王晓楠,谢冬微,付连双,孙莹璐,李卓夫,栾非时.不同抗寒性冬小麦叶鞘质膜的稳定性表现[J].麦类作物学报,2013,33(3):477 |
不同抗寒性冬小麦叶鞘质膜的稳定性表现 |
Plasma Membrane Stability in Leaf Sheath of Cold area Winter Wheat with Different Cold Resistance |
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DOI:10.7606/j.issn.1009-1041.2013.03.13 |
中文关键词: 冬小麦 抗寒性 保护酶 膜脂过氧化 |
英文关键词:Winter wheat Cold resistance Protective enzyme Plasma membrane peroxidation |
基金项目:黑龙江省博士后基金项目(2010RCB17);东北农业大学博士科研启动基金项目(LBH Z10266);黑龙江省教育厅新农村基金项目。 |
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中文摘要: |
为了解叶鞘质膜稳定性与小麦抗寒性的关系,以返青率不同的4个冬小麦品种(系)为材料,研究寒地冬小麦越冬期叶鞘质膜稳定性变化及其影响因素。结果表明,低温下,冬小麦叶鞘相对电导率与自由水和总水分含量呈显著正相关,丙二醛含量与SOD和POD活性、AsA含量呈显著正相关;封冻后,抗寒性强的冬麦品种(系)的SOD活性和GSH含量显著高于抗寒性弱的品种(系)。在深度封冻期保持叶鞘质膜稳定性有助于增强冬小麦抗寒性。 |
英文摘要: |
Four varieties of winter wheat with different return green rates were used to analyze the plasma membrane stability and the factors that affect cold area winter wheat during winter. The results show that electrical conductivity reflects the degree of plasma membrane damaged under low temperatures was significantly correlated with the free water and the total water content. The malondialdehyde (MDA) content, which reflects the degree of membrane peroxidation, was very significantly correlated with superoxide dismutase (SOD), peroxidase, and ascorbic acid.After freezing period, the SOD activity and glutathione (GSH) content of the winter wheat varieties were relative to their cold resistance. During the deep freezing period, the MDA stability, SOD, GSH, and total water and free water content may be used to identify the cold resistance of winter wheat varieties. |
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