Abstract

OTEGUI, Monica B et al. Seed conservation of palo-rosa. Rev. cienc. tecnol. [online]. 2016, n.25, pp.15-19. ISSN 1851-7587.

Aspidosperma polyneuron is a climax species of the rainforest tropical forest that has been intensively exploited causing its population decline in the province of Misiones. their reduction in populations of Misiones. To preserve conserve it in gene banks, the behavior and longevity of ultra-dried seeds were studied. The seeds were dehydrated to 3% of moisture content and stored in airtight containers at 8 ± 2 °C. Viability and vigor were measured through germination percentage, and vigor, through mean germination time and germination rate index, at 0, 7, 20, 48 and 60 months of age using the variables germination rate, mean germination time and germination speed index.. Seeds of A. polyneuron behaved as orthodox, preserving its viability and vigor for 60 months when they were subjected to ultra-dry method. This method could solve the shortage of seeds during the long periods between production seasons. The first germination showed no significant difference while the other two presented some deterioration caused by storage. Results indicate that it is possible to extend the longevity of A. polyneuron seeds for long periods solving the shortage of seeds between production seasons.

Keywords : Palo-rosa; Seed storage; Ultra-drying; Forest seeds.

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