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Master's Dissertation
DOI
10.11606/D.11.2003.tde-09122003-105333
Document
Author
Full name
Milene Ronconi Vieira
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
Piracicaba, 2003
Supervisor
Committee
Scarpare Filho, Joao Alexio (President)
Kluge, Ricardo Alfredo
Leonel, Sarita
Title in Portuguese
Uso do regulador vegetal 2,4-DP (éster butilglicol do ácido 2,4-diclorofenoxipropiônico) e do anelamento de ramos visando a melhoria na qualidade de frutos de pessegueiro (Prunus persica (L.) Batsch).
Keywords in Portuguese
fisiologia pós-colheita
pêssego
práticas culturais (fitotecnia)
regulador de crescimento vegetal.
Abstract in Portuguese
A coloração e o tamanho são fatores determinantes na qualidade dos frutos de caroço. Por este motivo, foram utilizadas duas práticas culturais, anelamento de ramos e aplicação de regulador vegetal, com o objetivo de melhorar a qualidade de frutos de pessegueiro na cultivar de meia estação Biuti. Os tratamentos foram realizados na fase de endurecimento do caroço e utilizou-se 0; 12,5; 25 e 50 mg L -1 do regulador vegetal 2,4-DP, com e sem anelamento de ramos. Com base nos resultados obtidos, pôde-se concluir que os tratamentos não se mostraram eficazes quanto à antecipação da colheita. Ocorreu um aumento no peso médio de frutos com até 100 gramas, na primeira colheita, nas plantas tratadas apenas com anelamento de ramos. Em relação aos frutos com mais de 105 gramas, ocorreu uma diminuição do peso médio nas plantas aneladas, na primeira colheita, à medida que se aumentavam as concentrações do regulador vegetal. Além disso, não houve diferenças significativas quanto ao pH do suco, acidez total e teor de sólidos solúveis totais em nenhum dos tratamentos avaliados. No entanto, os frutos das plantas tratadas apresentaram coloração intensificada da casca em relação aos de plantas não tratadas.
Title in English
The use of 2,4-dp (2,4-diclorophenoxypropionic acid butylglycol ester) growth regulator and the ringing branches to enhance the quality of peach fruits (Prunus persica (L.) Batsch).
Keywords in English
fitotecnia
growth regulator
peach
physiology after-harvest .
Abstract in English
Coloring and size are decisive factors of pit fruit quality. For this reason, it was used two cultural practices, the ringing branches and the growth regulator application, to enhance fruit quality of Biuti, a middle season peach cultivar. The treatments were done at pit hardening and it was used 0; 12,5; 25 and 50 mg L -1 of 2,4-DP growth regulator, with and without the ringing branches. According to the results, it was concluded that treatments were not efficient to bring harvest forward. It had an increase at medium fruit weight until 100 grains, at first harvest, only in the peach trees that were ringed. It had a decrease in medium fruit weight over 105 grains in ringed trees, at first harvest, by the way in witch growth regulator concentrations were increased. There were not significant differences in pH fruit juice, total acidity and total soluble solid concentration at any treatment. However, there was an enhancement in fruit peel coloring at treated trees.
 
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Publishing Date
2004-02-09
 
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