Impact of paclobutrazol on gibberellin-like substances and soluble carbohydrates in pear trees grown in tropical semiarid

Given that Brazilian pear production is unable to meet the annual demand, to consider the possible expansion to non traditional growing regions, turns interesting. Even though under tropical semi-arid conditions pear trees have vigorous vegetative growth, a negative influence on flower bud differen...

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Autores principales: Sousa, Kellem, Lopes, Paulo, Cavalcante, Ítalo, Cunha, Jenilton, Silva, Luan, Pereira, Emmanuella, Lobo, Jackson
Formato: Artículo revista
Lenguaje:Inglés
Publicado: Facultad de Ciencias Agrarias-UNCuyo 2022
Materias:
Pyrus sp.
regulador del crescimiento
ácido giberélico
PBZ
growth regulator
gibberellic acid
Acceso en línea:https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/3744
Aporte de:
Revista de la Facultad de Ciencias Agrarias UNCuyo de Universidad Nacional de Cuyo
id I11-R107article-3744
record_format ojs
institution Universidad Nacional de Cuyo
institution_str I-11
repository_str R-107
container_title_str Revista de la Facultad de Ciencias Agrarias UNCuyo
language Inglés
format Artículo revista
topic Pyrus sp.
regulador del crescimiento
ácido giberélico
PBZ
Pyrus sp.
growth regulator
gibberellic acid
PBZ
spellingShingle Pyrus sp.
regulador del crescimiento
ácido giberélico
PBZ
Pyrus sp.
growth regulator
gibberellic acid
PBZ
Sousa, Kellem
Lopes, Paulo
Cavalcante, Ítalo
Cunha, Jenilton
Silva, Luan
Pereira, Emmanuella
Lobo, Jackson
Impact of paclobutrazol on gibberellin-like substances and soluble carbohydrates in pear trees grown in tropical semiarid
topic_facet Pyrus sp.
regulador del crescimiento
ácido giberélico
PBZ
Pyrus sp.
growth regulator
gibberellic acid
PBZ
author Sousa, Kellem
Lopes, Paulo
Cavalcante, Ítalo
Cunha, Jenilton
Silva, Luan
Pereira, Emmanuella
Lobo, Jackson
author_facet Sousa, Kellem
Lopes, Paulo
Cavalcante, Ítalo
Cunha, Jenilton
Silva, Luan
Pereira, Emmanuella
Lobo, Jackson
author_sort Sousa, Kellem
title Impact of paclobutrazol on gibberellin-like substances and soluble carbohydrates in pear trees grown in tropical semiarid
title_short Impact of paclobutrazol on gibberellin-like substances and soluble carbohydrates in pear trees grown in tropical semiarid
title_full Impact of paclobutrazol on gibberellin-like substances and soluble carbohydrates in pear trees grown in tropical semiarid
title_fullStr Impact of paclobutrazol on gibberellin-like substances and soluble carbohydrates in pear trees grown in tropical semiarid
title_full_unstemmed Impact of paclobutrazol on gibberellin-like substances and soluble carbohydrates in pear trees grown in tropical semiarid
title_sort impact of paclobutrazol on gibberellin-like substances and soluble carbohydrates in pear trees grown in tropical semiarid
description Given that Brazilian pear production is unable to meet the annual demand, to consider the possible expansion to non traditional growing regions, turns interesting. Even though under tropical semi-arid conditions pear trees have vigorous vegetative growth, a negative influence on flower bud differentiation and formation affects fruit yield. Our study aimed to evaluate the inhibition efficiency of paclobutrazol (PBZ) on gibberellin biosynthesis, vegetative growth, and carbohydrate production in two pear-treecultivars (‘Santa Maria’ and ‘Hosui’) grown under semi-arid conditions. To this end, two experiments were conducted, one for each pear-tree cultivar. The experimental designs consisted of randomized blocks, with factorial arrangement (5x2x4), corresponding to PBZ doses (0.0, 0.5, 1.0, 1.5, and 2.0 g per linear meter of plant canopy), PBZ application forms (soil and foliar), and evaluation dates (30, 60, 90, and 120 days after application). Both soil and foliar applications inhibited gibberellin biosynthesis in both cultivars, especially after 120 days of application. PBZ affected leaf total soluble carbohydrates and reduced sprout growth in both cultivars. Although PBZ can be potentially used in pear management, further studies are still required to determine specific management practices in tropical semi-arid zones. Highlights: Inhibition of gibberellin biosynthesis is more efficient with soil application of paclobutrazol. Soil application of paclobutrazol results in greater production of carbohydrates. There is a difference in sensitivity to the effects of paclobutrazol among pear varieties. The non-application of paclobutrazol results in late maturation of the branches, compromising floral induction.
publisher Facultad de Ciencias Agrarias-UNCuyo
publishDate 2022
url https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/3744
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first_indexed 2022-06-20T13:53:29Z
last_indexed 2022-06-20T13:53:29Z
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