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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
15/08/2018 |
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Data da última atualização: |
25/02/2019 |
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Autoria: |
MORAIS, P. P. P.; SOUSA, M. B. e; GALLI, G.; ANDRADE, L. R. B. e; FRITSCHE-NETO, R.; OLIVEIRA, A. B. de. |
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Afiliação: |
Pedro Patric Pinho Morais, Universidade Federal de Viçosa - UFV/Departamento de Biologia Geral; Massaine Bandeira e Sousa, Universidade de São Paulo - USP/Escola Superior de Agricultura Luiz de Queiroz - Esalq/Departamento de Genética; Giovanni Galli, Universidade de São Paulo - USP/Escola Superior de Agricultura Luiz de Queiroz - Esalq/Departamento de Genética; Luciano Rogério Braatz e Andrade, Universidade Federal de Viçosa - UFV/Departamento de Biologia Geral; Roberto Fritsche-Neto, Universidade de São Paulo - USP/Escola Superior de Agricultura Luiz de Queiroz - Esalq/Departamento de Genética; Aluízio Borém de Oliveira, Universidade Federal de Viçosa - UFV/Departamento de Biologia Geral. |
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Título: |
Yield components and reproductive, physiological, and root traits used in early selection for nitrogen use efficiency in corn. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 5, p. 620-632, maio, 2018. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Componentes de produção e caracteres reprodutivos, fisiológicos e de raiz usados na seleção precoce para eficiência do uso de nitrogênio em milho. |
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Conteúdo: |
The objective of this work was to examine the possibility of using yield components and reproductive, physiological, and root traits in early selection for nitrogen use efficiency (NUE) in corn. Sixty-four inbred lines were evaluated under two nitrogen fertilization levels: ideal and low. The evaluations were performed at three phenological stages: eight fully-expanded leaves, tasseling stage, and physiological maturity. It is possible to select superior lines for NUE, but the yield components did not show differential behavior under the different nitrogen levels evaluated. Root, reproductive, and physiological traits are not promising for early selection of corn lines with high NUE. Likewise, the eight-leaves and tasseling stages were not promising for this purpose, since NUE should be estimated taking grain yield into account. However, indirect selection for NUE can be performed via number of ears or using the selection index considering number and weight of ears. |
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Palavras-Chave: |
Análise de trilha; Estresse abiótico; GBlup; Indirect selection; Path analysis; Seleção indireta. |
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Thesagro: |
Índice de Seleção; Zea Mays. |
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Thesaurus Nal: |
Abiotic stress; Selection index. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/181488/1/Yield-components-and-reproductive-physiological.pdf
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Marc: |
LEADER 02114naa a2200313 a 4500
001 2094158
005 2019-02-25
008 2018 bl uuuu u00u1 u #d
100 1 $aMORAIS, P. P. P.
245 $aYield components and reproductive, physiological, and root traits used in early selection for nitrogen use efficiency in corn.$h[electronic resource]
260 $c2018
500 $aTítulo em português: Componentes de produção e caracteres reprodutivos, fisiológicos e de raiz usados na seleção precoce para eficiência do uso de nitrogênio em milho.
520 $aThe objective of this work was to examine the possibility of using yield components and reproductive, physiological, and root traits in early selection for nitrogen use efficiency (NUE) in corn. Sixty-four inbred lines were evaluated under two nitrogen fertilization levels: ideal and low. The evaluations were performed at three phenological stages: eight fully-expanded leaves, tasseling stage, and physiological maturity. It is possible to select superior lines for NUE, but the yield components did not show differential behavior under the different nitrogen levels evaluated. Root, reproductive, and physiological traits are not promising for early selection of corn lines with high NUE. Likewise, the eight-leaves and tasseling stages were not promising for this purpose, since NUE should be estimated taking grain yield into account. However, indirect selection for NUE can be performed via number of ears or using the selection index considering number and weight of ears.
650 $aAbiotic stress
650 $aSelection index
650 $aÍndice de Seleção
650 $aZea Mays
653 $aAnálise de trilha
653 $aEstresse abiótico
653 $aGBlup
653 $aIndirect selection
653 $aPath analysis
653 $aSeleção indireta
700 1 $aSOUSA, M. B. e
700 1 $aGALLI, G.
700 1 $aANDRADE, L. R. B. e
700 1 $aFRITSCHE-NETO, R.
700 1 $aOLIVEIRA, A. B. de
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 53, n. 5, p. 620-632, maio, 2018.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
27/08/1997 |
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Data da última atualização: |
30/04/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - B |
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Autoria: |
MELO, N. F. de; GUERRA, M.; BENKO-ISEPPON, A. M.; MENEZES, N. L. de. |
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Afiliação: |
NATONIEL FRANKLIN DE MELO, CPATSA; MARCELO GUERRA; ANA MARIA BENKO-ISEPPON; NANUZA LUIZA DE MENEZES. |
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Título: |
Cytogenetics and cytotaxonomy of Velloziaceae. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
Plant Systematics and Evolution, v. 204, p. 257-273, 1997. |
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Idioma: |
Inglês |
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Conteúdo: |
Chromosome number and other cytological features are reported from 35 species of Velloziaceae, including several african and brazilian populations. All analyzed species show areticulate interphase nuclei and prophase/prometaphase chromosomes with proximal early condensation. Most heteropycnotic blocks do not seem to correspond to heterochromatin since, at least in Vellozia patens, they do not stain differentially after C-banding procedures. Regarding the chromosome number, three main groups could be identified. The first comprised diploid species of the genera Nanuza, Vellozia and the brazilian species of Xerophyta with 2n=14 or 16; the second comprised tetraploid species with 2n=34, and included all brazilian species of subfam. Barbacenioideae; the third group, of hexaploid species, comprised the African representatives of the genus Xerophyta. A single population of Vellozia, possibly of hybrid origin, had 2n~=32. A basic number of x=8 is proposed for the family. The karyological information supports the hypothesis that the Velloziaceae originated on the South American, rather than on the African continent. |
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Palavras-Chave: |
Cytotaxonomy; Heterochromation. |
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Thesagro: |
Citotaxonomia; Cromossoma. |
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Thesaurus NAL: |
chromosomes; Velloziaceae. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/176158/1/Separata-8366.pdf
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Marc: |
LEADER 01728naa a2200229 a 4500
001 1132531
005 2018-04-30
008 1997 bl uuuu u00u1 u #d
100 1 $aMELO, N. F. de
245 $aCytogenetics and cytotaxonomy of Velloziaceae.
260 $c1997
520 $aChromosome number and other cytological features are reported from 35 species of Velloziaceae, including several african and brazilian populations. All analyzed species show areticulate interphase nuclei and prophase/prometaphase chromosomes with proximal early condensation. Most heteropycnotic blocks do not seem to correspond to heterochromatin since, at least in Vellozia patens, they do not stain differentially after C-banding procedures. Regarding the chromosome number, three main groups could be identified. The first comprised diploid species of the genera Nanuza, Vellozia and the brazilian species of Xerophyta with 2n=14 or 16; the second comprised tetraploid species with 2n=34, and included all brazilian species of subfam. Barbacenioideae; the third group, of hexaploid species, comprised the African representatives of the genus Xerophyta. A single population of Vellozia, possibly of hybrid origin, had 2n~=32. A basic number of x=8 is proposed for the family. The karyological information supports the hypothesis that the Velloziaceae originated on the South American, rather than on the African continent.
650 $achromosomes
650 $aVelloziaceae
650 $aCitotaxonomia
650 $aCromossoma
653 $aCytotaxonomy
653 $aHeterochromation
700 1 $aGUERRA, M.
700 1 $aBENKO-ISEPPON, A. M.
700 1 $aMENEZES, N. L. de
773 $tPlant Systematics and Evolution$gv. 204, p. 257-273, 1997.
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Embrapa Semiárido (CPATSA) |
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