| Study on Supercooling Point and Freezing Point in Floral Organs of Apricot |
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| 作者姓名： | MENG Qing-rui LIANG Yin-quan WANG Wen-feng DU Shao-hua LI Yan-hui YANG Jian-min |
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| 作者单位： | Agricultural University of Hebei, Baoding 071001, P.R.China |
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| 基金项目： | 国家自然科学基金;河北农业大学科研项目 |
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| 摘 要： | Under the environment of an artificial climate chamber, supercooling point （SCP） and freezing point （FP） in flower and young fruit at different development stages and freezing injuries of floral organs were studied. The apricot cultivars tested were Kety, Golden Sun and Honghebao. With the development of flower buds, SCP and FP increased, which indicated that their cold resistance decreased. SCP and FP varied with different floral organs. For different apricot cultivars, it was found that, the lower SCP or FP in floral organs was, the more resistant capacity the cultivar had, and the larger the temperature interval from SCP to FP was. SCP was not a constant value, but a range. Frequency distribution of SCP in petals was more dispersing than that in stamens and pistils. Floral organs could maintain a supercooling state to avoid ice formation, but they were sensitive to freezing. Once floral organs froze, thev turned brown after thawing.
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| 关 键 词： | 杏 花器官 过冷点 凝固点 冷害 |
Study on Supercooling Point and Freezing Point in Floral Organs of Apricot |
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| MENG Qing-rui LIANG Yin-quan WANG Wen-feng DU Shao-hua LI Yan-hui YANG Jian-min.Study on Supercooling Point and Freezing Point in Floral Organs of Apricot[J].Agricultural Sciences in China,2007,6(11):1330-1335. |
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| Authors: | MENG Qing-rui LIANG Yin-quan WANG Wen-feng DU Shao-hua LI Yan-hui YANG Jian-min |
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| Institution: | 1. Department of Thermal and Nuclear Energy, Kaunas University of Technology, K. Donelaicio 20-212 LK, LT-44239 Kaunas, Lithuania;2. Department of Building Energy Systems, Kaunas University of Technology, Studentu 48-437A, LT-51367 Kaunas, Lithuania;1. Departamento de Química, Universidad Nacional de Colombia, Bogotá, Colombia;2. Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal;3. U.D. Química Física, Facultad de Farmacia, Universidad de Alcalá, Spain;1. Tel-Tek, Kjølnes Ring 30, 3918 Porsgrunn, Norway;2. Telemark University College, Faculty of Technology, Kjølnes Ring 56, 3918 Porsgrunn, Norway;1. State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China;2. School of Applied Sciences, RMIT University, City Campus, Melbourne, VIC 3001, Australia |
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| Abstract: | Under the environment of an artificial climate chamber, supercooling point (SCP) and freezing point (FP) in flower and young fruit at different development stages and freezing injuries of floral organs were studied. The apricot cultivars tested were Kety, Golden Sun and Honghebao. With the development of flower buds, SCP and FP increased, which indicated that their cold resistance decreased. SCP and FP varied with different floral organs. For different apricot cultivars, it was found that, the lower SCP or FP in floral organs was, the more resistant capacity the cultivar had, and the larger the temperature interval from SCP to FP was. SCP was not a constant value, but a range. Frequency distribution of SCP in petals was more dispersing than that in stamens and pistils. Floral organs could maintain a supercooling state to avoid ice formation, but they were sensitive to freezing. Once floral organs froze, they turned brown after thawing. |
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| Keywords: | apricot floral organs supercooling point freezing point frost |
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