Biochemical and physiological responses of sugarcane cultivars to soil water deficiencies

dc.contributor.authorQueiroz, Rafaela Josemara Barbosa [UNESP]
dc.contributor.authorSantos, Durvalina Maria Mathias dos [UNESP]
dc.contributor.authorFerraudo, Antonio Sergio [UNESP]
dc.contributor.authorCarlin, Samira Domingues
dc.contributor.authorSilva, Marcelo de Almeida [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionAgência Paulista de Tecnologia dos Agronegócios (APTA)
dc.date.accessioned2014-05-20T13:13:03Z
dc.date.available2014-05-20T13:13:03Z
dc.date.issued2011-08-01
dc.description.abstractFor sugarcane (Saccharum spp.) crops, the effects of an environmental stress, especially water deficiency, may cause severe productivity reduction, inferring negatively in the sugarcane industry. The tolerance of two sugarcane cultivars to a lack of water was made by analyzing the levels of the osmoprotectors, trehalose and free proline, and the biometrical variables of their initial growth. Biochemical and physiological responses of the cultivars, when subjected to water stress, were assayed to determine how these plants tolerate drought. The study was conducted in an acclimatized greenhouse (29.7 ± 4.3ºC and 75.0 ± 10.1% relative humidity) during 100 days and was divided into random blocks using a factorial 2 × 3 × 2 design (sugarcane cultivars × water availability × time periods) with four replicates. Forty days after germination, sugarcane was planted in pots (12 dm³) containing topsoil material taken from a medium textured Rhodic Ferralsol, submitted to three levels of water availability (WAS): 55% (control), 40% (moderate stress) and 25% (severe stress), for 60 days. The effect of the WAS on the accumulation of trehalose and free proline was detected in both cultivars, although it was found to be more distinctive for the cv. IAC91-5155. Trehalose and free proline are biochemical and physiological indicators of water deficiency. The cv. IAC91-5155 had altered growth and allocation of biomass when subjected to severe water stress conditions. The univariate and the multivariate analysis of the biochemical and physiological responses, presented by the IAC91-5155 cultivar, indicate relative tolerance to drought conditions.en
dc.description.affiliationUNESP FCAV Depto. de Biologia Aplicada à Agropecuária
dc.description.affiliationUNESP FCAV Depto. de Ciências Exatas
dc.description.affiliationAPTA Polo Centro Oeste
dc.description.affiliationUNESP FCA Depto. de Produção Vegetal - Agricultura
dc.description.affiliationUnespUNESP FCAV Depto. de Biologia Aplicada à Agropecuária
dc.description.affiliationUnespUNESP FCAV Depto. de Ciências Exatas
dc.description.affiliationUnespUNESP FCA Depto. de Produção Vegetal - Agricultura
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent469-476
dc.identifierhttp://dx.doi.org/10.1590/S0103-90162011000400012
dc.identifier.citationScientia Agricola. São Paulo - Escola Superior de Agricultura Luiz de Queiroz, v. 68, n. 4, p. 469-476, 2011.
dc.identifier.doi10.1590/S0103-90162011000400012
dc.identifier.fileS0103-90162011000400012.pdf
dc.identifier.issn0103-9016
dc.identifier.lattes7159757610060958
dc.identifier.lattes8859564182139636
dc.identifier.lattes4203867944943427
dc.identifier.orcid0000-0002-2158-280X
dc.identifier.scieloS0103-90162011000400012
dc.identifier.urihttp://hdl.handle.net/11449/972
dc.identifier.wosWOS:000294369700012
dc.language.isoeng
dc.publisherUniversidade de São Paulo (USP), Escola Superior de Agricultura Luiz de Queiroz (ESALQ)
dc.relation.ispartofScientia Agricola
dc.relation.ispartofsjr0,578
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectSaccharum spp.en
dc.subjectDroughten
dc.subjecttrehaloseen
dc.subjectprolineen
dc.subjectInitial growthen
dc.titleBiochemical and physiological responses of sugarcane cultivars to soil water deficienciesen
dc.typeArtigo
unesp.author.lattes7159757610060958[3]
unesp.author.lattes8859564182139636[2]
unesp.author.lattes4203867944943427
unesp.author.orcid0000-0002-2158-280X[2]
unesp.author.orcid0000-0002-7089-923X[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatupt
unesp.departmentSolos e Recursos Ambientais - FCApt
unesp.departmentProdução Vegetalpt
unesp.departmentProdução e Melhoramento Vegetal - FCApt

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