Production of pre-basic potato plants by cuttings obtained from micropropagated plants

• Autor(es):

  Pereira, Jonny Everson Scherwinski (Embrapa Acre);

  Fortes, Gerson Renan de Luces (Embrapa Recursos Genéticos e Biotecnologia).

• Fonte:

  Horticultura Brasileira; volume 22, número 2, páginas 186-192. Junho 2004.

• Assuntos:

  Solanum tuberosum L.;

  rooting;

  vegetative propagation;

  basic seed;

  tissue culture.

• Resumo:

  The use of cuttings from micropropagated potato plants can become an efficient technique to improve the multiplication rate of potato genotypes of high genetic quality and sanitary level. A protocol for the production of pre-basic potato material by microcuttings, obtained from plants with a short period of acclimatization, was established. The influence of cutting position (basal, medium and apical), the collection period (15 and 30 days), the immersion time (zero and one minute) in different IBA concentrations (0; 250; 500; 750 and 1000 mg L-1), and substrate types (sand and vermiculite) were analyzed in two experiments. Basal, medium and apical microcutting position presented rooting rates up to 90% when collected from 15 days acclimatization potato plants followed by treatment through fast immersion in IBA solution at 500 mg L-1 and in sand or vermiculite as substrate.

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