| 摘要: |
| 为了探讨BTH对小麦白粉病抗性的诱导以及抗性的部分生理机制，分别用0.01，0.05，0.1，0.2，0.4，0.8和1.6 mmol/L苯并噻二唑（BTH）溶液处理小麦幼苗2 d后接种白粉病菌，结果表明，浓度大于0.2 mmol/L的BTH处理均能显著诱导小麦幼苗产生对白粉病的抗性；用0.4 mmol/L BTH处理小麦幼苗后间隔不同时间接种白粉病菌，表明BTH诱导小麦产生对白粉病的抗性持久期在7 d以上；对BTH处理或接种白粉病菌的幼苗几丁质酶和β-1，3-葡聚糖酶活性的测定结果表明，BTH处理可系统性地增强这2种酶的活性且与小麦对白粉病的诱导抗性密切相关。 |
| 关键词: 小麦白粉病 诱导抗性 几丁质酶 β-1,3-葡聚糖酶 |
| DOI： |
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| 基金项目:西北农林科技大学青年学术骨干支持计划项目；杨凌农业生物技术育种中心资助项目 |
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| Relationship between induced resistance to Blumeriagraminisf. sp.tritici by BTH and activities of chitinase and β-1,3-glucanase in wheat |
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| Abstract: |
| Benzothiadiazole (BTH) induced resistance to Blumeriagraminisf.sp.tritici in wheat seedlings and physiology mechanism were studied.0.01,0.05,0.1,0.2,0.4,0.8 and 1.6 mmol/L BTH were sprayed on wheat seedling 2 days before inoculation with Blumeriagraminisf.sp.tritici.Results showed that concentration over 0.2 mmol/L BTH could induce resistance against powdery mildew.Expression of resistance in the leaves could last at least 7 days.Chitinase and β-1,3-glucanase activities analysis showed that induced resistance in wheat was accompanied by a systemic increase in both enzymes activities.Two enzymes were related to resistance to powdery mildew in wheat. |
| Key words: wheat powdery mildew BTH induced resistance chitinase β-1,3-glucanase |
