Horticultural Research (Japan)
Online ISSN : 1880-3571
Print ISSN : 1347-2658
ISSN-L : 1347-2658
Crop Production & Cropping Type
Effects of Winter Night Temperatures on the Flowering of Snapdragons (Antirrhinum majus L.)
Zentaro InabaHisao Ohtsuka
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2002 Volume 1 Issue 4 Pages 263-267

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Abstract
Effects of winter night temperature on the flowering response of snapdragons (Antirrhinum majus L.) in pinching and non-pinching cultivation were investigated. In pinching cultivation, as the night temperature was increased, the flowering of the stem was accelarated, generated under the first node of Hatsuharu and Light Pink Butterfly II, and the second node of Verne, respectively. Yields of cut flowers in Hatsuharu and Verne were the largeset at a night temperature of 16°C, but Light Pink Butterfly II was not affected by different night temperatures. In non-pinching cultivation of Light Pink Butterfly II, as the night temperature was increased, flowering was accelerated. Suitable night temperatures in winter for snapdragon cut flower production were suggested to be 6 to 11°C, 11°C and 16°C for Hatsuharu, Light Pink Butterfly II and Verne, respectively.
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© 2002 by Japanese Society for Horticultural Science
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