盐碱胁迫对不同品种燕麦幼苗生理指标的影响  

Effects of Saline-alkali Stress on Physiological Indexes of Oat Seedlings of Different Varieties

作　　者：蒋慧欣 郭婷婷 凌磊 JIANG Huixin;GUO Tingting;LING Lei(School of Biological Engineering,Daqing Normal University,Daqing Heilongjiang 163712;Heilongjiang Key Laboratory of Oilfield Applied Chemistry and Technology,Daqing Heilongjiang 163712)

机构地区：[1]大庆师范学院生物工程学院,黑龙江大庆163712 [2]黑龙江省油田应用化学与技术重点实验室,黑龙江大庆163712

出　　处：《现代农业科技》2025年第5期1-7,10,共8页Modern Agricultural Science and Technology

基　　金：黑龙江省自然科学基金项目(LH2022C001);大学生创新创业训练计划项目(202310235A001);大庆市指导科技计划项目(zd-2023-12);黑龙江省省属高等学校基本科研项目(2023-KYYWF-0026)。

摘　　要：为了探究盐碱胁迫对秦琼和梦龙2个品种燕麦幼苗生理指标的影响,筛选出耐盐碱性较强的品种,以秦琼和梦龙的种子为试验材料,进行盆栽培养,在燕麦苗龄28 d时对其进行盐碱胁迫处理,并测定2个品种燕麦幼苗的叶绿素含量、可溶性糖含量、可溶性蛋白质含量、丙二醛含量、脯氨酸含量以及过氧化物酶活性。结果表明,随着盐碱胁迫浓度的逐渐升高,2个品种燕麦幼苗叶绿素含量均呈现下降趋势,可溶性糖含量、可溶性蛋白质含量、丙二醛含量、脯氨酸含量以及过氧化物酶活性则均呈现逐渐升高的趋势。由此表明,燕麦在应对盐碱胁迫时,通过调节内部代谢和应激反应来增强自身的抗逆性。通过对比分析秦琼与梦龙各项生理指标的数据可知,秦琼耐盐碱性较梦龙强,为耐盐碱性较强的燕麦品种。This study aimed to explore the effects of saline-alkali stress on physiological indexes of oat seedlings of two varieties(Qinqiong and Menglong),and screen out varieties with stronger saline-alkali tolerance,seeds of Qinqiong and Menglong were used as experimental materials for pot culture.Saline-alkali stress treatment was applied to the 28-day-old oat seedlings,and the chlorophyll content,soluble sugar content,soluble protein content,malondialdehyde(MDA)content,proline content,and peroxidase(POD)activity were measured.The results showed that with the gradual increase of saline-alkali stress concentration,the chlorophyll content of oat seedlings of both varieties showed a downward trend,while the soluble sugar content,soluble protein content,MDA content,proline content,and POD activity all showed a gradual upward trend.This indicates that oats enhance their stress resistance by regulating internal metabolism and stress responses when facing saline-alkali stress.By comparing and analyzing the data of various physiological indexes of Qinqiong and Menglong,it can be seen that Qinqiong has stronger saline-alkali tolerance than Menglong,and it is an oat variety with stronger saline-alkali tolerance.

关 键 词：燕麦 品种 盐碱胁迫 幼苗 生理指标 

分 类 号：S512.6[农业科学—作物学]