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      Mini-cutting of Plathymenia reticulata benth. with ministumps conducted in suspended seedbed and tubes

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          Abstract

          ABSTRACT Background: Despite the importance of Plathymenia reticulata for forestry and ecological purposes, a protocol for the vegetative propagation of the species remains unclear mainly due to the low adventitious rooting of the propagules of the species. In this sense, this work aimed to evaluate the rooting of mini-cuttings of juvenile materials of P. reticulata and our hypothesis: (1) maintaining propagules under mist chamber for different periods affects the rooting process; (2) the mini-stump management system due to the restriction of the root system affects the production of mini-cuttings and the quality of clonal seedlings. Results: It was not necessary for more than 30 days in a mist chamber to induce rooting. The highest percentage of rooting was obtained 50 days after staking. Mini-gardens set up in suspended seed bed and tubes (280 cm3) had the average mini-cuttings productivity of 4.32 and 2.06, respectively, over 270 days of exploration (monthly collections). At 120 days after staking, there was no difference in the survival and in the final quality of clonal seedlings produced. However, clonal seedlings from mini-garden in tubes had higher height, leaf area, and number of first-order roots. Regardless of the mini-garden management, the clonal seedling production index was 50%. Conclusion: We can conclude that P. reticulata seedling production via mini-cutting technique is possible.

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          QUALITY APPRAISAL OF WHITE SPRUCE AND WHITE PINE SEEDLING STOCK IN NURSERIES

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            Modern applied statistics with S

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              Produção e sobrevivência de miniestacas e minicepas de erva-mate cultivadas em sistema semi-hidropônico

              O objetivo deste trabalho foi avaliar a viabilidade técnica do sistema semi-hidropônico para condução de minicepas de erva-mate e a resposta destas a soluções nutritivas de diferentes diluições nas sucessivas coletas, bem como, a sobrevivência das miniestacas produzidas neste sistema, após enraizamento. Depois de onze coletas, obteve-se 95,6% de sobrevivência das minicepas e média de 291 miniestacas m-2 de minijardim. As mudas obtidas por miniestaquia apresentaram média de 85,6% de sobrevivência, sem variação significativa entre as soluções testadas e número da coleta. O sistema adotado é tecnicamente viável, e recomenda-se a utilização de solução nutritiva menos concentrada.
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                Author and article information

                Journal
                cerne
                CERNE
                CERNE
                UFLA - Universidade Federal de Lavras (Lavras, MG, Brazil )
                0104-7760
                2317-6342
                2021
                : 27
                Affiliations
                Campos dos Goytacazes Rio de Janeiro orgnameUniversidade Estadual do Norte Fluminense Brazil
                Article
                S0104-77602021000100500 S0104-7760(21)02700000500
                10.1590/01047760202127012584

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

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                Figures: 0, Tables: 0, Equations: 0, References: 71, Pages: 0
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                Categories
                Silviculture

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