Organogênese direta de mesocótilos de arroz (Oryza sativa L.) = Direct organogenesis of rice (Oryza sativa L.) mesocoptiles

作者
Maristela dos Santos Rey,Daiane Schmidt de Pinho,Anieb Prestes Vieira,Eugênia Jacira Bolacel Braga,Carlos Roberto Pierobom,José Antônio Peters
出处
期刊:DOAJ: Directory of Open Access Journals - DOAJ
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摘要

O objetivo deste estudo foi verificar o efeito do Thidiazuron (TDZ) naregeneração in vitro de mesocótilos de duas cultivares de arroz. Para tal finalidade, os explantes foram inoculados em meios MS contendo diferentes concentrações de TDZ. Os resultados indicam que ocorreu um efeito significativo da concentração do regulador de crescimento em relação à taxa de regeneração e comprimento de brotações. Para a variável comprimento das brotações houve, também, uma interação entre os fatores cultivar e concentração do regulador de crescimento. Para os brotos de primeira passagem observaram-se diferenças significativas na taxa de regeneração das cultivares, bem comoentre as doses e interação entre doses e cultivares. Todas as concentrações de TDZ utilizadas originaram brotações vitrificadas. The objective of this work was to study the effect of Thidiazuron (TDZ) in the in vitro regeneration of rice cultivars. The explants were transferred to MS medium containing different concentration of TDZ. The results indicate that doses were significant on shootregeneration and growth shoots. For the length of the shoots the interaction cultivar/concentration of TDZ was significant. For the shoots of first passage showing significant differences in the regeneration rate of cultivars, as well as among the concentrations and interaction these factors. All the utilized TDZ concentrations also originated vitrified shoots.

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