氨基寡糖素与外源物质复配对低温环境下高粱种子萌发及幼苗生长的影响  

Complex of Amino-oligosaccharin and Exogenous Substances on the Germination of Sorghum Seeds and the Growth of Seedlings under Low-temperature Conditions

作　　者：周旭帆 李远红 蔡磊 丁婷 周仟慧 段显朋 龙豪好 余坤江 ZHOU Xu-fan;LI Yuan-hong;CAI Lei;DING Ting;ZHOU Qian-hui;DUAN Xian-peng;LONG Hao-hao;YU Kun-jiang(College of Agriculture/Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学农学院,贵州贵阳550025

出　　处：《山东农业大学学报(自然科学版)》2025年第2期214-225,共12页Journal of Shandong Agricultural University:Natural Science Edition

摘　　要：为了探究氨基寡糖素与不同外源物质复配对低温环境下高粱种子萌发、幼苗形态和生理特性的影响,本试验以高粱品种‘红缨子’为材料,采用浸种和水培的方法,探讨氨基寡糖素(AS)和不同浓度的硝普钠(SNP)、γ-氨基丁酸(GABA)、水杨酸(SA)在低温环境下对高粱种子萌发及幼苗株高、根长、基部茎粗、地上部鲜干重、根鲜干重、酶活性、叶绿素荧光参数的影响。试验结果表明:0.70 mmol/L AS+0.60 mmol/L GABA浸种促进种子萌发效果最佳,0.70 mmol/L AS+0.25 mmol/L SA浸种抑制种子萌发。0.70 mmol/L AS+0.03 mmol/LSNP、0.70 mmol/L AS+0.50 mmol/LSA浸种促进幼苗生长。0.70 mmol/LAS+0.03 mmol/LSNP、0.70 mmol/LAS+0.60 mmol/LGABA浸种可以提高高粱的耐冷性。综上所述,0.70 mmol/LAS+0.03 mmol/LSNP是浸种的最适浓度。3.0 mmol/LAS+1.0 mmol/LGABA水培促进幼苗生长的效果最好。综上研究结果可为开发促进高粱种子萌发、幼苗生长以及耐冷性的种子处理剂提供了理论基础。This study aims to explore the effects of amino-oligosaccharin and various exogenous substances on sorghum seed germination,seedling morphology,and physiological characteristics under low-temperature conditions,this study used the sorghum variety'Red Tassel'is used as the research material.Soaking and hydroponic methods are employed to investigate the impact of amino-oligosaccharides(AS)combined with different concentrations of sodium nitroprusside(SNP),γ-aminobutyric acid(GABA),and salicylic acid(SA)on sorghum seed germination,seedling height,root length,basal stem diameter,fresh and dry shoot weight,fresh and dry root weight,enzyme activity,and chlorophyll fluorescence parameters.The findings are as follows:Soaking with 0.70 mmol/L AS+0.60 mmol/L GABA yields the best results for seed germination,while 0.70 mmol/LAS+0.25 mmol/L SA inhibits germination.Soaking with 0.70 mmol/L AS+0.03 mmol/L SNP and 0.70 mmol/L AS+0.50 mmol/L SA promoted seedling growth.Soaking with 0.70 mmol/L AS+0.03 mmol/L SNP and 0.70 mmol/L AS+0.60 mmol/L GABA enhances sorghum cold tolerance.In conclusion,0.70 mmol/LAS+0.03 mmol/LSNP is the optimum concentration for seed dipping.Hydroponic treatment with 3.0 mmol/L AS+1.0 mmol/L GABA shows the best results for promoting seedling growth.These findings provide a theoretical basis for the development of seed treatment agents to enhance seed germination,seedling growth,and cold tolerance in sorghum.

关 键 词：高粱 低温环境 外源物质 复配 种子萌发 幼苗形态 

分 类 号：S514[农业科学—作物学]