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Bosque (Valdivia)

versão On-line ISSN 0717-9200

Resumo

MUNOZ, Marisol  e  MOLINA, Ricardo. Effect of indole butyric acid (IBA) and cutting age on rooting in Myrceugenia exsucca. Bosque (Valdivia) [online]. 2016, vol.37, n.3, pp.637-641. ISSN 0717-9200.  http://dx.doi.org/10.4067/S0717-92002016000300021.

Among the species that live in wetlands Myrceugenia exsucca is a highly important tree for the protection of areas with frequent flooding, edges in watercourses and streams. This study therefore is aimed at evaluating the effect of the application of indole butyric acid (IBA) and the age of the material on rooting in the M. exsucca cuttings. A completely randomized design, factorial, with two types of cutting: juvenile and mature, and six concentrations of IBA (0, 1,000, 2,000, 3,000, 4,000 and 5,000 mg L-1) were tested. Six replications; each replicate consisted of 10 cuttings. The trial was conducted in a warm bed, with temperatures between 20 and 25 °C. The variables studied were: survival (%), callus formation (%), rooting (%), root number, root length (cm) and new leaves. The age of cuttings had significant effects on all variables. The application of IBA had significant effects on the survival and rooting cuttings. The best results, over 85 % of rooting were obtained with cuttings from juvenile material and with the two higher doses of IBA.

Palavras-chave : Myrceugenia exsucca; vegetative propagation; swamp forest.

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