Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/341919
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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampMenossi, Marcelo-
dc.typeArtigopt_BR
dc.titleInter‐relationship between photosynthetic efficiency, Δ13C, antioxidant activity and sugarcane yield under drought stress in field conditionspt_BR
dc.contributor.authorEndres, Lauricio-
dc.contributor.authordos Santos, Claudiana Moura-
dc.contributor.authorSilva, Jose Vieira-
dc.contributor.authorde Souza Barbosa, Geraldo Verissimo-
dc.contributor.authorJanuario Silva, Andre Lucas-
dc.contributor.authorFroehlich, Angela-
dc.contributor.authorTeixeira, Marcelo Menossi-
dc.subjectPeroxidação de lipídeospt_BR
dc.subject.otherlanguageLipid peroxidationpt_BR
dc.description.abstractDrought is one of the major climatic factors that reduce crop yields in cultivated areas around the world, and studies on physiological responses may help in the selection of drought tolerant genotypes. Thus, this work aimed to correlate gas exchange, photosynthetic efficiency, carbon isotope discrimination (Delta C-13) and antioxidant activity in sugarcane varieties submitted to water stress under field conditions. Six sugarcane varieties were submitted to drought stress in three development stages: tillering, intense growth and ripening. In all varieties, the photosynthetic apparatus was severely affected by drought, with a reduction in photosynthetic rate and chlorophyll content. During the tillering stage, reductions in gas exchange and increase in Delta C-13 and bundle sheath leakiness (phi) were observed. In the intense growth stage, water stress caused increases in leaf temperature, intrinsic water use efficiency, antioxidant enzyme activity and lipid peroxidation, and reductions in stomatal conductance and transpiration in the RB72454, RB855113 and RB855536 varieties. However, the RB92579 variety maintained a better physiological homeostasis at all development stages and presented higher stalks yielding when submitted to drought. This work suggests that screen sugarcane genotype to drought stress should be performed during the intense growth stage, when plants are more sensitive to drought conditionspt_BR
dc.relation.ispartofJournal of agronomy and crop sciencept_BR
dc.relation.ispartofabbreviationJ. agron. crop sci.pt_BR
dc.publisher.cityBerlinpt_BR
dc.publisher.countryAlemanhapt_BR
dc.publisherWileypt_BR
dc.date.issued2019-
dc.date.monthofcirculationOct.pt_BR
dc.language.isoengpt_BR
dc.description.volume205pt_BR
dc.description.issuenumber5pt_BR
dc.description.firstpage433pt_BR
dc.description.lastpage446pt_BR
dc.rightsFechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn0931-2250pt_BR
dc.identifier.eissn1439-037Xpt_BR
dc.identifier.doi10.1111/jac.12336pt_BR
dc.identifier.urlhttps://onlinelibrary.wiley.com/doi/full/10.1111/jac.12336pt_BR
dc.date.available2020-05-21T15:29:14Z-
dc.date.accessioned2020-05-21T15:29:14Z-
dc.description.provenanceSubmitted by Mariana Aparecida Azevedo (mary1@unicamp.br) on 2020-05-21T15:29:14Z No. of bitstreams: 0. Added 1 bitstream(s) on 2020-08-27T19:16:59Z : No. of bitstreams: 1 000484622600001.pdf: 2160567 bytes, checksum: 80f335be76cc89cef1e4a2fd9920e133 (MD5)en
dc.description.provenanceMade available in DSpace on 2020-05-21T15:29:14Z (GMT). No. of bitstreams: 0 Previous issue date: 2019en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/341919-
dc.contributor.departmentDepartamento de Genética, Evolução, Microbiologia e Imunologiapt_BR
dc.contributor.unidadeInstituto de Biologiapt_BR
dc.subject.keywordCarbon isotope discriminationpt_BR
dc.subject.keywordPhotosynthesispt_BR
dc.subject.keywordSaccharum spppt_BR
dc.identifier.source000484622600001pt_BR
dc.creator.orcid0000-0002-9211-3787pt_BR
dc.type.formArtigo de revisãopt_BR
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