Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1057635
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dc.contributor.authorSOUZA, T. C. dept_BR
dc.contributor.authorMAGALHAES, P. C.pt_BR
dc.contributor.authorCASTRO, E. M. dept_BR
dc.contributor.authorDUARTE, V. P.pt_BR
dc.contributor.authorLAVINSKY, A. O.pt_BR
dc.date.accessioned2017-06-09T00:11:31Z-
dc.date.available2017-06-09T00:11:31Z-
dc.date.created2016-12-01pt_BR
dc.date.issued2016pt_BR
dc.identifier.citationPesquisa Agropecuária Brasileira, Brasília, DF, v. 51, n. 4, p. 330-339, abr. 2016.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1057635pt_BR
dc.descriptionThe objective of this work was to characterize the morphoanatomy of roots and the yield traits of two corn hybrids contrasting for drought tolerance (DKB 390, tolerant; and BRS 1030, sensitive), at different stages of development. Water deficit was imposed for ten days, in a greenhouse, at three growth stages: V5, VT, and R3. These treatments were combined to generate cumulative stress during the plant cycle, as: V5VT, V5R3, VTR3, and V5VTR3. The following were analyzed: root anatomy; proportion of aerenchyma in the cortex; metaxylem number and diameter; phloem thickness; as well as morphological characteristics, such as root length, volume, and surface area, specific root length, length of fine roots, grain yield, and ear length and diameter. Development stage affected the responses to stress: DKB 390 showed the best performance for root morphoanatomy and yield traits, under drought stress, at the reproductive stages, mainly R3, and in the treatments with cumulative stress, especially V5VTR3; whereas BRS 1030 presented higher means for the studied parameters, mainly at the V5 and VT stages, but did not show a higher grain yield under water stress. The greater tolerance of the DKB 390 hybrid to water deficit is probably linked with a memory of pre?exposure to water stress at different growth stages.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectAerênquimapt_BR
dc.subjectEndodermept_BR
dc.subjectComprimento específico radicularpt_BR
dc.subjectSpecific root lengthpt_BR
dc.subjectWinRhizopt_BR
dc.titleCorn root morphoanatomy at different development stages and yield under water stress.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2017-09-26T11:11:11Zpt_BR
dc.subject.thesagroSecapt_BR
dc.subject.thesagroZea Mayspt_BR
dc.subject.nalthesaurusAerenchymapt_BR
dc.subject.nalthesaurusEndodermispt_BR
riaa.ainfo.id1057635pt_BR
riaa.ainfo.lastupdate2017-09-26 -03:00:00pt_BR
dc.identifier.doi10.1590/S0100-204X2016000400005pt_BR
dc.contributor.institutionTHIAGO CORRÊA DE SOUZA, Universidade Federal de Alfenas; PAULO CESAR MAGALHAES, CNPMS; EVARISTO MAURO DE CASTRO, UFLA; VINÍCIUS POLITI DUARTE, Universidade Federal de Alfenas; ALYNE OLIVEIRA LAVINSKY, Bolsista.pt_BR
Aparece nas coleções:Artigo em periódico indexado (CNPMS)

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