Induction and characterization of oil palm (Elaeis guineensis Jacq.) pro-embryogenic masses

Anais da Academia Brasileira de Ciências

MarlÚcia S. Pádua¹  Luciano V. Paiva¹  ClaÚdia R.g. Labory¹  Eduardo Alves¹  Vanessa C. Stein¹ 

关键词: embryogenic potential;    growth regulators;    tissue culture;    transmission electron microscopy;    potencial embriogênico;    reguladores de crescimento;    cultura de tecidos;    microscopia eletrônica de transmissão;   

DOI  :  10.1590/0001-37652013107912

来源: SciELO

【 摘 要 】

ABSTRACTOil palm is one of the most economically valuable oil seed plants, but the expansion of plantations has been limited by availability of seedlings, as the conventional propagation is through seeds, which have low germination rates. One possible solution for the large-scale production is the use of somatic embryogenesis. The aim of this study was evaluate the effects auxins 2,4-D and picloram on the induction of pro-embryogenic masses inE.guineenesis hybrid leaf explants and characterize, regarding embryogenic characteristics, with cytochemical and ultrastructural analisys. Specifically, in vitro plantlets leaves fragments were inoculated in Y3 culture medium supplemented by 2.4-D or picloram at different concentrations (0.0, 1.0, 3.0, 6.0 and 9.0 mg l–1). After 90 days the presence- absence of cell masses were evaluated. Both growth regulators efficiently induced cellular masses regardless of the concentrations applied. As the cell masses were not homogeneously formed, they were classified according to color and shape into four types: TYPE 1 - elongated and translucent, TYPE 2 – uneven and translucent, TYPE 3 - globular and beige TYPE 4 – globular and white. Based on the anatomical and ultrastructural features, TYPE 2, 3 and 4 cell masses were considered to have the highest embryogenic potential and therefore may be most suited to large-scale vegetative propagation of oil palm.

【 授权许可】

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