Barley seed sensitivity to water stress at germination stage

Plant, Soil and Environment

Honsová H.:¹  Hosnedl V.¹ 

关键词: barley;    seed;    vigour;    germination;    laboratory emergence;    stress conditions;    anoxia;    sensitivity;   

DOI  :  

学科分类：农业科学（综合）

来源: Czech Academy of Agricultural Sciences

【 摘 要 】

Barley seed sensitivity to water and anoxia was tested. Standard germination, mean time of germination (MTG), germination in sand wetted by water to 100% water capacity (anoxia) or by hydrogen peroxide (wet conditions without anoxia), germination in 0.75% hydrogen peroxide and laboratory emergence (15 and 20°C) were evaluated. Barley seed responds sensitively to stress conditions during germination. Significant germination decrease was found in abundance of water. Percentage of reduction depends on the variety and on the year of seed production. Extreme values of water sensitivity are in interval 4–90%. At wetted sand by 0.75%, solution of H2O2 the germination was significantly less reduced. That means that barley seed is very sensitive to oxygen deficiency above all and is less injured by quick imbibition. Heterogeneity in seed vigour was demonstrated in laboratory emergence tests. Quick test of germination in 0.75% hydrogen peroxide deserves attention for its high correlation coefficient with the seed laboratory emergence. The results significantly demonstrate a higher sensitivity of deteriorated seed to germination in abiotic stresses conditions. Variability in speed of germination is increasing, which unfavourably extends the mean time of germination.Keywords:barley; seed; vigour; germination; laboratory emergence; stress conditions; anoxia; sensitivitydownload PDFImpact factor (Web of Science �? Thomson Reuters)2016: 1.2255-Year Impact Factor: 1.463SJR (SCImago Journal Rank �? SCOPUS)2016: 0.616 �? Q2 (Soil Science)Similarity CheckAll the submitted manuscripts are checked by the CrossRef Similarity Check.Abstracts are comprised in the databasesISI Web of KnowledgeSM, Web of Science®, Science Citation Index Expanded®, Agricola, Agrindex of AGRIS/FAO databáze, AGRIS International, CAB Abstracts, Current Contents®/Agriculture, Biology and Environmental Sciences, Czech Agricultural and Food Bibliography, Food Science and Technology Abstracts, SCOPUS, TOXLINE Plus, DOAJ (Directory of Open Access Journals), Google Scholar, CNKILicence termsAll content is made freely available for non-commercial purposes, users are allowed to copy and redistribute the material, transform, and build upon the material as long as they cite the source.Open Access PolicyThis journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.ContactMgr. Kateřina SoučkováExecutive Editorphone: + 420 606 402 207e-mail: pseAddressPlant, Soil and EnvironmentCzech Academy of Agricultural SciencesSlezská 7, 120 00 Praha 2,Czech Republic© 2017 Czech Academy of Agricultural Sciences

【 授权许可】

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