| 四种园林树木抗寒性的比较分析 |
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| 引用本文： | 缴丽莉,路丙社,白志英,孟庆瑞,甄红伟.四种园林树木抗寒性的比较分析[J].园艺学报,2006,33(3):667-670. |
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| 作者姓名： | 缴丽莉 路丙社 白志英 孟庆瑞 甄红伟 |
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| 作者单位： | (河北农业大学园林与旅游学院, 河北保定071000; 河北农业大学西陵林场, 河北易县074200) |
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| 摘 要： | 以灯台树、复叶槭、流苏和山桐子幼树1年生休眠枝条为材料, 研究了不同冷冻处理条件下枝条的相对电导率和钾离子(K+ ) 相对渗出率, 利用Logistic方程计算了各树种的半致死温度(LT50 ) , 并通过苗木生长恢复试验进行了验证。结果表明: 山桐子、复叶槭、流苏和灯台树4种枝条的相对电导率和K+相对渗出率均随处理温度的降低而呈“S”形上升, 其枝条的LT50分别为- 11.5℃、- 24.9℃、- 20.7℃和- 29.8℃; 其抗寒性顺序依次为: 灯台树>复叶槭>流苏>山桐子, 与枝条恢复生长的试验结果基本一致。
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| 关 键 词： | 灯台树 复叶槭 流苏 山桐子 相对电导率 钾离子相对外渗率 半致死温度(LT50 ) |
| 文章编号： | 0513-353（2006）03-0667-04 |
| 收稿时间： | 2005-08-19 |
| 修稿时间： | 2005-08-192005-12-01 |
The Comparation of Cold Resistance of Four Gardening Young Trees |
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| Jiao Lili,Lu Bingshe,Bai Zhiying,Meng Qingrui,Zhen Hongwei.The Comparation of Cold Resistance of Four Gardening Young Trees[J].Acta Horticulturae Sinica,2006,33(3):667-670. |
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| Authors: | Jiao Lili Lu Bingshe Bai Zhiying Meng Qingrui Zhen Hongwei |
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| Institution: | (College of Landscape and Tourism, Agricultural University of Hebei, Baoding, Hebei 071000, China; Forestry Station, Agricultural University of Hebei, Yixian, Hebei 074200, China) |
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| Abstract: | Regarding the relative electric conductivity and relative leakage of K+ as a physiological indicator for the cold resistance of one-year dormant shoots of four gardening young trees, the curves of relative electric conductivity and relative leakage of K+ by different temperature treatments were rep resented using Logistic equation. The results showed that the relative electric conductivity and the relative leakage of K+ increased as a S-curves with the decreased of temperature. According to these S-shaped curves and theLogistic equation, it could be calculated the semi-lethal temperature (LT50 ) of four sticks of Idesia polycarpa, Acer negundo, Chionanthus retusu and Cornus controversa, which was - 11.5℃, - 24.9℃, - 20.7℃ and - 29.8℃ respectively. Among the four species, the cold resistance of Cornus controversa stick was the strongest, followed by Acer negundo, Chionanthus retusu and Idesia polycarpa. |
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| Keywords: | Cornus controversa Acer negundo Chionanthus retusu Idesia polycarpa Relative electric conductivity Relative leakage of K~ Semi-lethal temperature (LT_ 50 ) |
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