| 低温诱导对紫穗槐、刺槐抗寒性的影响 |
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| 引用本文： | 袁玉欣,王颖.低温诱导对紫穗槐、刺槐抗寒性的影响[J].植物生态学报,1996,20(1):65-73. |
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| 作者姓名： | 袁玉欣 王颖 |
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| 作者单位： | 河北林学院林学系 |
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| 摘 要： | 通过3年的引种试验表明，紫穗槐和刺槐的地上部分在试验地区(年均温2.5℃、1月份气温-16.1℃)受到不同程度的低温伤害。但它们的根系可安全越冬。3年的自然低温诱导，提高了根系的抗寒性，它们的LT50分别降低了3.2℃和20℃；植物组织起始伤害温度也分别降低了2.0℃和2.6℃。低温伤害测定说明，它们的根系在低于某温度点时，会出观组织软化、褐变等现象，同时伴有甜味出观。用Logistic曲线方程可以较好地描述低温对组织的伤害过程。
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| 关 键 词： | 抗寒仕 低温诱导 低温伤害 紫穗槐 刺槐 |
EFFECT OF COLD INDUCEMENT ON HARDINESS OF AMORPHA FRUTICOSA AND ROBINIA PSEUDOACACIA |
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| Yuan Yu-xin,Wang Ying,Pei BaO-hua,Jia Xu-guang.EFFECT OF COLD INDUCEMENT ON HARDINESS OF AMORPHA FRUTICOSA AND ROBINIA PSEUDOACACIA[J].Acta Phytoecologica Sinica,1996,20(1):65-73. |
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| Authors: | Yuan Yu-xin Wang Ying Pei BaO-hua Jia Xu-guang |
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| Abstract: | The introduction experiment for three years showed that the above ground parts of A. fruticosa and R. pseudoacacia were damaged differently coldness in the region (annual average temperature 2.5℃, Jan. average temperature -16.1℃), while the roots could safely survive the winter. The hardiness of roots had increased through three years of natural cold inducement, and LT50 values of them dropped 3.2℃ and 2.0℃ respectively. Meanwhile, the initial damage temperature also dropped 2.0℃ and 2.6℃ The chilling injury experiment demonstrated that roots had phenomenon of tissue softening and browning, accompanied with something of sweet taste. When temperature was below certain points, a Logistic equation could imitate well this chilling injury process. |
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| Keywords: | Cold resistance cold induction Chilling injury Amorpha fruticosa Robinia pseudoocacia |
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