低温胁迫下喷施水杨酸对西红柿幼苗抗寒性的影响  

Effects of Salicylic Acid on Chill-resistance of Tomato Seedings Under Low Temperature Stress

作　　者：张琳[1] 王甲辰[1] 左强[1] 肖强[1] 

机构地区：[1]北京农林科学院植物营养与资源研究所,北京100097

出　　处：《现代农业科技》2010年第10期96-97,100,共3页Modern Agricultural Science and Technology

基　　金：北京市科技计划项目"新型肥料产业化科技保障建设"(D0706004040431)

摘　　要：西红柿幼苗喷施水杨酸后,在8℃的低温胁迫下,对伤害程度指标细胞膜透性和丙二醛含量及主要生理生化指标可溶性蛋白质含量和可溶性糖含量进行研究。结果表明,随着低温时间的延长,水杨酸叶面喷施处理在低温胁迫过程中电导率和丙二醛含量均低于未处理的西红柿幼苗;可溶性蛋白质和可溶糖含量上升趋势均明显大于未喷施处理植株,其中水杨酸浓度3.0 mmol/L处理效果最好。Applying salicylic acid on tomato seedlings after 8 ℃ low temperature stress,the extent damage indicator of the membrane permeability,MDA content,the main physiological and biochemical indicators of soluble protein and soluble sugar content were studied.The results showed that with the low temperature time longer,foliar application of salicylic acid treatment in the conductivity during low temperature stress and MDA content were lower than the untreated tomato seedling;soluble protein and soluble sugar content rised significantly greater than the untreated plant not sprayed.Among them,the best concentration of salicylic acid treatment was 3.0 mmol/L.

关 键 词：低温胁迫 西红柿幼苗 抗寒性 水杨酸 

分 类 号：S641.2[农业科学—蔬菜学]