Quantitative evaluation of silicon applications on wheat response to salinity: changes in photosynthetic pigments, chlorophyll fluorescence parameters, yield and yield components

dc.contributor.authorFeghhenabi, Faride
dc.contributor.authorHadi, Hashem
dc.contributor.authorKhodaverdiloo, Habib
dc.contributor.authorvan Genuchten, Martinus Th [UNESP]
dc.contributor.authorLake, Lachlan
dc.contributor.institutionUrmia Univ
dc.contributor.institutionUniv Utrecht
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniv Adelaide
dc.date.accessioned2022-04-28T17:21:54Z
dc.date.available2022-04-28T17:21:54Z
dc.date.issued2022-04-04
dc.description.abstractContext. Salinity is a major cause of yield loss in wheat globally. Aims and Methods. To investigate the potential of silicon to minimise the effect of salinity in wheat, experiments were conducted using outdoor pots subjected to seven salinity treatments. Silicon (as potassium silicate K2SiO3) was applied as both a priming agent and foliar spray. Selected response functions were used to quantify wheat response to salinity as affected by silicon application. Key results. Concentration of chlorophyll a, chlorophyll b and carotenoid decreased by 4.2, 3.6 and 1.4 mg/g FW respectively with increasing salinity up to an electrical conductivity of 14 dS/m. Increasing salinity levels increased maximum variable chlorophyll fluorescence yield in a dark-adapted state and decreased the photochemical quenching coefficient, the non-photochemical quenching coefficient, nonphotochemical quenching, actual quantum yield of PSII electron transport in the light-adapted state, and the apparent photosynthetic electron transport rate. The maximal efficiency of PSII photochemistry in the dark-adapted state was not significantly influenced by salinity. The response functions showed that the salinity threshold value and the salinity at which a given trait was reduced by 50% (EC50) were 5.7 and 12.1 dS/m, respectively. Conclusions, The combined treatment of silicon (priming x foliar spray) was found to be the most effective, increasing salinity threshold value and EC50 by 32 and 2% respectively. implications. These findings give insight into the effects of salinity on wheat and demonstrate the potential of silicon applications to promote crop health in saline environments.en
dc.description.affiliationUrmia Univ, Dept Agron & Plant Breeding, Orumiyeh, Iran
dc.description.affiliationUrmia Univ, Dept Soil Sci, Orumiyeh, Iran
dc.description.affiliationUniv Utrecht, Dept Earth Sci, Utrecht, Netherlands
dc.description.affiliationSao Paulo State Univ, Ctr Environm Studies, CEA, Rio Claro, SP, Brazil
dc.description.affiliationUniv Adelaide, Sch Agr, South Australian Res & Dev Inst, Waite Campus, Urrbrae, SA, Australia
dc.description.affiliationUnespSao Paulo State Univ, Ctr Environm Studies, CEA, Rio Claro, SP, Brazil
dc.format.extent13
dc.identifierhttp://dx.doi.org/10.1071/CP21676
dc.identifier.citationCrop & Pasture Science. Clayton: Csiro Publishing, 13 p., 2022.
dc.identifier.doi10.1071/CP21676
dc.identifier.issn1836-0947
dc.identifier.urihttp://hdl.handle.net/11449/218595
dc.identifier.wosWOS:000777660900001
dc.language.isoeng
dc.publisherCsiro Publishing
dc.relation.ispartofCrop & Pasture Science
dc.sourceWeb of Science
dc.subjectabiotic stresses
dc.subjectchlorophyll fluorescence
dc.subjectfoliar spray
dc.subjectplant production
dc.subjectpriming
dc.subjectreduction function
dc.subjectsoil salinity
dc.subjectyield
dc.titleQuantitative evaluation of silicon applications on wheat response to salinity: changes in photosynthetic pigments, chlorophyll fluorescence parameters, yield and yield componentsen
dc.typeArtigo
dcterms.rightsHolderCsiro Publishing
unesp.author.orcid0000-0003-4228-7188[2]

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