| 低温胁迫对10个油棕新品种生理生化特性的影响 |
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| 引用本文： | 李 静,陈秀龙,李志阳,郑永清,曹建华. 低温胁迫对10个油棕新品种生理生化特性的影响[J]. 华南农业大学学报, 2013, 34(1): 62-66 |
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| 作者姓名： | 李 静 陈秀龙 李志阳 郑永清 曹建华 |
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| 作者单位： | 1 中国热带农业科学院 广州实验站，2 农业部橡胶树生物学重点开放实验室,省部共建国家重点实验室培训基地,海南省热带作物栽培生理学重点实验室，;1 中国热带农业科学院 广州实验站，;1 中国热带农业科学院 广州实验站，;1 中国热带农业科学院 广州实验站，;中国热带农业科学院 科技信息研究所 |
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| 基金项目： | 省部共建重点实验室开放课题基金（KLOF1107）；橡胶研究所基本业务费项目（1630022011011） |
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| 摘 要： | 对10个油棕Elaeis guineensis Jacg新品种(RYL31～RYL40)半年生实生苗进行短期低温处理,测定油棕在低温逆境下的生理生化指标.结果表明:随着温度的降低,植物叶片叶绿素含量表现为先上升后下降然后再上升的趋势;游离脯氨酸、可溶性蛋白呈现先升高后降低的趋势;油棕可溶性糖含量受温度影响较大,且随低温胁迫强度的增加而增加;丙二醛(MDA)含量、质膜相对透性随温度降低表现为先下降后上升的趋势,其中RYL37、RYL38和RYL39品种的MDA含量一直呈下降趋势;不同生理指标对低温的敏感度不同,轻度低温能刺激植物防御机能增强,重度低温则会扰乱植物本身的防御机能.
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| 关 键 词： | 油棕 生理生化特性 低温胁迫 |
| 收稿时间： | 2012-04-12 |
Physiological and Biochemical Responses of 10 New Varieties of Elaeis guineensis to Low Temperature Stress |
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| LI Jing,CHEN Xiulong,LI Zhiyang,ZHENG Yongqing,CAO Jianhua. Physiological and Biochemical Responses of 10 New Varieties of Elaeis guineensis to Low Temperature Stress[J]. JOURNAL OF SOUTH CHINA AGRICULTURAL UNIVERSITY, 2013, 34(1): 62-66 |
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| Authors: | LI Jing CHEN Xiulong LI Zhiyang ZHENG Yongqing CAO Jianhua |
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| Affiliation: | 1 Chinese Academy of Tropical Agricultural Sciences Guangzhou Experimental Station,2 Ministry of Agriculture Open Key Laboratory for Rubber Biology, State Key Laboratory Breeding Base, Hainan Provincial Laboratory for Tropical Crops Cultivation and Physiology,;1 Chinese Academy of Tropical Agricultural Sciences Guangzhou Experimental Station,;1 Chinese Academy of Tropical Agricultural Sciences Guangzhou Experimental Station,;1 Chinese Academy of Tropical Agricultural Sciences Guangzhou Experimental Station,;Institute of Scientific and Technical Information, Chinese Academy of Tropical Agricultural Sciences, |
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| Abstract: | Half-year-old seedlings of 10 new varieties of Elaeis guineensis Jacg (RYL31-RYL40) were studied under low temperature stress conditions in order to evaluate their physiological and biochemical characteristics. With the increase of intensity of low temperature stress, chlorophyll content showed an increased-decreased-increased change trend; proline and soluble protein showed an increased-decreased trend; soluble sugar contents were closely related to the temperature, increasing with the intensity of low temperature stress; MDA content and relative conductivity of the varieties first decreased and then increased, however, RYL37, RYL38 and RYL39 presented continuous decrease trend. The different physiological indexes exhibited different reactions to the temperature; mild hypothermia could enhance the plant defense function, while high strength (low temperature) could disturb the defense function of the plants. |
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| Keywords: | Elaeis guineensis physiological and biochemical characteristics low temperature stress |
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