不同引发剂对甜菜种子萌发的影响  

Effects of different initiators on the germination of sugar beet seeds

作　　者：孙梦媛 张必周 张辉 张惠忠 张自强 王良 付增娟 赵尚敏 鄂圆圆 郑文哲 SUN Mengyuan;ZHANG Bizhou;ZHANG Hui;ZHANG Huizhong;ZHANG Ziqiang;WANG Liang;FU Zengjuan;ZHAO Shangmin;E Yuanyuan;ZHENG Wenzhe(Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China)

机构地区：[1]内蒙古自治区农牧业科学院,内蒙古呼和浩特010031

出　　处：《北方农业学报》2024年第6期60-67,共8页Journal of Northern Agriculture

基　　金：财政部和农业农村部国家现代农业产业技术体系(糖料)建设项目(CARS-170114);内蒙古自治区“揭榜挂帅”项目(2022JBGS0029)。

摘　　要：【目的】探究不同浓度赤霉素(GA)、褪黑素(MT)和水杨酸(SA)引发处理对甜菜种子萌发及幼苗生长的影响,为甜菜种子引发剂的筛选提供参考。【方法】以国内自育甜菜品种NT39106为试验材料,采用GA(50、100、200和300 mg/L的赤霉素)、MT(50、100、200和300μmol/L的褪黑素)和SA(50、100、200和300 mg/L的水杨酸)引发处理8 h,以未引发处理为对照(CK),分析各处理下甜菜种子发芽及幼苗生长指标。【结果】不同浓度赤霉素(GA)、褪黑素(MT)和水杨酸(SA)引发处理的甜菜种子发芽势和发芽率均显著高于CK(P<0.05)。随着3种引发剂浓度的增加对甜菜种子萌发的促进效果均呈先增加后降低的趋势,其中100 mg/L GA处理的效果最佳,发芽势和发芽率分别高达91.00%、93.67%,其次为SA处理,均优于MT处理。与CK相比,不同浓度的GA、MT(除300μmol/L处理)和SA处理均明显增加了甜菜幼苗的平均芽长和鲜重,尤其是100 mg/L GA处理,其平均芽长和鲜重分别为5.43 cm、0.37g/10株。【结论】100 mg/L赤霉素(GA)引发甜菜种子的萌发效果最佳,对甜菜幼苗的生长有明显促进作用。【Objective】To investigate the effects of different concentrations of gibberellin(GA),melatonin(MT),and salicylic acid(SA)priming treatments on the seeds germination and seedling growth of sugar beet,aiming to provide reference for the screening of sugar beet seed initiators.【Methods】Using the domestically bred sugar beet variety NT39106 as the experimental material,GA(50,100,200 and 300 mg/L),MT(50,100,200 and 300μmol/L)and SA(50,100,200 and 300 mg/L)priming treatments were applied for 8 h,with untreated seeds as the control(CK).Seeds germination and seedling growth parameters of sugar beet were analyzed for each treatment.【Results】The germination potential and germination rate of sugar beet seeds under different concentrations of gibberellin(GA),melatonin(MT),and salicylic acid(SA)treatments were significantly higher than those of the CK(P<0.05).With the increase of the concentration of the three initiators,the promoting effects on sugar beet seed germination exhibited a trend of initially increasing and then decreasing.Among them,the treatment with 100 mg/L GA demonstrated the best results,and the germination potential and germination rate were up to 91.00%and 93.67%,respectively,followed by the SA treatment,both surpassing the MT treatment.Compared with CK,different concentrations of GA,MT(except for the 300 μmol/L treatment) and SA treatments markedly increased the average bud length and fresh weight of sugar beet seedlings,particularly with the 100 mg/L GA treatment,which resulted in average bud length and fresh weight of 5.43 cm and 0.37 g/10 plants,respectively.【Conclusion】Priming sugar beet seeds with 100 mg/L gibberellin(GA)resulted in better germination performance and remarkably promoted seedling growth.

关 键 词：甜菜 引发剂 赤霉素 褪黑素 水杨酸 种子萌发 

分 类 号：S566.3[农业科学—作物学] S482.8