ppm 8-hydroxyquinoline sulfate (HQS) + 2% sucrose. Vase life, fresh weight, solution uptake, and ethylene gas production were measured. As the storage duration increased, vase life, solution uptake, and fresh weight were decreased. Pretreatments containing STS + sucrose or STS + sucrose + GA₃ + MnCl₂ before storage extended vase life about 5 days longer than controls regardless of storage duration and methods. The preservative solution with 150 ppm HQS + 2% sucrose increased vase life by 4 days than control and improved quality in 0 and 1 week storage of cut delphinium. Ethylene production from cut delphinium increased before dropping of flower leaf, then decreased. Ethylene production from the flowers held in HQS + sucrose after STS + sucrose increased highest point 3 days later than that of water. These solution inhibited microbial contamination and maintained structural role in vascular cambium tissue of the stem.
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