| 苯并噻二唑( BTH)诱导黄瓜幼苗对霜霉病抗性的研究 |
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| 引用本文： | 李玉红,程智慧,陈鹏,陈晓光.苯并噻二唑( BTH)诱导黄瓜幼苗对霜霉病抗性的研究[J].园艺学报,2006,33(2):278-282. |
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| 作者姓名： | 李玉红 程智慧 陈鹏 陈晓光 |
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| 作者单位： | (西北农林科技大学园艺学院, 杨凌712100; 西北农林科技大学生命科学学院, 杨凌712100) |
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| 基金项目： | 国家科技攻关项目;西北农林科技大学校科研和教改项目;西北农林科技大学校科研和教改项目 |
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| 摘 要： | 用0.5 mmol/L BTH (苯并噻二唑) 溶液在接种黄瓜霜霉病菌前4、8、12、24、48、96、168 h (7 d) 和接种后2、4 d处理二叶期的黄瓜幼苗, 结果表明BTH对霜霉病菌无直接的抑制作用, 但能诱导黄瓜幼苗对霜霉病产生局部和系统的抗性, 系统抗性的表达在处理后48 h产生并持续7 d以上。几丁质酶和β-1,3-葡聚糖酶活性测定结果表明, BTH处理可系统性地增强这两种酶的活性, 且与黄瓜对霜霉病的诱导抗性密切相关。
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| 关 键 词： | 黄瓜 霜霉病 BTH 诱导抗性 几丁质酶 β-1 3-葡聚糖酶 |
| 文章编号： | 0513-353X（2006）02-0278-05 |
| 收稿时间： | 2005-04-13 |
| 修稿时间： | 2005-04-132005-07-11 |
Studies on Induction Resistance to Psedoperonospora cubensis by BTH in Cucumber Seedlings |
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| Li Yuhong,Cheng Zhihui,Chen Peng,Chen Xiaoguang.Studies on Induction Resistance to Psedoperonospora cubensis by BTH in Cucumber Seedlings[J].Acta Horticulturae Sinica,2006,33(2):278-282. |
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| Authors: | Li Yuhong Cheng Zhihui Chen Peng Chen Xiaoguang |
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| Institution: | ( College of Horticulture, Northwest A & F University, Yangling 712100, China; College of Life Sciences, Northwest A & F University, Yangling 712100, China) |
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| Abstract: | 0.5 mmol/L BTH was used in seedlingwith two true leaves 4, 8 and 12 h, or 1, 2, 4 and 7 days before or 4 and 2 days after inoculation with P.cubensis. Results obtained showed that BTH had not a curative effect but could induce local and systemic resistance in cucumber against the downymildew. Expression of systemic resistance in leaves was detectable 48 h after treatment and continued for at least 7 days. Chitinase and β-1,3-glucanase activities analysis showed that induced resistance in cucumber leaves wasaccompanied by a systemic increasing in both enzymes activities. Two enzymes were related to resistance to downy mildew in cucumber. |
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| Keywords: | BTH |
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