| 低温对香蕉幼苗的伤害及外源H_2O_2、CaCl_2对香蕉抗寒性的影响 |
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| 引用本文： | 余土元,冯颖竹.低温对香蕉幼苗的伤害及外源H_2O_2、CaCl_2对香蕉抗寒性的影响[J].中国农学通报,2011,27(25):219-223. |
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| 作者姓名： | 余土元 冯颖竹 |
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| 作者单位： | 仲恺农业工程学院,广州,510225 |
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| 基金项目： | 国家科技支撑计划"华南寒害监测预警技术研究" |
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| 摘 要： | 以香蕉品种‘巴西蕉’为材料,用H2O2、CaCl2、H2O（CK）喷洒香蕉幼苗植株,在人工气候箱中模拟低温胁迫,观察香蕉幼苗对低温的反应,研究外源H2O2、CaCl2对香蕉抗寒性的影响。结果表明,巴西蕉对低温敏感,且随着温度的降低,幼苗冷害症状加剧严重,膜透性加大,叶绿素降解加剧;和对照（CK）相比,低温胁迫下,外源H2O2、CaCl2能够提高7℃低温胁迫期间香蕉叶片脯氨酸含量和POD、CAT活性,降低MDA的积累。外源H2O2、CaCl2能有效降低香蕉幼苗叶片膜透性,减缓叶绿素的降解,减轻冷害程度,提高香蕉幼苗的抗寒性。
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| 关 键 词： | H2O2 CaCl2 香蕉幼苗 抗寒性 |
Low-temperature Injury of Banana Seedlings & Effects of Exogenous H2O2and CaCl2 on Cold Resistance in Banana |
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| Yu Tuyuan,Feng Yingzhu.Low-temperature Injury of Banana Seedlings & Effects of Exogenous H2O2and CaCl2 on Cold Resistance in Banana[J].Chinese Agricultural Science Bulletin,2011,27(25):219-223. |
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| Authors: | Yu Tuyuan Feng Yingzhu |
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| Institution: | Yu Tuyuan,Feng Yingzhu (Zhongkai University of Agriculture and Engineering,Guangzhou 510225) |
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| Abstract: | In this experiment,' Brazil ' banana,as the materials,were sprayed by H2O2,CaCl2 and H 2 O (CK) respectively.In the artificial climate box,the low temperature coercion was simulated in order to observe how banana seedlings reacted to low temperature.The effects of exogenous H2O2,CaCl2 on bananas cold resistance were studied.The results indicated that the ' Brazil ' tissue was sensitive to the low temperature and as the cold damage temperatures dropped,chilling injury symptoms of seedlings exacerbated,membra... |
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| Keywords: | H2O2 CaCl2 banana seedlings cold resistance |
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