TITLE:
Paclobutrazol on In Vitro Growth and Development of Zygopetalum crinitum Orchid, and on Seedling Acclimatization
AUTHORS:
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
KEYWORDS:
Growth Regulator, Growth Retardant, Triazol, Orchidaceae
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.9 No.5,
April
20,
2018
ABSTRACT: 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.