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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of gibberellin inhibitors applied during flowering of nonirrigated 'Hass' avocado trees

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Author(s):
Bruna do Amaral Brogio [1] ; Simone Rodrigues da Silva [2] ; Tatiana Cantuarias-Avilés [3] ; Sérgio Figueiredo Angolini [4] ; Edypol Guilherme Baptista [5] ; Rafael Vasconcelos Ribeiro [6]
Total Authors: 6
Affiliation:
[1] Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz. Departamento de Produção Vegetal - Brasil
[2] Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz. Departamento de Produção Vegetal - Brasil
[3] Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz. Departamento de Produção Vegetal - Brasil
[4] Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz. Departamento de Produção Vegetal - Brasil
[5] Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz. Departamento de Produção Vegetal - Brasil
[6] Universidade Estadual de Campinas. Instituto de Biologia. Departamento de Biologia Vegetal - Brasil
Total Affiliations: 6
Document type: Journal article
Source: Pesquisa Agropecuária Brasileira; v. 53, n. 8, p. 918-923, 2018-08-00.
Abstract

Abstract: The objective of this work was to evaluate the effect of different gibberellin biosynthesis inhibitors on shoot growth above the panicle, as well as on fruit yield, size, and shape of nonirrigated 'Hass' avocado (Persea americana) trees. The experiment was carried out in a randomized complete block design, with five treatments, four replicates, and 40 trees. From 2013 to 2015, the following treatments were applied at full bloom, as foliar sprayings: water (control), 250 mg L-1 prohexadione-calcium, 2,500 mg L-1 trinexapac-ethyl, 1,750 mg L-1 paclobutrazol, and 350 mg L-1 uniconazole; the first two are acylcyclohexanediones and the last two, triazoles. Fruit yield, yield efficiency, and alternate bearing were not affected by the application of plant growth regulators. However, the gibberellin inhibitors increased fruit size and modified the fruit shape of nonirrigated 'Hass' avocado. Uniconazole reduces shoot growth above the panicle, and this effect may vary depending on environmental conditions, especially water supply. (AU)

FAPESP's process: 13/11524-0 - Use of plant bioregulators on avocado (Persea americana Mill.) groves in subtropical environment
Grantee:Simone Rodrigues da Silva
Support Opportunities: Regular Research Grants