| 冬小麦抗旱性与膜脂过氧化的关系及其氮素调控机理 |
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| 引用本文： | 苟升学.冬小麦抗旱性与膜脂过氧化的关系及其氮素调控机理[J].中国农学通报,2009,25(20):149-153. |
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| 作者姓名： | 苟升学 |
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| 作者单位： | 陕西省杂交油菜研究中心,陕西大荔,715105 |
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| 基金项目： | 陕西省自然科学基金项目 |
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| 摘 要： | 在大田试验条件下，测定了两个不同抗旱性小麦品种郑麦9023（水地品种，抗旱性差）和长武134（旱地品种，抗旱性强）在不同施氮量条件下拔节期叶片MDA、H2O2含量以及SOD、CAT活性的变化。结果表明，抗旱性和小麦叶片的保护酶活性和膜质伤害物质的含量密切相关，而且受氮素营养的调控。抗旱品种相对不抗旱品种具有较高的SOD和CAT活性，而MDA和H2O2较低；MDA和H2O2含量随施氮量的增加呈现先降后升的趋势，而SOD和CAT则呈相反的变化趋势。
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| 关 键 词： | 驻马店 驻马店 优质 专用小麦 品质区化 |
| 收稿时间： | 2009-03-16 |
| 修稿时间： | 2009-06-09 |
The relationship of drought resistance and cell membrane superoxide of winter wheat mediated by nitrogen |
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| Gou Shengxue.The relationship of drought resistance and cell membrane superoxide of winter wheat mediated by nitrogen[J].Chinese Agricultural Science Bulletin,2009,25(20):149-153. |
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| Authors: | Gou Shengxue |
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| Institution: | Hybrid Rapeseed Research Center of Shaanxi Province |
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| Abstract: | The content MDA and H2O2, the activity of SOD and CAT in the leaf of Zhengmai 9023 (drought-vulnerable wheat variety) and Changwu134 (drought – resistant wheat variety) which applied by difference quantity nitrogenous manure have investigated under field. The result showed that the drought-resistance relate to the leaf protectase activity and cell membrane superoxide significantly, moreover, mediated by nitrogen manure. The drought-resistant wheat variety has the higher protectase activity than drought-vulnerable wheat variety and lower MDA and H2O2 content; the dynamics of MDA and H2O2 content is reduced firstly and than increased as applied nitrogen manure quantity increased, it is contrary to protectase. |
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| Keywords: | winter wheatzz membrane superoxidezz drought-resistancezz nitrogenzz |
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