添加水杨酸对干旱胁迫下3种豆科植物的影响  

The Effect of Adding Salicylic Acid on Three Leguminous Plants under Drought Stress

作　　者：侯董亮 陈卫权 钟方玖 汪伟 熊波 彭嘉 宋鑫 HOU Dongliang;CHEN Weiquan;ZHONG Fangjiu;WANG Wei;XIONG Bo;PENG Jia;SONG Xin(Yichun Academy of Sciences,Yichun Jiangxi 336000,China;Yichun Forestry Bureau,Yichun Jiangxi 336000,China;College of Life Sciences,Resources and Environment,Yichun University,Yichun Jiangxi 336000,China)

机构地区：[1]宜春市科学院,江西宜春336000 [2]宜春市林业局,江西宜春336000 [3]宜春学院生命科学与资源环境学院,江西宜春336000

出　　处：《绿洲农业科学与工程》2025年第1期21-28,共8页Oasis Agriculture Science and Engineering

基　　金：宜春市农业科技计划项目一不同生草类型对橘园保水增肥效应的比较研究;江西省教育厅科技项目(GJJ2201747)。

摘　　要：研究3种豆科植物在不同浓度模拟干旱胁迫下的生理响应。以紫云英(Astragalus sinicus L.)紫花苜蓿(Medicago sativaL.)白三叶(Trifolium repens L.)为材料,将材料分为2组,一组为无水杨酸处理组,另一组用0.5mmol·L^(-1)水杨酸(salicylicacid,SA)处理。用聚乙二醇(polyethylene glycol,PEG)浓度(0、10%)模拟干旱对3种豆科植物幼苗进行处理。研究发现,随着PEG浓度的增加,3种豆科植物幼苗的鲜重均有所下降,但干重的变化因植物种类而异。水杨酸处理对提高紫花苜蓿和白三叶的干重有积极作用,但对紫云英的干重有轻微的负面影响。叶绿素含量在干旱肋迫下呈现上升趋势,但水杨酸处理下有所下降。The study investigates the physiological responses of three leguminous plants under simulated drought stress of different concentrations.Using Astragalus sinicus L.,Medicago sativa L.,and Trifolium repens L.as materials,the materials were divided into two groups:one group without salicylic acid treatment,and the other group treated with 0.5 mmol-L^(-1) salicylic acid(SA).Two concentrations of polyethylene glycol(PEG),0%and 10%,were used to simulate drought stress on seedlings of the three leguminous plants.The study found that as the concentration of PEG increased,the fresh weight of seedlings of the three leguminous plants all decreased,but the change in dry weight varied among plant species.Salicylic acid treatment had a positive effect on improving the dry weight of Medicago sativa and Trifolium repens,but had a slight negative impact on the dry weight of Astragalus sinicus.The chlorophyll content showed an increasing trend under drought stress,but it decreased under salicylic acid treatment.

关 键 词：干旱胁迫 豆科植物 水杨酸 干鲜重 酶活性 可溶性糖 

分 类 号：X173[环境科学与工程—环境科学]