外源脯氨酸对干旱胁迫下番茄幼苗生长发育的影响

打开文本图片集

中图分类号：S641.2 文献标识码：A DOI编码：10.3969/j.issn.1006—6500.2025.06.009

Effects of Exogenous Proline on Growth and Development of Tomato Seedlings under Drought Stress

YANShujie，KONG Chao，JIANG Le， ZHANGQuanyan（SchlofesoucsdEontiiUsityKeybratoyofSoildateroseationdEioealoetiin Shandong province，Linyi，Shandong 276ooo，China）

Abstract： Inordertoinvestigatehowexogenousprolineregulatesthegrowthandphsiologicalcharacteristicsof tomatosdlingsunderdrought，prolinewasusedforfolarsprayingoftomatoseedlings，andonecontrolgroupwithnormalwateringandfivetreatment groups withdroughtanddiferentconcenrationsofprolinesprayed（，15，0，45，60mg·L-l）weresetuptostudythechangesin growthconditios，clorohyllntet，alonaldehdententdelativeectrcalconductivityoftmatosedlingferplcationof prolineunderdroughtstress.Theresultsshowed thattheplantheight，stemthickness，fresh massroot-crownratioand chlorophyllontentoftomatoseedlingsincreasedsignificantlywiththeincreaseofexternallappedprolineconcentratioafr droughtreatment，indicatingthatprolinecouldsignificantlyimprovethegrowthconditionofsedlingsunderdroughtstressandhda postiveefectonpromotingsdlinggowth.Throughthedeteinationofalondialdehdecontentandelativeconductivityfound thatwiththeeseofeallldolioeaiotetsodasingtrdiaigaoli efectivelyreducethedroughtstresonthedamageoftomatosedlingcellmembranesandimprovethedroughtresistanceof toato seedings.Incoclusion，theapproprateoncetrationofxogenouspolinecanancetedoughtrsistanceoftomatosdlingsby promotinggrowthnhancingphotosnthesisandprotectingcellmembranes，andtesultsoftisstudyprovideatechnicalerence for improving the quality and efficiency of tomato under drought stress.

Key words： drought stress; Solanum lycopersicum ; exogenous proline

番茄起源于南美洲热带地区，是一种喜温性茄科作物，可与多种农作物轮作、间作和套作。（剩余11236字）