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Uticaj suše na fiziološke odgovore biljaka kukuruza dobijenih iz semena različite starosti

dc.creatorProkić, Ljiljana
dc.creatorLužaić, Anja
dc.creatorŽivanović, Bojana
dc.creatorJanošević, Dušica
dc.creatorAnđelković, Violeta
dc.date.accessioned2020-07-08T13:03:41Z
dc.date.available2020-07-08T13:03:41Z
dc.date.issued2019
dc.identifier.issn0354-5881
dc.identifier.urihttp://rik.mrizp.rs/handle/123456789/781
dc.description.abstractDrought is one of the main consequences of climate change that negatively affects plant growth and development, which in turn leads to a reduction in yield. The objective of this study was to investigate the effects of the physiological responses to the drought stress of maize plants (population IP3722), obtained from seeds of different ages (originating from 2012. and 2016) and different previous experience (the seeds formed in 2012. were more exposed to drought than in 2016.). Two populations responded to drought treatment by a significant decrease of shoot fresh and dry weight, this was followed with decrease leaf area and transpiration rate. Drought tre-atments enabled induction and differentiation of chemical signals of drought (abscisic acid-ABA and xylem pH) and hydraulic signals (leaf water potential), and monitoring of their activity on stomatal conductance. The data showed that hydraulic signals have the same impact on stomatal reactions in the D2012 and D2016 treatments. They also indicated that the chemical signal of ABA works toward stomatal closure, but that the effect depends on whether it originates from the leaf or the root. Leaf-originating ABA had more effect on the closure of D2012 stomata, while root-ori-ginating ABA and pH was more active in the D2016sr
dc.description.abstractSuša nastaje kao posledica klimatskih promena, koja negativno utiče na rast i razvoj biljaka, a to dovodi do smanjenja prinosa. Cilj ovog rada bio je da se istraži efekat suše na fiziološke reakcije biljaka kukuruza (IP3722), koje su dobijene iz semena različite starosti (regenerisano 2012. i 2016.) i različitih prethodnih iskustava (semena koja su formirana 2012. su bila u većoj meri izložena suši nego ona iz 2016.). Suša je kod oba uzorka dovela do smanjenja sveže i suve mase nadzemnog dela biljke, što je bilo praćeno opadanjem lisne površine i stomatalne provod-ljivosti. Tretmanom suše su indukovani hemijski signali (ABA i pH) i hidraulički signal (vodni potencijal), koji su uticali na provodljivost stoma. Podaci su pokazali da hidraulički signal ima podjednak udeo na zatvaranje stoma u tretmanu D2012 i D2016. Takođe, ABA kao hemijski signal dovodi do zatvaranja stoma, ali ovaj efekat zavisi od toga da li ABA potiče iz korena ili lista. ABA poreklom iz lista je imala značajniji doprinos u zatvaranju stoma kod D2012, dok ABA poreklom iz korena i pH kod tretmana D2016.sr
dc.language.isosrsr
dc.language.isoensr
dc.publisherBelgrade : Serbian Association of Plant Breedings and Seed Producerssr
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/43010/RS//sr
dc.relationinfo:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/31005/RS//sr
dc.rightsopenAccesssr
dc.sourceSelekcija i semenarstvosr
dc.subjectshootsr
dc.subjectleaf areasr
dc.subjectwater potentialsr
dc.subjectpHsr
dc.subjectABAsr
dc.subjectnadzemni deosr
dc.subjectlisna površinasr
dc.subjectvodni potencijalsr
dc.subjectpHsr
dc.subjectABAsr
dc.titleThe effect of drought stress on physiological responses of maize plants originating from seeds of different agessr
dc.titleUticaj suše na fiziološke odgovore biljaka kukuruza dobijenih iz semena različite starostisr
dc.typearticlesr
dc.rights.licenseBYsr
dc.rights.holderCC BY-SAsr
dc.citation.issue2
dc.citation.spage9
dc.citation.epage16
dc.identifier.doi10.5937/SelSem1902009P
dc.identifier.fulltexthttp://rik.mrizp.rs/bitstream/id/4151/2019-Selekcija_i_semenarstvo_25-2-9-16_0354-58811902009P.pdf
dc.type.versionpublishedVersionsr


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