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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
25/08/1995 |
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Data da última atualização: |
25/08/1995 |
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Autoria: |
GUARDIOLA, J. L.; AGUSTI, M.; GARCIA-MARI, F. |
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Afiliação: |
Catedra de Fisiologia Vegetal, Escuele Tecnica Superior de Ingenieros Agronomos Valencia, Spain. |
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Título: |
Gibberellic acid and flower bud development in sweet orange. |
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Ano de publicação: |
1977 |
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Fonte/Imprenta: |
Reprinted from Proc. Int. Soc. Citriculture, v.2, p.696-699, 1977 |
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Idioma: |
Inglês |
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Conteúdo: |
Gibberellic acid sprays reduced flowering of `Washington' navel and `Navelate' oranges, the degree of reduction depending on time of application and the concentration. Although the greatest affect of GA was obtained when applications were made during the time of flower induction, its main action does not appear to be related to an inhibition of this process as reported earlier since: I.- The number of flowers per inflorescence was not affected, and: II.- The increase in the proportion of leafy inflorescences and vegetative sprouts was mainly due to a marked reduction in the number of leafless inflorescences, most of the corresponding buds failing to develop and not severting to a vegetative apex nor to a more leafy inflorescence. It is our conclusion, therefore, that the main effect of GA lies in the inhibition of bud development before visible growth starts in spring, the buds of the leafless inflorescences being more sensitive to this compound. No effect was observed in the abscision of sprouts, which was e even lower in the GA-treated trees in which the decrease in their number reduces competition during early growth, as shown by a more vigorous growth of both flowers and vegetative shoots. |
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Thesagro: |
Citrus Sinensis. |
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Thesaurus Nal: |
fruit drop; fruit set. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01708naa a2200181 a 4500
001 1646854
005 1995-08-25
008 1977 bl --- 0-- u #d
100 1 $aGUARDIOLA, J. L.
245 $aGibberellic acid and flower bud development in sweet orange.
260 $c1977
520 $aGibberellic acid sprays reduced flowering of `Washington' navel and `Navelate' oranges, the degree of reduction depending on time of application and the concentration. Although the greatest affect of GA was obtained when applications were made during the time of flower induction, its main action does not appear to be related to an inhibition of this process as reported earlier since: I.- The number of flowers per inflorescence was not affected, and: II.- The increase in the proportion of leafy inflorescences and vegetative sprouts was mainly due to a marked reduction in the number of leafless inflorescences, most of the corresponding buds failing to develop and not severting to a vegetative apex nor to a more leafy inflorescence. It is our conclusion, therefore, that the main effect of GA lies in the inhibition of bud development before visible growth starts in spring, the buds of the leafless inflorescences being more sensitive to this compound. No effect was observed in the abscision of sprouts, which was e even lower in the GA-treated trees in which the decrease in their number reduces competition during early growth, as shown by a more vigorous growth of both flowers and vegetative shoots.
650 $afruit drop
650 $afruit set
650 $aCitrus Sinensis
700 1 $aAGUSTI, M.
700 1 $aGARCIA-MARI, F.
773 $tReprinted from Proc. Int. Soc. Citriculture$gv.2, p.696-699, 1977
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Embrapa Mandioca e Fruticultura (CNPMF) |
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