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| 3. |  | SOUZA, T. C. de; MAGALHAES, P. C.; CASTRO, E. M. de; DUARTE, V. P.; LAVINSKY, A. O. Corn root morphoanatomy at different development stages and yield under water stress. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 51, n. 4, p. 330-339, abr. 2016.| Biblioteca(s): Embrapa Milho e Sorgo; Embrapa Unidades Centrais. |
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| 4. | | DÍAZ, A. S.; CRUZ, Y. da C.; DUARTE, V. P.; CASTRO, E. M. de; MAGALHAES, P. C.; PEREIRA, F. J. The role of reactive oxygen species and nitric oxide in the formation of root cortical aerenchyma under cadmium contamination. Physiologia Plantarum, v. 173, n. 4, p. 2323-2333, 2021.| Biblioteca(s): Embrapa Milho e Sorgo. |
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| Registros recuperados : 5 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo; Embrapa Unidades Centrais. |
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Data corrente: |
06/07/2016 |
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Data da última atualização: |
26/09/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
SOUZA, T. C. de; MAGALHAES, P. C.; CASTRO, E. M. de; DUARTE, V. P.; LAVINSKY, A. O. |
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Afiliação: |
THIAGO 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. |
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Título: |
Corn root morphoanatomy at different development stages and yield under water stress. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 51, n. 4, p. 330-339, abr. 2016. |
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DOI: |
10.1590/S0100-204X2016000400005 |
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Idioma: |
Inglês |
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Conteúdo: |
The 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. |
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Palavras-Chave: |
Aerênquima; Comprimento específico radicular; Endoderme; Specific root length; WinRhizo. |
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Thesagro: |
Seca; Zea Mays. |
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Thesaurus NAL: |
Aerenchyma; Endodermis. |
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Categoria do assunto: |
--
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/160651/1/Corn-root.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/145100/1/Corn-root-morphoanatomy.pdf
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Marc: |
LEADER 02163naa a2200289 a 4500
001 2057635
005 2017-09-26
008 2016 bl uuuu u00u1 u #d
024 7 $a10.1590/S0100-204X2016000400005$2DOI
100 1 $aSOUZA, T. C. de
245 $aCorn root morphoanatomy at different development stages and yield under water stress.
260 $c2016
520 $aThe 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.
650 $aAerenchyma
650 $aEndodermis
650 $aSeca
650 $aZea Mays
653 $aAerênquima
653 $aComprimento específico radicular
653 $aEndoderme
653 $aSpecific root length
653 $aWinRhizo
700 1 $aMAGALHAES, P. C.
700 1 $aCASTRO, E. M. de
700 1 $aDUARTE, V. P.
700 1 $aLAVINSKY, A. O.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 51, n. 4, p. 330-339, abr. 2016.
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Embrapa Milho e Sorgo (CNPMS) |
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