Ammonium nitrate and potassium nitrate on in vitro peach palm somatic embryos development

作者：dos Santos Thais Lobo; de Almeida Cristina Vieira; Brondani Gilvano Ebling; de Almeida Marcilio

来源：Ciencia Rural, 2010, 40(7): 1655-1659.

• Pejibaye
• nitrogen
• Bactris gasipaes
• micropropagation

Pejibaye is a good alternative for the extractive exploration of species such as jucara and acai However when it is produced by seeds its planting is heterogeneous, which makes micropropagation a good alternative for cultivation in large scale. This study aimed to evaluate the influence of the interaction between ammonium nitrate and potassium nitrate on peach palm somatic embryos rooting in vitro cultivated, for optimization of the micropropagation protocol. The embryos were inoculated in MS medium with different concentrations of NH(4)NO(3) and KNO(3). Morphophisyologic parameters of root development were measured at 120 and 240 days of cultivation. At 120 days, at lower nitrogen concentrations, roots were stimulated to grow and major root branching occurred at low concentrations of NH(4)NO(3) and high concentrations of KNO(3). At 240 clays, there was a reduction of the root growing, with more percentage of thin roots. It was concluded that up to 120 days, the microplants should be cultivated in culture medium with lower concentrations of NH(4)NO(3), and higher concentrations of KNO(3) than those recommended by MS medium, and after this period they should be cultivated at the recommended doses.

• 出版日期2010