Abstract:A pitangueira é uma frutífera nativa com potencial para exploração comercial. Entretanto, os métodos de propagação mais comuns não são satisfatórios para a multiplicação desta espécie em larga escala. O objetivo do trabalho foi o de avaliar o uso do método de enxertia de garfagem no topo, em fenda cheia e dupla fenda, bem como a melhor época para a realização desta prática (julho, agosto e setembro), nas condições do Sul do Brasil. O experimento foi conduzido no ano de 2005, na Embrapa Clima Temperado, Pelotas… Show more
“…Similar values were obtained by Franzon et al (2008), with 60.4% genetic similarity in Brazilian cherry tree populations with AFLP (Amplified Fragment Length Polymorphisms) markers. Salgueiro et al (2004) also obtained 78.9% of genetic variability with AFLP markers in Brazilian cherry populations that were at least 99 km from each other and had no known interaction between them.…”
“…Similar values were obtained by Franzon et al (2008), with 60.4% genetic similarity in Brazilian cherry tree populations with AFLP (Amplified Fragment Length Polymorphisms) markers. Salgueiro et al (2004) also obtained 78.9% of genetic variability with AFLP markers in Brazilian cherry populations that were at least 99 km from each other and had no known interaction between them.…”
“…Foi realizada a enxertia por garfagem no topo em fenda cheia, método recomendado para vários genótipos de pitangueira no nordeste brasileiro, e no sul do Brasil por Bezerra et al (2002), Franzon et al (2008; Nesse caso, a aplicação de auxinas resulta em pouca ou nenhuma melhoria na resposta de enraizamento (Hartmann et al, 2011). (Hopkins, 2000).…”
The aim of this study was to evaluate the viability of the minicutting technique in the vegetative propagation of Surinam cherry (Eugenia uniflora L.), through productivity and survival of ministumps, and rooting of minicuttings originating from grafting and treated with different concentrations of indolebutyric acid (IBA) in the successive collections. The ministumps were obtained through grafting (cleft graft) of scions collected from the selected tree onto rootstock formed by seeds collected from the same tree. To create the minigarden, the grafted seedlings were grown in root plugs and their sprouts were pruned, maintaining one pair of leaves on each sprout. From these ministumps, successive collections of sprouts (minicuttings) were made. A completely randomized experimental design was used in a 4 x 4 factorial arrangement (four periods of collection of minicuttings x four concentrations of IBA), with four replications and 20 minicuttings as an experimental unit. The survival rate of the ministumps was 100% after four successive collections of sprouts. In the higher temperature period was possible to carry out two collections of shoots. Mean yield was 2.4 minicuttings/ministump, 598.9 minicuttings/m2 in the first collection time, and 2.7 minicuttings/ministump, 681.1 minicuttings/m2 in the second collection time. Mean yield was 384.4 minicuttings/m2 /month. It was adventitious rooting of less than 1.9%. The rooting of minicuttings from grafting of the Surinam cherry is not favored with the use of IBA.
“…Uma notória carência de informações é observada na produção de mudas desta espécie, principalmente no que se refere ao uso de substratos, adubação (base e cobertura), época de preparo e plantio das mudas, mesmo sendo a propagação por sementes o método mais utilizado para a produção de mudas desta espécie. (BEZERRA et al, 2000;FRANZON et al, 2008). Tendo em vista a grande importância de se obter mudas de boa qualidade e que mantenham um determinado padrão, há a necessidade de se identiicar os fatores que melhoram a qualidade destas mudas, sendo que o tipo de substrato utilizado inluencia diretamente a qualidade da muda, e por consequência, a qualidade do fruto e a produtividade da planta (FRAZON et al, 2010).…”
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