Seed-borne pathogens and electrical conductivity of soybean seeds

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dc.contributor.authorWain-Tassi, Adriana Luiza [UNESP]
dc.contributor.authorSantos, Juliana Faria dos [UNESP]
dc.contributor.authorPanizzi, Rita de Cássia [UNESP]
dc.contributor.authorVieira, Roberval Daiton [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:16:26Z
dc.date.available2014-05-20T13:16:26Z
dc.date.issued2012-02-01
dc.description.abstractAdequate procedures to evaluate seed vigor are important. Regarding the electrical conductivity test (EC), the interference in the test results caused by seed-borne pathogens has not been clarified. This research was carried out to study the influence of Phomopsis sojae (Leh.) and Colletotrichum dematium (Pers. ex Fr.) Grove var. truncata (Schw.) Arx. fungi on EC results. Soybean seeds (Glycine max L.) were inoculated with those fungi using potato, agar and dextrose (PDA) medium with manitol (-1.0 MPa) and incubated for 20 h at 25 °C. The colony diameter, index of mycelial growth, seed water content, occurrence of seed-borne pathogens, physiological potential of the seeds, measured by germination and vigor tests (seed germination index, cold test, accelerated aging and electrical conductivity), and seedling field emergence were determined. The contents of K+, Ca2+, and Mg2+ in the seed and in the soaking solution were also determined. A complete 2 × 4 factorial design with two seed sizes (5.5 and 6.5 mm) and four treatments (control, seeds incubated without fungi, seeds incubated with Phomopsis and seeds incubated with Colletotrichum) were used with eight (5.5 mm large seeds) and six (6.5 mm large seeds) replications. All seeds submitted to PDA medium had their germination reduced in comparison to the control seeds. This reduction was also observed when seed vigor and leached ions were considered. The presence of Phomopsis sojae fungus in soybean seed samples submitted to the EC test may be the cause of misleading results.en
dc.description.affiliationUNESP FCAV Depto. de Produção Vegetal
dc.description.affiliationUNESP FCAV Depto. de Fitossanidade
dc.description.affiliationUnespUNESP FCAV Depto. de Produção Vegetal
dc.description.affiliationUnespUNESP FCAV Depto. de Fitossanidade
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent19-25
dc.identifierhttp://dx.doi.org/10.1590/S0103-90162012000100004
dc.identifier.citationScientia Agricola. São Paulo - Escola Superior de Agricultura Luiz de Queiroz, v. 69, n. 1, p. 19-25, 2012.
dc.identifier.doi10.1590/S0103-90162012000100004
dc.identifier.fileS0103-90162012000100004.pdf
dc.identifier.issn0103-9016
dc.identifier.lattes8913035708076881
dc.identifier.lattes3485128296532390
dc.identifier.scieloS0103-90162012000100004
dc.identifier.urihttp://hdl.handle.net/11449/3294
dc.identifier.wosWOS:000300686100004
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.subjectGlycine maxen
dc.subjectPhomopsis sojaeen
dc.subjectColletotrichum dematium var. truncataen
dc.subjectVigoren
dc.titleSeed-borne pathogens and electrical conductivity of soybean seedsen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/sa/paboutj.htm
unesp.author.lattes8913035708076881
unesp.author.lattes3485128296532390[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt

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Artigos - Produção Vegetal - FCAV
Artigos - Fitossanidade - FCAV