| 3种含笑属植物抗寒性比较 |
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| 引用本文： | 叶建荣,陈德俊,申亚梅. 3种含笑属植物抗寒性比较[J]. 安徽农学通报, 2012, 18(7): 51-55 |
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| 作者姓名： | 叶建荣 陈德俊 申亚梅 |
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| 作者单位： | 临安天目珍稀植物研究所,浙江临安,311300;浙江农林大学园林学院,浙江临安,311300 |
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| 基金项目： | 浙江省科技厅农业面上资助项目，浙江省花卉产业创新团队资助项目 |
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| 摘 要： | 采用逐级降温程序模拟冰冻处理技术测定含笑、乐昌含笑、深山含笑3种含笑属植物离体叶片的相对电导率和可溶性蛋白含量,并用Logistic方程计算其半致死温度(LT50)。结果表明:(1)3种植物的耐低温能力存在着显著差异,随着温度的降低,叶片电导率总体上呈S形曲线变化;采用Logistic方程计算3种植物的耐寒半致死温度(LT50),得出3种植物的耐寒强弱次序为含笑(–39.2℃),乐昌含笑(–32.9℃),深山含笑(–31.0℃)。(2)随着低温处理时间的延长,3种植物叶片蛋白质含量呈现上升趋势。
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| 关 键 词： | 含笑属植物 相对电导率 半致死温度 可溶性蛋白 耐寒性 |
Analysis of the Low Temperature Tolerance of Three Ornamental Plants of Michelia |
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| Affiliation: | Ye Jianrong et al.(1 Lin＇an Tianmu Rare Plants Research Institute,Lin＇an 311300,China) |
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| Abstract: | Electric conductivities and Soluble protein content of excised-leaves of 3 plants of Michelia were measured and lethal temperature 50（LT50） were calculated under the simulated freezing treatment.The results as following（1）The low temperature tolerance ability of the 3 species had a significant difference,and the freezing resistance from strong to weak was Michelia figo,Michelia maudiae,Michelia chapensls.The relative electrical conductivity of the 3 species increased gradually as temperature dropped,and showed a S-shape curve generally;LT50 values of the 3 species were –39.2℃,–32.9℃,–31.0℃ which respectively calculated by programs of Logistic equation.（2）With the low-temperature processing of 3 kinds of plant leaves protein content on the rise. |
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| Keywords: | Michelia Relative conductivity Semi-lethal temperature Soluble protein content Cold tolerance. |
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