干旱胁迫对低温保存后血人参种子萌发及种苗生长的影响  

The Impact of Drought Stress on Seed Germination and Seedling Growth of Indigofera stachyodes after Cold Storage

作　　者：杨武海 付皎 张娜 吴之坤 YANG Wuhai;FU Jiao;ZHANG Na;WU Zhikun(Guizhou University of Traditional Chinese Medicine,Guiyang 550025,China;Tongren Hospital of Traditional Chinese Medicine,Tongren Guizhou 554300,China)

机构地区：[1]贵州中医药大学,贵阳550025 [2]铜仁市中医院,贵州铜仁554300

出　　处：《耕作与栽培》2024年第6期12-16,共5页Tillage and Cultivation

基　　金：国家自然科学基金委员会-贵州省人民政府联合基金项目(U 1812403-2);贵州省科技计划项目(黔科中引地[2022]4016)。

摘　　要：为了探讨干旱胁迫对经低温(4℃)储藏的血人参种子萌发及种苗生长的影响,设置不同干旱环境对血人参种子及种苗进行胁迫研究。结果表明,当PEG-6000浓度逐渐升高,血人参种子的发芽率、发芽势及发芽指数均呈下降趋势;随着PEG-6000浓度的增加,血人参种苗苗长、主根长度、须根数及鲜重均呈先升高后下降的趋势。综合分析表明,随着PEG-6000浓度的升高,血人参种子发芽率受到显著抑制,当PEG-6000浓度为25%时,血人参种子的萌发能力完全被抑制;PEG-6000浓度为5%~10%时,可以促进血人参种苗生长发育。To investigate the effect of drought stress on the growth of Indigofera stachyodes seeds and seedlings after 4℃cold storage,a drought stress experiment was conducted on I.stachyodes seeds under different drought environments.The results showed that with the increase of PEG-6000 concentration,the germination rate,germination potential,and germination index of the seeds decreased.With the increase of PEG-6000 concentration,the seedling length,main root length,number of fibrous roots,and fresh weight of I.stachyodes seedlings showed a trend of first increasing and then decreasing.Comprehensive analysis showed that the germination rate of I.stachyodes seeds was significantly inhibited with the increase of PEG-6000 concentration.When the PEG-6000 concentration reached 25%,the germination ability of I.stachyodes seeds was completely inhibited.When the PEG-6000 concentration was 5%to 10%,it promoted the growth and development of I.stachyodes seedlings.

关 键 词：血人参 干旱胁迫 种子萌发 幼苗生长 

分 类 号：S567.19[农业科学—中草药栽培]