野生种醋栗番茄的芽期耐旱性鉴定  

Evaluation of Drought Tolerance of Wild Species Solanum pimpinellifolium at Germination Stage

作　　者：高浩冉 朱璨 李君明[2] 李灵芝[1] 李鑫 刘磊[2] 黄泽军[2] 王孝宣[2] 杜永臣[2] 国艳梅[2] GAO Haoran;ZHU Can;LI Junming;LI Lingzhi;LI Xin;LIU Lei;HUANG Zejun;WANG Xiaoxuan;DU Yongchen;GUO Yanmei(College of Horticulture,Shanxi Agricultural University,Taigu 030801,Shanxi,China;Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,State Key Laboratory of Vegetable Biobreeding,Beijing 100081,China)

机构地区：[1]山西农业大学园艺学院,山西太谷030801 [2]中国农业科学院蔬菜花卉研究所,蔬菜生物育种全国重点实验室,北京100081

出　　处：《中国蔬菜》2025年第4期72-79,共8页China Vegetables

基　　金：河南重点研发专项(221111110800);国家自然科学基金项目(31991185);农业农村部园艺作物生物学与种质创制重点实验室项目(2018YFD1000801);中国农业科学院科技创新工程项目(CAASASTIP-IVFCAAS)。

摘　　要：全球淡水资源呈现逐年减少的趋势,干旱威胁作物生产。番茄作物喜水肥,干旱胁迫严重妨碍番茄作物的生长发育及产量,耐旱遗传改良对于确保番茄作物稳产、丰产具有重要意义。采用隶属函数法,对收集的具有全球代表性的44份野生种醋栗番茄种质进行了芽期耐旱性综合评价。结果表明,醋栗番茄较栽培种具有明显的耐旱性,共筛选出耐旱种质30份,其中9份资源表现极强的耐旱性,在15%的PEG-6000溶液浓度条件下,相对发芽率仍可以达100%。同时,通过构建进化树和地理来源分析表明,相较于其他种质,干旱敏感种质之间亲缘关系更近,且其来源地的纬度与海拔相较于耐旱种质更为集中,说明耐旱性是野生醋栗番茄在适应复杂野外环境过程中逐渐进化出的抗逆性状。研究结果为番茄耐旱遗传改良及机制解析奠定了一定的基础。Global freshwater resources are exhibiting a progressive decline,with drought posing a significant threat to crop production.Tomato(Solanum lycopersicum),a water-demanding and nutrientdemanding crop,experiences severe developmental and yield constraints under drought stress.Genetic improvement for drought tolerance is therefore critical to ensure stable and high-yielding tomato production.In this study,the membership function method was used to comprehensively evaluate the drought tolerance of 44 globally representative Solanum pimpinellifolium germplasms collected at the germination stage.Results demonstrated that the wild Solanum pimpinellifolium exhibits markedly superior drought tolerance compared to cultivated varieties.Among the evaluated germplasms,30 germplasms were identified as drought-tolerant,with 9 germplasms displaying exceptional tolerance.Notably,these 9 germplasms maintained 100%relative germination rates under the condition of 15%PEG-6000 concentration.Phylogenetic tree construction and geographical origin analysis further revealed that drought-sensitive germplasms clustered more closely in genetic relatedness compared to drought-tolerant counterparts.Their geographic origins were also more concentrated in terms of latitude and altitude,suggesting that indicating that drought tolerance is an adaptive trait gradually evolved in the process of adapting to various wild environments.These findings provide a foundation for elucidating drought tolerance mechanisms and advancing genetic enhancement in cultivated tomato.

关 键 词：醋栗番茄 芽期 耐旱性 评价 

分 类 号：S641.1[农业科学—蔬菜学]