中国草地学报2025，Vol.47Issue(10)：22-33,12.DOI:10.16742/j.zgcdxb.20240482
不同生物菌剂浸种和干旱胁迫对白燕7号种子萌发及幼苗生长的影响
Effects of Microbial Inoculant Treatments and Drought Stress on Seed Germination and Seedling Growth of Baiyan No.7
摘要
Abstract
This study investigated the effects of microbial inoculant seed-soaking treatments on seed germination and seedling growth of oat(Avena sativa L.)cultivar'Baiyan No.7'under drought stress.This study investigated the effects of seed soaking with microbial agents(Bacillus licheniformis,effective microorganisms,and a compound microbial inoculant)on the seed germination and seedling growth of the'Baiyan No.7'cultivar under both water stress simulated by polyethylene glycol(PEG)solutions and alternating temperature conditions(10 h light at 10℃/14 h darkness at 5℃).The results indicated that seed inoculation with bio-agents promoted the seed germination and seedling growth of'Baiyan No.7'under drought stress.Notably,the treatment with Bacillus licheniformis(DY)significantly increased the germination rate,seedling height,and radicle length.Under mild drought stress(-0.2 MPa,-0.4 MPa),germination rate increased,peaking between 2 to 3 days,whereas severe stress(-0.8 MPa,-1.0 MPa)suppressed germination but enhanced stress resistance.At-1.0 MPa,DY-treated seedlings exhibited the highest fresh weight(0.36 g)and soluble protein content(6.25 mg/g),both significantly higher than the control(CK).Correlation analysis revealed strong positive correlations(P<0.01 or P<0.05)among most germination and growth traits,except for malondialdehyde(MDA),which was negatively correlated.Membership function evaluation indicated that all three microbial agents improved drought resistance,with efficacy ranked as DY>compound microbial inoculant>EM consortium.DY treatment demonstrated the strongest effect,supporting its application as a seed priming strategy to enhance germination and reduce seeding requirement.关键词
高海拔地区/生物菌剂/干旱胁迫/萌发指数/隶属函数Key words
High altitude areas/Microbial inoculant/Drought stress/Germination index/Member-ship function分类
农业科技引用本文复制引用
保善存,吕亮雨,刘青青,蔡宗程,李发毅,高佩,张海蓉,付守全,施建军..不同生物菌剂浸种和干旱胁迫对白燕7号种子萌发及幼苗生长的影响[J].中国草地学报,2025,47(10):22-33,12.基金项目
青海省科技特派员专项(2025-NK-P25) （2025-NK-P25）
