昭通本地自育玉米新品种苗期抗旱性研究

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关键词玉米；苗期；抗旱性；生理生化指木中图分类号 S513 文献标识码A文章编号 0517-6611（2025）08-0029-04doi：10.3969/j.issn.0517-6611.2025.08.007开放科学（资源服务）标识码（OSID）：

AbstractObeie]emaevarietisithtrodouhtstaceatthsdlingstageereseleed，ostofurtroee supportlevelofthaidustrydevelopmentinthelcalmoutaindrylandandhanceitsompetitivens.Metd]Eightnaevarieties，ZhaohuangNo.10，No.12，No.14，No.16，No.18，No.22，No.26andNo.36，wereselectedandculturedfor7，4adda. Theplanteight，rootlngthandotnumberweremeasuredandcomparedrespectivelyWenonseedlingsgrewtothreeleaves，theywere subjected to drought stress with 1 5 % PEG-60o0 solution. Chlorophyll value，carotenoid content，MAD content and soluble protein content were measuredat1，and3days，spectively.esult]Thesdyshowdthatafterdroughtstress，thechloropyllontentofZaoang18 showedacontinuousdowwardtrendwithincreasingtreatmenttime，thecarotenoidcontentofZhaouang18and36showedacontiuous downwardtredwithicreasigtreatmenttie，thesolubleproteicontentofZhaouang12and16showedacontiuousdowwardrendwith increasing treatmentti，andteDcontentofZaohuang14and16ontiuedtoicreasewitincreasingtrestie.Tesevisae sensitivetodroughtstressCoclusionAmong te8maizevarities，Zhaouang22，nd26avethestrogestdroughtresistancuring the seedling stage.

Key WordsMaize；Seedling stage；Drought resistance；Physiological and biochemical indicators

玉米是世界上最重要的粮食作物之一，因其高产、营养物质丰富且用途广泛，被誉为高产之王、饲料之王、加工原料之王。（剩余6007字）