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Paclobutrazol on <i>In Vitro</i> Growth and Development of <i>Zygopetalum crinitum</i> Orchid, and on Seedling Acclimatization

2018; Scientific Research Publishing; Volume: 09; Issue: 05 Linguagem: Inglês

10.4236/ajps.2018.95079

ISSN

2158-2750

Autores

Renata Gimenes, Kathia Fernandes Lopes Pivetta, Renata Bachin Mazzini-Guedes, Marcos Vieira Ferraz, Suzana Targanski Sajovic Pereira, Águila Silva Santos, Ricardo Tadeu de Faria, Lívia Caroline Praseres de Almeida,

Tópico(s)

Plant Physiology and Cultivation Studies

Resumo

In vitro cultivation is a technique that allows the production of great amount of plants. However, significant losses may occur during the acclimatization period (ex vitro stage). The objective of this study was to evaluate the effect of paclobutrazol, in the Murashige and Skoog culture medium, on growth, development, and survival of Zygopetalum crinitum plants. The experimental design (both in vitro and ex vitro) was completely randomized with four treatments: three paclobutrazol concentrations (0.5; 1.0; and 1.5 mg L-1 active ingredient) and the control (without PBZ). Morphological changes promoted by the paclobutrazol application were observed in the seedlings; however, it did not result in higher seedling survival rates of the Zygopetalum crinitum orchid.

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