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KMID : 0903620000410040419
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Journal of the Korean Society for Horticultural Science
2000 Volume.41 No. 4 p.419 ~ p.422
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Effects of Plant Growth Regulators on the Growth and Cut Flower Quality of Eustoma grandiflorum cv. Planntina Violet
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이종원/Lee, Jong Won
백기엽/김시동/김태중/윤태/김주형/이희두/Paek, Kee Yoeup/Kim, Si Dong/Kim, Tae Joung/Yun, Tae/Kim, Ju Hyoung/Lee, Hee Doo
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Abstract
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This study was carried out to investigate the effect of plant growth regulators on growth and cut-flower quality of Eustoma grandiflorum cv. Plantina Violet in rain shelter greenhouse. Length of flower stem and No. of leaves increased by the application of 200 or 400 ㎎·L^(-1) GA₃ and 200 ㎎·L^(-1) GA₃ combined with 200 ㎎·L^(-1) ethephon. Marketability was high by one application (80 days after sowing) of 200 ㎎·L^(-1) GA₃, but low marketable flowers expressed as high ratio of bending of flower neck tended to increase with the three applications (80 days after sowing, 7 and 21 days after planting, respectively) of 200 or 400 ㎎·L^(-1) GA₃. Days to flowering was shortened from 2 to S days by GA₃ treatment, and delayed from 10 to 12 days with the application of ethephon treatment as compared to control. Yields of marketable flowers was improved with the application 100, 200 ㎎·L^(-1) ethephon, one time application of 200 ㎎·L^(-1) GA₃ and 200 ㎎·L^(-1) GA₃ combined with 200 ㎎·L^(-1) ethephon.
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KEYWORD
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