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Agronomía Colombiana

versão impressa ISSN 0120-9965

Resumo

HERNANDEZ P., María Isabel et al. Germination behavior and characterization of seed dormancy of Andean blueberry (Vaccinium meridionale Swartz)   . Agron. colomb. [online]. 2009, vol.27, n.1, pp.15-23. ISSN 0120-9965.

After characterizing germination and dormancy of Andean blueberry, a dormancy release procedure was developed. These are basic aspects of germplasm conservation, planting and improvement. The seeds did not display exogenous dormancy under water imbibition in a moist substrate. However, a positive photoblastic response was observed. A tetrazolium test indicated that 15.8% of the seeds were n viable; 21.2% were dormant viable, and 63% germinated. Germination and dormancy release at 20°C were higher than at 25°C. Seed dormancy was almost completely released after 500; 1,000 and 2,000 mg L-1 GA3 applications under constant white light at 20°C. Dormancy was classified as non deep physiological.

Palavras-chave : promissory species; photoblastic seeds; tetrazolium; seed physiology; Colombia.

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