florescimento de tangerineiras satsuma 'owari' tratadas com paclobutrazol, anelamento do caule e baixa temperatura flowering of satsuma 'owari' mandarins treated with paclobutrazol, stem girdling and low temperature

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ID: 179104
2004
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Abstract
O retardador de crescimento paclobutrazol (PBZ) e o anelamento dos ramos foram aplicados em mudas de tangerineira satsuma 'Owari' sobre porta-enxerto de citrange 'Carrizo', cultivadas em vaso e mantidas em dois ambientes (câmaras de crescimento com temperatura diurna de 15(0)C e noturna de 8(0)C e com temperatura diurna de 26(0)C e noturna de 20(0)C). Houve aumento significativo no florescimento da tangerineira 'Satsuma', devido ao regime de baixas temperaturas (15/8ºC); entretanto, o PBZ não foi efetivo na indução do florescimento da tangerineira 'Satsuma' em ambas as condições de temperatura (15/8ºC e 26/20ºC). O florescimento aumentou quando as plantas foram aneladas, principalmente nas condições de temperaturas baixas (15/8ºC). A aplicação de paclobutrazol e o anelamento induziram variações nas concentrações de carboidratos nas folhas e raízes das plantas; entretanto, não foi possível estabelecer relação de causa-efeito entre florescimento e os níveis de carboidratos na planta.
The growth retardant paclobutrazol (PBZ) and stem girdling were applied to satsuma 'Owari' mandarin plants cultivated in pots in a growth chamber under two different environmental conditions: one with temperature at day time set in 15(0)C and night time in 8(0)C, and another with temperature at day time set in 26(0)C and night time in 20 0C. The low temperature (15/8ºC) significantly increased flowering, but PBZ was not effective. The flowering increased when the plants were girdled, mainly in the conditions of low temperatures (15/8ºC). Paclobutrazol and the girdling induced variations in carbohydrates concentrations of leaf and root, however it was not possible to establish a relationship between flowering and carbohydrates level in the plant.
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siqueira2004revistaflorescimento Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Dalmo Lopes de Siqueira;José Luis Guardiola Barcena;Marlon Dutra Degli Esposti
Journal technocom
Year 2004
DOI
10.1590/S0100-29452004000300009
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452004000300009
Keywords
carbohydrates indução floral

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