李建勇, 张振贤, 葛均青, 王磊, 史修柱. 冬季田间冻害胁迫对露地越冬甘蓝膜系统的影响[J]. 中国生态农业学报(中英文), 2003, 11(3): 58-60.
引用本文: 李建勇, 张振贤, 葛均青, 王磊, 史修柱. 冬季田间冻害胁迫对露地越冬甘蓝膜系统的影响[J]. 中国生态农业学报(中英文), 2003, 11(3): 58-60.
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LI Jian-Yong, ZHANG Zhen-Xian, GE Jun-Qing, WANG Lei, SHI Xiu-Zhu. Effect of freezing stress on the membrane system of the open-field winter cabbage[J]. Chinese Journal of Eco-Agriculture, 2003, 11(3): 58-60.
Citation: LI Jian-Yong, ZHANG Zhen-Xian, GE Jun-Qing, WANG Lei, SHI Xiu-Zhu. Effect of freezing stress on the membrane system of the open-field winter cabbage[J]. Chinese Journal of Eco-Agriculture, 2003, 11(3): 58-60.
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冬季田间冻害胁迫对露地越冬甘蓝膜系统的影响

Effect of freezing stress on the membrane system of the open-field winter cabbage

    摘要
  • 摘要: 观测冻害对露地越冬栽培甘蓝膜系统的影响结果表明，生长季内叶片电解质渗漏率、丙二醛(MDA)含量随温度下降而增加，抗冻性差的“8398”、“8132”甘蓝品种在1月份冻害温度下电解质渗漏率>50％ ，膜系统受伤害较重，酶促保护系统关键酶超氧化物歧化酶(SOD)活性急剧下降，过氧化物酶(POD)活性上升。露地越冬甘蓝专用品种“冬冠1号”在1月份冻害温度下电解质渗漏率、MDA 含量较低，SOD仍保持较高活性，表现出较强抗冻性。

     

    Abstract: Freezing resistance of 4 cabbages varieties was studied under open-field winter growth seasons． The results show that the electrolyte leakage and content of ma1ondia1dehyde(MDA)in cabbage leaves increase as temperature declines，especially the electrolyte leakage in “8398”and “8132”declines by 50％ in January，and membrane system is damaged seriously．The activity of superoxide dismutase(SOD)of“8398”，“8132”and“Jingfeng No．1”declines quickly under freezing temperature conditions．The peroxides(POD) activity increases as temperature declines under freezing stress．But the electrolyte leakage and content of ma1ondia1dehyde(MDA)in“Donggua No．1”are lower than those of “8398”，“8132”and“Jingfeng No．1”．Under freezing stress in January，the activity of SOD and POD in“Donguan No．1”still remains higher．It is indicated that freeze-resistance of“Dongguan No．1” is strong．

     

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