| 外源水杨酸对叶用莴苣生化特性的影响 |
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| 引用本文： | 张婷婷,康杰,廉洁,谷建田.外源水杨酸对叶用莴苣生化特性的影响[J].北京农学院学报,2013,28(3). |
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| 作者姓名： | 张婷婷 康杰 廉洁 谷建田 |
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| 作者单位： | 农业应用新技术北京市重点实验室,北京农学院植物科学技术学院,北京102206;农业应用新技术北京市重点实验室,北京农学院植物科学技术学院,北京102206;农业应用新技术北京市重点实验室,北京农学院植物科学技术学院,北京102206;农业应用新技术北京市重点实验室,北京农学院植物科学技术学院,北京102206 |
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| 基金项目： | 北京市教育委员会科技发展面上项目"莴苣热激处理的耐热效应及其生理生化变化的研究"，北京市属高等学校人才强教计划资助项目 |
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| 摘 要： | 在3叶1心时,选取大小一致的莴苣幼苗,定植到日光温室中。分别以不同浓度(0,0.1,0.2,0.4,0.6mmol/L)的外源水杨酸(SA)溶液进行叶面喷施处理,旨在研究外源水杨酸对叶用莴苣幼苗生理生化特性的影响。结果表明:浓度在0.2～0.4mmol/L的SA处理,能显著提高叶用莴苣幼苗叶片的过氧化物酶、过氧化氢酶和超氧物歧化酶的活性,增加可溶性蛋白的含量,降低丙二醛的含量。当处理浓度超过0.4mmol/L或低于0.2mmol/L时,幼苗的生理生化特性,各指标均反应出SA处理的效应呈下降的趋势。
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| 关 键 词： | 水杨酸 叶用莴苣 幼苗 生理指标 |
Effects of exogenous salicylic acid on biochemical properties in lettuce (Lactuca sative) seedlings |
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| ZHANG Tingting
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KANG Jie
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LIAN Jie
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GU Jiantian.Effects of exogenous salicylic acid on biochemical properties in lettuce (Lactuca sative) seedlings[J].Journal of Beijing Agricultural College,2013,28(3). |
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| Authors: | ZHANG Tingting KANG Jie LIAN Jie GU Jiantian |
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| Abstract: | Seedlings of lettuce with three leaves were transplanted into solar greenhouse.Different concentrations(0mmol/L,0.1mmol/L,0.2mmol/L,0.4mmol/L,and 0.6mmol/L of exogenous salicylic acid(SA)were applied by spraying onto the leaves,in order to study the effects on biochemical properties.Results showed that SA with suitable concentrations(from 0.2 mmol/L to 0.4mmol/L)significantly enhanced the activities of POD,CAT and SOD,increased the contents of soluble proteins,as well as reduced the MDA content and conductivity.The treatments appeared weak effects on the above biochemical characteristics when SA concentration was over 0.4mmol/L or below 0.2mmol/L. |
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| Keywords: | salicylic acid lactuca sative seedling biochemical properties |
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