<b>Quebra de dormência em macieiras 'Fuji Kiku' com uso de extrato de alho</b>

Abstract

ResumoA utilização de produtos químicos, que promovam e uniformizem a brotação e a floração, em frutíferas de clima temperado vem trazendo grande preocupação devido ao seu efeito tóxico para o homem e pela dependência de poucos produtos para essa finalidade. No intuito de buscar uma solução para esse problema, o experimento foi instalado em pomar comercial de macieiras 'Fuji kiku' no município de Guarapuava-PR, utilizando os seguintes tratamentos:Foram avaliadas as seguintes variáveis: porcentagem de brotação, número de frutos por planta, massa do fruto, sólidos solúveis totais, acidez total titulável e produtividade. Os tratamentos com extrato de alho tiveram efeito na superação da dormência, não interferindo nas características físico-quimicas dos frutos. De maneira geral a brotação foi baixa devido a baixa quantidade de frio acumulado e o período de seca após quebra da dormência. Palavras-chave: Malus domestica Borkh, Allium sativum L, frutas de clima temperado, brotação AbstractThe use of chemicals that promote and standardize the sprouting and flowering on temperate fruit trees is causing great concern due to its toxicity to humans and the dependence on few products for that purpose. In order to seek a solution to this problem, An experiment was installed in a commercial orchard of Fuji Kiku apple trees in the county of Guarapuava-PR, using the following treatments: controlThe following variables were evaluated: percentage of sprouting, number of fruits per plant, weight, total soluble solids, total acidity and yield. The treatments with garlic extract took effect on break dormancy, not interfering in the physical and chemical characteristics of the fruit. In general the shooting was low due to low amount of accumulated chilling units and dry period after the break dormancy.

Alternative budburst inducers for kiwifruit vines grown in an organic system

“…Garlic is efficient to break dormancy, since its extract is rich in diallyl disulfide, a compound that destroys glutathione and increases H 2 O 2 levels when in contact with buds. As a result, it leads to respiratory alteration, inhibits glucose enzymes, changes carbon flow, triggers metabolic modifications and favors the expression of SNF-like protein-kinases, which transfer the signal that ends bud dormancy (PERUSSI, 2010;El-AMARY and EL-HAMIED, 2018). Low efficiency of Welsh onion as a budburst inducer may be a result from the fact that it does not have high concentrations of diallyl disulfide.…”

Aplicação E Avaliação De Diferentes Corantes Naturais Em Células Solares

“…D e E, que anteriormente( Figura 4). Em macieiras cultivar "Kiku", Perussi, et. al., (2010) verificaram que todos os tratamentos com extrato de alho na região de Guarapuava-PR tiveram efeito na superação da dormência, conforme o observado neste experimento, com a cultura da nogueira pecan.…”

Budbreak induction in kiwifruit vines cultivated in an organic system by the biological method of single node cutting

“…Dependence on hydrogenated cyanamide is a problem that affects all temperate fruit trees. Perussi et al (2010) studied the effect of garlic extract (GE) on dormancy break in apple trees (Malus domestica) and carried out an experiment in which one of the treatments was hydrogenated cyanamide. They concluded that the rest-breaking agents that led to the highest budbreak average were Bioalho (GE, Natural Rural S.A.) mixed with mineral oil (MO) and natural garlic (a product which results from garlic extraction by cold pressing) mixed with MO.…”

“…These, when applied to the bud, cause an increase in H 2 O 2 levels, inducing oxidative stress and subsequently budding sprouting. There is also another theory, described by Perussi et al (2010), where garlic contains allyl alcohol, which converts into a toxic aldehyde when it undergoes oxidation by the enzyme alcohol dehydrogenase, destroys glutathione and, consequently, increases H 2 O 2 levels. This process triggers many metabolic changes and does not keep buds in the dormancy stage.…”