The aim of this research was to evaluate the feasibility of rescuing adult plants by cuttings from post-fire epicormic shoots. We evaluated the native tree species erva mate ( Ilex paraguariensis St. Hil.) and canjerana ( Cabralea canjerana Vell. Mart.), which present difficult seedling production and are economically and ecologically important. The plant material used for the preparation of cuttings consisted of shoots from bud differentiation of tissue from the stem collar of the trees. One-bud cuttings of erva mate were treated with 4000 or 8000mg L-1 of indolebutiric acid (IBA) and the checks were not treated with auxins. The cuttings were grown in three different substrates: carbonized rice husks, vermiculite and coarse sand. The experiment was a factorial with a completely random design and five replicates of five cuttings. One-bud cuttings from the basal, intermediate and apical parts of canjerna shoots were treated with 0 or 6000mg L-1 of IBA and planted in commercial substrate and coarse sand (3:2 v/v). The experiment was a factorial with a completely random design and ten replicates of three cuttings. Cuttings from post-fire epicormic shoots can be used for rescuing erva mate and canjerana adult plants. Erva mate cuttings treated with 8000mgL-1 IBA have increased rooting when grown in coarse sand. Canjerana cuttings from the basal part of epicormic shoots have greater survival and rooting than those from intermediate and apical parts.
Experiments were conducted with the species Aechmea distichantha and Vriesea hieroglyphica aiming to improve the management of native bromeliad production. Seedlings of V. hieroglyphica and A. distichantha were planted on substrates sphagnum, forest litter, phenolic foam flakes and carbonized rice husk (BRH), Pinus bark (PB) and Eucalyptus bark (EB) with vermiculite in proportions of 1:1, 1:2 or 1:3). The experimental design was a randomized block consisting of 4 replications with 12 plants per plot, totaling the 12 treatments. Evaluations were performed after 270 for Vriesea hieroglyphica and 125 days for Aechmea distichantha of experimentation and the variables diameter and height of seedlings, number of leaves and dry matter mass of shoot system were evaluated. Our results showed that V. hieroglyphica and A. distichantha seedlings respond different in relation to substrate composition. Vermiculite is not recommended for V. hieroglyphica and A. distichantha seedlings cultivation. Sphagnum and forest litter are the best substrate media for V. hieroglyphica and A. distichantha seedlings growth after the germination process.
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