Uso de fitorreguladores no desenvolvimento de frutos na atemoieira (Annona cherimola x A. squamosa cv. Gefner)

Abstract

The effect of plant growth regulators in the development of fruit of atemoya (Annona cherimola x A. squamosa cv. Gefner)This study aimed to to evaluate the effect of plant growth regulators on the fruit set of atemoya 'Gefner'. Three experiments were carried out in the municipality of Matias Cardoso, North of Minas Gerais. In the first experiment four types of auxins, indol-butyric acid (IBA), indol-acetic acid (IAA), naphthaleneacetic acid (NAA) and dichlorophenoxyacetic acid (2,4-D) were evaluated combined in three concentrations (150, 300 and 450 mg L -1 ). The giberellic acid (GA 3 ) also was used in the dosage of 1 g L -1 , at 14 and 21 days after the first application of the auxins. In the second experiment the IAA, IBA and NAA were tested combined in two concentrations (450 and 600 mg L -1 ). In the third experiment, the use of NAA was evaluated in the dose of 450 mg L -1 associated with number of applications: weekly up to 35 days; weekly up to 70 days; weekly up to 105 days and every 2 weeks. The GA 3 was used in the dosage of 1 g L -1 , in four applications, to 13, 27, 41 and 54 days after the first application of NAA. In all of experiments, the

Determining the preliminary performance of selected Annonaceae cultivars in subtropical conditions

“…The organoleptic characteristics of fruits have a defined genetic range and gene expression is influenced by climatic conditions and orchard management (Moura et al, 2021(Moura et al, , 2019b. The variation in the physical characteristics of fruits of annona species is also related to pollen source and load (Lau et al, 2017), pollen viability (Araújo et al, 2021;Pereira et al, 2014a) and the methodology and timing of pollination (Alves Rodrigues et al, 2018;Mota Filho et al, 2012;Pereira et al, 2014b).…”

Combined application of plant regulators in young fruits modifies biometric characteristics and germination of atemoeira seeds cv. 'Thomson'

“…Currently, the combination of these products in fruits and vegetables has been widely used, due to the positive influence on the increase and quality of the harvest. They are compounds that accelerate plant growth, ranging from pollen tube development, attachment to the mother plant, to controlling maturation and stimulating seed germination (Mota Filho et al,2012;Schaller et al, 2015;Fetter, 2018;European Parliament, 2019).…”