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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: |
29/01/2019 |
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Autoria: |
KENNELL, J. C.; HORNER, H. T. |
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Título: |
Megasporogenesis and megagametogenesis in soybean, Glycine max. |
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Ano de publicação: |
1985 |
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Fonte/Imprenta: |
American Journal of Botany, v. 72, n. 10, p. 1553-1564, 1985. |
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DOI: |
DOI: 10.2307/2443306 |
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Idioma: |
Inglês |
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Conteúdo: |
Megasporogenesis and megagametogenesis were examined in Glycine max with light, fluorescence, and electron microscopy. Megasporogenesis results in a linear tetrad offour megaspores. Megagametophyte development is of the Polygonum type, with the functional chalazal megaspore undergoing three successive mitotic divisions to produce an eight-nucleate, seven-celled mature megagametophyte. The central cell becomes packed with starch. At fertilization, the antipodals are degenerate, the polar nuclei have fused, starch is diminished, and the egg occupies most of the micropylarportion of the megagametophyte. Several pollen tubes were occasionally observed at each micropyle, yet only one was involved in fertilization. Pollen tube entry occurs through a slightly reduced, viable synergid cell. Endosperm development precedes embryo growth. These results describing normal development allow important comparison with genetic mutants of soybean that affect female fertility. |
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Thesagro: |
Genética; Soja. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01440naa a2200169 a 4500
001 1836879
005 2019-01-29
008 1985 bl --- 0-- u #d
024 7 $aDOI: 10.2307/2443306$2DOI
100 1 $aKENNELL, J. C.
245 $aMegasporogenesis and megagametogenesis in soybean, Glycine max.
260 $c1985
520 $aMegasporogenesis and megagametogenesis were examined in Glycine max with light, fluorescence, and electron microscopy. Megasporogenesis results in a linear tetrad offour megaspores. Megagametophyte development is of the Polygonum type, with the functional chalazal megaspore undergoing three successive mitotic divisions to produce an eight-nucleate, seven-celled mature megagametophyte. The central cell becomes packed with starch. At fertilization, the antipodals are degenerate, the polar nuclei have fused, starch is diminished, and the egg occupies most of the micropylarportion of the megagametophyte. Several pollen tubes were occasionally observed at each micropyle, yet only one was involved in fertilization. Pollen tube entry occurs through a slightly reduced, viable synergid cell. Endosperm development precedes embryo growth. These results describing normal development allow important comparison with genetic mutants of soybean that affect female fertility.
650 $aGenética
650 $aSoja
700 1 $aHORNER, H. T.
773 $tAmerican Journal of Botany$gv. 72, n. 10, p. 1553-1564, 1985.
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| 1. |  | GUEVARA, M.; OLMEDO, G. F.; STELL, E.; YIGINI, Y.; AGUILAR DUARTE, Y.; ARELLANO HERNÁNDEZ, C.; ARÉVALO, G. E.; ARROYO-CRUZ, C. E.; BOLIVAR, A.; BUNNING, S.; BUSTAMANTE CAÑAS, N.; CRUZ-GAISTARDO, C. O.; DAVILLA, F.; DELL ACQUA, M.; ENCINA, A.; FIGUEREDO TACONA, H.; FONTES, F.; HERNÁNDEZ HERRERA, J. A.; IBELLES NAVARRO, A. R.; LOAYZA, V.; MANUELES, A. M.; MENDOZA JARA, F.; OLIVERA, C.; OSORIO HERMOSILLA, R.; PEREIRA, G.; PIETRO, P.; RAMOS, I. A.; REY BRINA, J. C.; RIVERA, R.; RODRÍGUEZ-RODRÍGUEZ, J.; ROOPNARINE, R.; ROSALES IBARRA, A.; ROSALES RIVEIRO, K. A.; SCHULZ, G. A.; SPENCE, A.; VASQUES, G. de M.; VARGAS, R. R.; VARGAS, R. No silver bullet for digital soil mapping: country-specific soil organic carbon estimates across Latin America. Soil, v. 4, n. 1, p. 173-193, 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: C - 0 |
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