Rooting of semihardwood cuttings of cataia collected in four seasons

Drymis brasiliensis Miers is a specie of the Winteraceae family, commonly known as cataia or pepper bark. This research was carried out with the aim to study the rooting of semihardwood cuttings, subjected to different concentrations of indolebutyric acid (IBA), collected in four seasons of the year...

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Veröffentlicht in:Ciência rural 2015-10, Vol.45 (10), p.1815-1818
Hauptverfasser: Zem, Luciele Milani, Zuffellato-Ribas, Katia Christina, Radomski, Maria Izabel, Koehler, Henrique Soares
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Sprache:eng
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Zusammenfassung:Drymis brasiliensis Miers is a specie of the Winteraceae family, commonly known as cataia or pepper bark. This research was carried out with the aim to study the rooting of semihardwood cuttings, subjected to different concentrations of indolebutyric acid (IBA), collected in four seasons of the year (autumn, winter, spring and summer). Cuttings were prepared with 10-12cm length, keeping two halved leaves. Bases of cuttings were treated as follows: control (100% water), 0; 500; 1500; 3000; 4500 and 6000mg L-1 IBA.One hundred and twenty after the planting the following variables were assessed: rooting percentage, number of roots per cutting, length of roots per cutting, cutting callus percentage, cuttings with new shoots and number of cuttings that maintained the initial leaves. The indolebutyric acid is not recommended for rooting of Drimys brasiliensis cuttings. The cuttings collected in winter were the ones that showed greatest rooting percentage (46.96%) for the production of nursery plant of Drimys brasiliensis. Drimys brasiliensis Miers é uma espécie pertencente à família Winteraceae, popularmente conhecida como cataia. O trabalho foi realizado com o objetivo de avaliar o enraizamento de estacas semilenhosas, submetidas a diferentes concentrações de ácido indol butírico (AIB), coletadas nas quatro estações do ano (outono, inverno, primavera e verão). As estacas foram preparadas com 10-12cm de comprimento e duas folhas cortadas pela metade na porção apical. As bases das estacas foram submetidas aos tratamentos: testemunha (100% água), 0, 500, 1500, 3000, 4500 e 6000mg L-1AIB. Após 120 dias em casa de vegetação, avaliaram-se a porcentagem de estacas enraizadas, o número de raízes por estaca, o comprimento das três maiores raízes por estaca, a porcentagem de estacas com calos, as estacas com novas brotações e as estacas que mantiveram as folhas iniciais. O ácido indolbutírico não é recomendado para o enraizamento de estacas de Drimys brasiliensis. As estacas coletadas no inverno foram as que apresentaram melhor porcentagem de enraizamento (46,96%) para a produção de mudas.
ISSN:1678-4596
1678-4596
DOI:10.1590/0103-8478cr20140534