EMS诱变处理金花菜种子条件分析  

Analysis of EMS Mutation Conditions on Medicago polymorpha Seed

作　　者：胡志峰[1] 魏臻武[1] 唐嘉[1] 

机构地区：[1]扬州大学动物科学与技术学院/扬州大学草业科学研究所,江苏扬州225009

出　　处：《草地学报》2017年第2期361-365,共5页Acta Agrestia Sinica

基　　金：国家自然科学基金(30972136);江苏省科技支撑项目(BE2012340);中央财政农技推广项目TG(16)008;江苏省产学研前瞻性联合研究项目(BY2016069-12)资助

摘　　要：为确定EMS诱变处理金花菜(Medicago polymorpha L.)种子的最适条件,获得化学诱变性状稳定的突变系和育种后代。本试验以淮扬金花菜种子为材料,EMS为诱变剂,采用5个甲基磺酸乙酯(EMS)诱变浓度(0.1%,0.3%,0.5%,0.7%和0.9%),3个处理时间(3h,6h和9h),分别对诱变后种子发芽率、胚根长度、移栽成活率及相对越冬率进行分析。研究发现EMS诱变处理对淮扬金花菜发芽率和胚根伸长有抑制效应,且EMS诱变浓度抑制效应大于诱变时间;EMS处理对淮扬金花菜移栽成活率影响较小;低浓度EMS处理后淮扬金花菜保持了较高的越冬率,但高浓度EMS抑制金花菜的越冬。0.7%EMS 9h组合和0.9%EMS 6h组合的发芽率均接近50%,最终确定0.7%EMS诱变处理9h和0.9%EMS诱变处理6h的组合为金花菜种子最佳诱变条件。To optimize the condition of EMS mutagenesis of burclover（Medicago polymorpha L.）seeds,obtain mutation lines with stable behavior,we used Huaiyang burclover seed as plant material,and treated it with Ethyl methyl sulfonate（EMS）,Five ethyl methane sulfonate（EMS）concentrations（0.1%,0.3%,0.5%,0.7% and 0.9%）,and 3processing time（3h,6hand 9h）were used for mutagenesis.The germination rate and radicle length,transplanting survival rate and relative survival rate were analyzed.The results showed that EMS mutagenesis time and concentration of the Huaiyang burclover germination rate and radicle length had an inhibitive effect,and the inhibition effect of the concentration of EMS greater than the treatment time;EMS treatment had little effect on the survival rate of transplanting Huaiyang burclove;under low concentration of EMS treatment,Huaiyang burclover maintained higher survival rate;high concentration of EMS inhibited burclover overwintering.The treatment of 0.7% EMS for 9h and 0.9% EMS for 6hgot a seed germination rate closed to 50%,and these two treatments were optimized for burclover seed mutatigenesis.

关 键 词：甲基磺酸乙酯(EMS) 金花菜 化学诱变 突变体 半致死条件 

分 类 号：S336[农业科学—作物遗传育种]