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Registro Completo |
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
10/01/2010 |
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Data da última atualização: |
28/01/2019 |
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Autoria: |
KIESSELBACH, T. A.; WALKER, E. R. |
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Título: |
Structure of certain specialized tissues in the kernel of corn. |
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Ano de publicação: |
1952 |
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Fonte/Imprenta: |
American Journal of Botany, v. 39, n. 8, p. 561-569, 1952. |
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DOI: |
DOI: 10.2307/2438703 |
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Idioma: |
Inglês |
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Conteúdo: |
The development and structure of the pericarp, semipermeable membrane, and closing tissue of the corn kernel were found to differ but slightly from previous descriptions. Microchemical tests were applied to determine as far as possible the specialized modification of these tissues. Two nutritive mechanisms develop in the growing corn seed. One is a modification of the basal endosperm. The outermost cells become specialized as an absorbing layer. Their dense protoplasm contains heavy longitudinal strands and the walls are marked by longitudinal thickenings. Inward from this layer is a region of elongated, highly protoplasmic, conducting cells whose walls are marked by spiral and reticulate thickenings. The other nutritive structure is the scutellum, specialized for digestion and absorption. By enlargement it crushes the basal endosperm as maturity is approached. Its outermost cells become an absorbing layer. They are chacterized by a slight thickening of the anticlinal walls and by abundant protoplasm. The parenchyma cells of the scutellum develop heavily thickened walls which are marked by large simple pits. The relation of the various absorbing, conducting and protective tissues to the nutritional and moisture economy of the corn seed is discussed. |
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Palavras-Chave: |
Grãos. |
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Thesagro: |
Anatomia; Histologia; Milho; Secagem. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01812naa a2200205 a 4500
001 1834717
005 2019-01-28
008 1952 bl --- 0-- u #d
024 7 $aDOI: 10.2307/2438703$2DOI
100 1 $aKIESSELBACH, T. A.
245 $aStructure of certain specialized tissues in the kernel of corn.
260 $c1952
520 $aThe development and structure of the pericarp, semipermeable membrane, and closing tissue of the corn kernel were found to differ but slightly from previous descriptions. Microchemical tests were applied to determine as far as possible the specialized modification of these tissues. Two nutritive mechanisms develop in the growing corn seed. One is a modification of the basal endosperm. The outermost cells become specialized as an absorbing layer. Their dense protoplasm contains heavy longitudinal strands and the walls are marked by longitudinal thickenings. Inward from this layer is a region of elongated, highly protoplasmic, conducting cells whose walls are marked by spiral and reticulate thickenings. The other nutritive structure is the scutellum, specialized for digestion and absorption. By enlargement it crushes the basal endosperm as maturity is approached. Its outermost cells become an absorbing layer. They are chacterized by a slight thickening of the anticlinal walls and by abundant protoplasm. The parenchyma cells of the scutellum develop heavily thickened walls which are marked by large simple pits. The relation of the various absorbing, conducting and protective tissues to the nutritional and moisture economy of the corn seed is discussed.
650 $aAnatomia
650 $aHistologia
650 $aMilho
650 $aSecagem
653 $aGrãos
700 1 $aWALKER, E. R.
773 $tAmerican Journal of Botany$gv. 39, n. 8, p. 561-569, 1952.
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| 1. |  | CUNHA, C. M.; GRISOLIA, A. B.; SENO, L. O.; JUNIOR, F. M. V.; SIQUEIRA, F. Relação entre polimorfismos no gene da leptina, ganho de peso e concentração sérica de leptina em bovinos de corte. In: JORNADA CIENTÍFICA DA EMBRAPA GADO DE CORTE,5., 2009, Campo Grande, MS. [Anais da ...]. Campo Grande, MS: Embrapa Gado de Corte, 2009. 1 p.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 2. | | OLIVEIRA, J. A.; CRISPIM, B. A.; BONARI, A. C.; EGITO, A. A. do; JUNIOR, F. M. V.; SENO, L. O.; GRISOLIA, A. B. Segregation of MT-COI RFLP in sheep from Mato Grosso do Sul, Brasil. Archivos de Zootecnia, v. 65, n. 250, 2016| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 3. | | FERREIRA, V. M. O. S.; CALDARA, F. R.; FEIJO, G. L. D.; SANTIAGO, J. C.; GARCIA, R. G.; JUNIOR, F. M. V.; PAZ, I. C. L. A.; REZENDE, M. A.; SUNADA, N. S.; SANTOS, L. S. Avaliação sensorial em carnes pse (mole, pálida e exsudativa) de suínos. In: JORNADA CIENTÍFICA DA EMBRAPA GADO DE CORTE,5., 2009, Campo Grande, MS. [Anais da ...]. Campo Grande, MS: Embrapa Gado de Corte, 2009. 1 p.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| Registros recuperados : 3 | |
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