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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
09/10/1991 |
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Data da última atualização: |
18/03/2025 |
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Autoria: |
HU, C. Y. |
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Título: |
Light-mediated inhibition of in vitro development of rudimentary embryos of Ilex opaca. |
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Ano de publicação: |
1976 |
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Fonte/Imprenta: |
American Journal of Botany, Bronx, v. 63, n. 5, p. 651-656, 1976. |
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Idioma: |
Inglês |
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Conteúdo: |
The mature seeds of Ilex opaca Ait. contain rudimentary heart-shaped embryos. When excised embryos of cv. Farage were grown in vitro with a 16-hr photoperiod, only 20 % reached germination size after 13-day incubation, while 75% of the embryos reached the same stage when incubated in darkness. This light inhibitory effect increased with the length of daily light exposure as the daily photoperiod reached 4 hr. Nearly 50% growth reduction resulted as the cultures were preincubated in light continuously for 2 days before a 10-day dark incubation. After 4 days of light incubation the inhibitory effect could no longer be reversed by the subsequent dark incubation. Once the heart-shaped embryos started to grow in darkness they become progressively insensitive to subsequent light inhibition. After a 6-day initial dark incubation the embryos become immune from the inhibitory effect of light. This light inhibitory effect on in vitro embryo growth was universal in all 11 tested cultivars. |
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Palavras-Chave: |
Development. |
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Thesagro: |
Cultura In Vitro; Semente. |
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Thesaurus Nal: |
Ilex opaca. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 01500naa a2200169 a 4500
001 1279803
005 2025-03-18
008 1976 bl uuuu u00u1 u #d
100 1 $aHU, C. Y.
245 $aLight-mediated inhibition of in vitro development of rudimentary embryos of Ilex opaca.$h[electronic resource]
260 $c1976
520 $aThe mature seeds of Ilex opaca Ait. contain rudimentary heart-shaped embryos. When excised embryos of cv. Farage were grown in vitro with a 16-hr photoperiod, only 20 % reached germination size after 13-day incubation, while 75% of the embryos reached the same stage when incubated in darkness. This light inhibitory effect increased with the length of daily light exposure as the daily photoperiod reached 4 hr. Nearly 50% growth reduction resulted as the cultures were preincubated in light continuously for 2 days before a 10-day dark incubation. After 4 days of light incubation the inhibitory effect could no longer be reversed by the subsequent dark incubation. Once the heart-shaped embryos started to grow in darkness they become progressively insensitive to subsequent light inhibition. After a 6-day initial dark incubation the embryos become immune from the inhibitory effect of light. This light inhibitory effect on in vitro embryo growth was universal in all 11 tested cultivars.
650 $aIlex opaca
650 $aCultura In Vitro
650 $aSemente
653 $aDevelopment
773 $tAmerican Journal of Botany, Bronx$gv. 63, n. 5, p. 651-656, 1976.
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| Registros recuperados : 3 | |
| 1. |  | BRAMORSKI, J.; DE MARIA, I. C.; SILVA, R. L. e; CRESTANA, S. Relations between soil surface roughness, tortuosity, tillage treatments, rainfall intensity and soil and water losses from a red yellow latosol. Revista Brasileira de Ciência do Solo, Viçosa, v. 36, n. 4, p. 1291-1297, 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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| 2. | | BRAMORSKI, J. DE MARIA, I. C. SILVA, R. L. E.; CRESTANA, S. Utilização de rugosímetro a laser e simulador de chuvas para investigar dois preparos diferentes de solo sob processos erosivos. In: SIMPÓSIO NACIONAL DE INSTRUMENTAÇÃO AGROPECUÁRIA, 2014, São Carlos, SP Anais do SIAGRO: ciência, inovação e mercado 2014. São Carlos, SP: Embrapa Instrumentação, 2014. p. 201-204. Editores: Carlos Manoel Pedro Vaz, Débora Marcondes Bastos Pereira Milori, Silvio Crestana.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Instrumentação. |
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| 3. | | BISWAS, A.; ALVES, C. R.; TREVISAN, M. T. S.; SILVA, R. L. E. da; FURTADO, R. F.; LIU, Z.; CHENG, H. N. Synthesis of a cardanol-amine derivative using an ionic liquid catalyst. Frontiers of Chemical Science and Engineering, v. 10, n. 3, p. 425-431, 2016.| Tipo: Artigo em Periódico Indexado |
| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| Registros recuperados : 3 | |
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