Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/985154
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dc.contributor.authorMENEZES, V. O.pt_BR
dc.contributor.authorLOPES, S. J.pt_BR
dc.contributor.authorTEDESCO, S. B.pt_BR
dc.contributor.authorHENNING, F. A.pt_BR
dc.contributor.authorZEN, H. D.pt_BR
dc.contributor.authorHENNING, L. M. M.pt_BR
dc.date.accessioned2014-04-25T11:11:11Zpt_BR
dc.date.available2014-04-25T11:11:11Zpt_BR
dc.date.created2014-04-25pt_BR
dc.date.issued2014pt_BR
dc.identifier.citationJournal of Seed Science, Viçosa, MG, v. 36, n. 1, p. 71-78, Mar. 2014.pt_BR
dc.identifier.issn2317-1537pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/985154pt_BR
dc.descriptionSeveral studies have been developed to understand the physiology of seed deterioration, however, the initial steps of the deterioration process are not completely clear. Seed vigor and viability losses are also associated with genetic material damage. This study was carried out to detect cytogenetic and physiological alterations occurring during the deterioration process of wheat seeds, due to artificial aging stress. Two cultivars, Ônix and Fundacep Campo Real, were submitted to six different treatments: control (T1), 24 (T2), 48 (T3), 72 (T4), 96 (T5) and 120 (T6) hours under artificial aging conditions: 42 °C and 100% relative humidity. Germination and vigor tests (First Count of Germination, Electrical Conductivity, Seedling Emergence in the Field and Emergence Speed Index) were performed. Cytogenetic evaluations were performed through smear technique for root tips, stained with 2% acetic orcein. Total number of cells under division and mitotic index (MI) were determined. According to results, vigor and mitotic index were affected due to deterioration process induced by artificial aging stress. A reduced number of dividing cells were observed in seeds submitted to prolonged period of aging. Chromosomal abnormalities in mitotic cells of aged seeds were detected with the occurrence of micronuclei, chromosome breaks and bridges.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.titleCytogenetic analysis of wheat seeds submitted to artificial aging stress.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2014-05-07T11:11:11Zpt_BR
dc.subject.thesagroTrigopt_BR
dc.subject.thesagroSementept_BR
dc.subject.thesagroDeterioraçãopt_BR
dc.subject.nalthesaurusWheatpt_BR
dc.subject.nalthesaurusSeedspt_BR
dc.subject.nalthesaurusDeteriorationpt_BR
riaa.ainfo.id985154pt_BR
riaa.ainfo.lastupdate2014-05-07pt_BR
dc.identifier.doi10.1590/S2317-15372014000100009pt_BR
dc.contributor.institutionVANESSA OCOM MENEZES, UFSM; SIDINEI JOSE LOPES, UFSM; SOLANGE BOSIO TEDESCO, UFSM; FERNANDO AUGUSTO HENNING, CNPSO; HUMBERTO DAVI ZEN, UFSM; LILIANE MARCIA MERTZ HENNING, CNPSO.pt_BR
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