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KMID : 1098420050130040186
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Korean Journal of Medicinal Crop Science
2005 Volume.13 No. 4 p.186 ~ p.189
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Effect of Different Temperatures on Growing and Flowering of Orostachys japonicus A. Berger
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Kang Jin-Ho
Jeon Seung-Ho
Yoon Soo-Young
Hong Dong-Oh
Shin Sung-Chul
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Abstract
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Plant flowering should be mainly affected by temperature and daylength. The study was carried out to measure the effect of temperature during winter on growth and floret flowering of Orostachys japonicus grown under 2 hour night break. Temperature was controlled above 10^{circ}C and 20^{circ}C as heating boilers were run below them to compare the natural temperature. Night-break treatment was done on August 25 and afterward samples were taken every 4 weeks to check growth, morphological and flowering related characters. Plant height, inflorescence length, number of leaves including bracts and stem diameter were increased in heating temperatures of > 10^{circ}C compared to natural temperature although similar in the two heating ones. Leaves and bracts, florets, stem, root, shoot and total dry weights showed the same response as the above morphological and flowering related characters. Florets were more formed but less flowered with higher temperatures. Anthesis rates of individual plant were 100% in natural temperature, 25% in > 10^{circ}C heating temperature but none in > 20^{circ}C heating temperature.
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KEYWORD
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Orostachys japonicus, heating temperature, growth, morphological characters, anthesis
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