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      Studies on stem cuttings of kiwi (Actinidia chinensis PL. CV Bruno)

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          Abstract

          The work was carried out to study the effects of some auxins and boron in the rooting of kiwi (Actinidia chinensis Planch cv Bruno) stem cuttings.. These cuttings were treated on the base individually with H2O; NAA 300 mg.L-1; IBA 300 mg.L-1; NAA 300 mg.L-1 + Boron; IBA 300 mg.L-1 + Boron; NAA 0,5%-talc and IBA 0,5%-talc. After the treatments, the cuttings were placed in styrofoam trays with vermiculite under moist conditions for 120 days. The evaluation of auxin and boric acid effects were made by observing rooted stem cuttings percentage; reducing and total sugar analysis (g/100 g of dry matter); and tryptophan analysis (in µg/100 mg of dry matter). The effects of such treatments were observed during four seasons of the year. The results showed that summer season was the best for rooting. Use of IBA or NAA in the cuttings showed to be unnecessary.

          Translated abstract

          O presente trabalho teve como objetivo, estudar o efeito de auxinas sintéticas e do boro, sobre o enraizamento de estacas caulinares de kiwi (Actinidia chinensisPlanch. cv Bruno). As estacas continham dois nós com aproximadamente 10 cm de comprimento, contendo 2 folhas cortadas ao meio. As bases das estacas receberam os seguintes tratamentos: control (H2O); NAA 300 mg.L-1; IBA 300 mg.L-1; NAA 300 mg.L-1 + B; IBA 300 mg.L-1 + B; NAA 0,5%-pó e IBA 0,5%-pó. Após os tratamentos as estacas foram plantadas em bandejas de enraizamento contendo vermiculita pura e colocadas em câmara de nebulização por 120 dias até a coleta das mesmas. Para a avaliação do efeito das auxinas e boro, foram realizadas as seguintes observações: 1. porcentagem de estacas enraizadas; 2. análise de açúcares redutores e açúcares totais (em g/100 g de matéria seca); 3. análise de triptofano (em µg/100 mg de matéria seca). Além disso, foram verificados o efeito dos tratamentos em quatro épocas, que corresponderam às estações do ano (primavera, verão, outono e inverno). Através dos resultados obtidos no processo de enraizamento de estacas caulinares de kiwi (Actinidia chinensis Planch. cv Bruno), conclui-se ser o verão a melhor época de coleta dos ramos para a produção das estacas sem a necessidade do tratamento com auxinas.

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          Most cited references23

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          A photometric adaptation of the Somogyi method to determination of glucose

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            BORON, LIGNIFICATION AND THE ORIGIN OF VASCULAR PLANTS-A UNIFIED HYPOTHESIS

            D H Lewis (1980)
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              Plant anatomy

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                Author and article information

                Journal
                babt
                Brazilian Archives of Biology and Technology
                Braz. arch. biol. technol.
                Instituto de Tecnologia do Paraná - Tecpar (Curitiba, PR, Brazil )
                1516-8913
                1678-4324
                2000
                : 43
                : 1
                Affiliations
                [01] Botucatu SP orgnameUniversidade Estadual Paulista orgdiv1Instituto de Biociências orgdiv2Departamento de Botânica
                [02] Botucatu SP orgnameUniversidade Estadual Paulista orgdiv1Instituto de Biociências orgdiv2Departamento de Bioestatística Brasil
                Article
                S1516-89132000000100007 S1516-8913(00)04300107
                10.1590/S1516-89132000000100007
                0a367bd5-e2ca-40f3-b063-b77210c5e634

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 06 August 1999
                : 17 December 1997
                : 29 March 1998
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 25, Pages: 0
                Product

                SciELO Brazil

                Categories
                Articles

                Actinidia chinensis,IBA,NAA,boron,rooting
                Actinidia chinensis, IBA, NAA, boron, rooting

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