| 泽泻和慈姑叶片对低温胁迫的响应 |
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| 引用本文： | 巴永娣,张建旗,赵峰. 泽泻和慈姑叶片对低温胁迫的响应[J]. 草原与草坪, 2015, 0(2). DOI: 10.3969/j.issn.1009-5500.2015.02.017 |
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| 作者姓名： | 巴永娣 张建旗 赵峰 |
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| 作者单位： | 兰州市园林科学研究所,甘肃 兰州,730070 |
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| 基金项目： | 兰州市科技局攻关项目“兰州地区湿地适生水生植物引种栽培及应用研究” |
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| 摘 要： | 以泽泻和慈姑叶片为试验材料,研究其在0、-10、-15、-20℃低温胁迫下叶片中可溶性糖(WSC)、游离脯氨酸(Pro)含量、过氧化物酶(POD)、过氧化氢酶(CAT)活性及相对电导率等5个生理生化指标的变化。结果表明,在0℃时2个植物的POD和CAT活性显著增加,之后随温度的降低而下降,在-20℃无活性。随着温度的降低,叶片相对电导率、可溶性糖和脯氨酸含量均有所增加,但增加幅度不同,综合5项指标分析得出,慈姑的抗寒性强于泽泻。
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| 关 键 词： | 低温胁迫 泽泻 慈姑 抗寒性 |
Effects of low temperature stress on leaves of Alisma orientale and Sagittaria sagittifolia |
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| BA Yong-di,ZHANG Jian-qi,ZHAO Feng. Effects of low temperature stress on leaves of Alisma orientale and Sagittaria sagittifolia[J]. Grassland and Turf, 2015, 0(2). DOI: 10.3969/j.issn.1009-5500.2015.02.017 |
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| Authors: | BA Yong-di ZHANG Jian-qi ZHAO Feng |
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| Abstract: | The leaves of two alismataceae plants were used to study the changes of soluble sugar,proline content,peroxidase (POD),catalase activity(CAT)and the relative conductivity under the different low tem-perature stress (0 ℃,-10 ℃,-15 ℃,-20 ℃).The results showed two plants have a significant increase in the activity of POD and CAT at 0 ℃.The activity of POD and CAT decreased with decreasing temperature,and there was no activity of both components at -20 ℃.But,the activity of POD and CAT in S .sagittifolia were higher than that in A.orientale at same temperature.With increasing low temperature stress,the contents of rel-ative conductivity,soluble sugar and proline in leaves were increased,but,the extent of increase was different. Baes on the integrated five indexes,the cold resitance of S .sagittifolia were stronger than A.orientale . |
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| Keywords: | cold stress Alisma orientale Sagittaria sagittifolia cold hardiness |
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