| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
|
Data corrente: |
24/02/1992 |
|
Data da última atualização: |
24/02/1992 |
|
Autoria: |
KOBAYASHI, S.; IEDA, I.; NAKATANI, M. |
|
Título: |
Role of The Primordium Cell in Nucellar Embryogenesis in Citrus. |
|
Ano de publicação: |
1981 |
|
Fonte/Imprenta: |
Proceedings of the International Society of Citriculture, v.1, p.44-48, 1981. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Nucellar embryogenesis was studied histologically and in ovule culture on 74 citrus cultivars. Nucellar cells containing dense cytoplasm and one large nucleolus were found in the ovules at or before anthesis in the polyembryonic cultivars. These cells, however, were never observed in the monoembryonic cultivars. These cells developed into the nucellar embryos. We propose a name of "Primordium Cell of the Nucellar Embryo" for the cells. In the culture of ovules excised from flowr buds and young fruits, nucellar embryoids occurred only in the polyembryonic cultivars. Histological studies showed that the nucellar embryoids were derived from the primordium cells. Embryoids that occurred in monoembri onic cultivars originated from fertilized eggs. These resultsindicate that the "Primordium Cell of the Nucellar Embryo" played an important role in nucellar embryogenesis not only in vivo but also in vitro, and that the nucellar embryogenesis started at the flower bud stage. |
|
Palavras-Chave: |
embryoids. |
|
Thesaurus Nal: |
histology; ovule culture. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01481naa a2200181 a 4500
001 1646462
005 1992-02-24
008 1981 bl --- 0-- u #d
100 1 $aKOBAYASHI, S.
245 $aRole of The Primordium Cell in Nucellar Embryogenesis in Citrus.
260 $c1981
520 $aNucellar embryogenesis was studied histologically and in ovule culture on 74 citrus cultivars. Nucellar cells containing dense cytoplasm and one large nucleolus were found in the ovules at or before anthesis in the polyembryonic cultivars. These cells, however, were never observed in the monoembryonic cultivars. These cells developed into the nucellar embryos. We propose a name of "Primordium Cell of the Nucellar Embryo" for the cells. In the culture of ovules excised from flowr buds and young fruits, nucellar embryoids occurred only in the polyembryonic cultivars. Histological studies showed that the nucellar embryoids were derived from the primordium cells. Embryoids that occurred in monoembri onic cultivars originated from fertilized eggs. These resultsindicate that the "Primordium Cell of the Nucellar Embryo" played an important role in nucellar embryogenesis not only in vivo but also in vitro, and that the nucellar embryogenesis started at the flower bud stage.
650 $ahistology
650 $aovule culture
653 $aembryoids
700 1 $aIEDA, I.
700 1 $aNAKATANI, M.
773 $tProceedings of the International Society of Citriculture$gv.1, p.44-48, 1981.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 3 | |
| 2. |  | LEMOS, O. F. de; LAMEIRA, O. A.; MENEZES, I. C. de; MOTA, M. G. da C.; OKA, S.; SAITO, T.; SATO, M.; HIDAKA, T.; KOBAYASHI, S. Melhoramento de plantas de interesse economico para a regiao amazonica atraves de tecnicas "in vitro". In: EMBRAPA. Centro de Pesquisa Agroflorestal da Amazônia Oriental. Geração de tecnologia agroindustrial para o desenvolvimento do trópico úmido: síntese dos resultados do projeto. Belém, PA: EMBRAPA-CPATU: JICA, 1997. p. 11-13. (EMBRAPA-CPATU. Documentos, 90). Convênio Embrapa Amazônia Oriental/JICA-1990-1997.| Biblioteca(s): Embrapa Amazônia Oriental. |
|    |
| 3. | | LEMOS, O. F. de; LAMEIRA, O. A.; MENEZES, I. C. de; MOTA, M. G. da C.; OKA, S.; SAITO, T.; SATO, M.; HIDAKA, T.; KOBAYASHI, S. Melhoramento de plantas de interesse econômico para a região Amazônica através de técnicas "in vitro". In: EMBRAPA. Centro de Pesquisa Agroflorestal da Amazônia Oriental. Geração de tecnologia agroindustrial para o desenvolvimento do trópico úmido: relatório técnico do projeto. Belém, PA: Embrapa Amazônia Oriental: JICA, 1998. p. 51-115. il. (Embrapa. Amazônia Oriental. Documentos, 102).| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| Registros recuperados : 3 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
