Comportamiento y Longevidad de Aspidosperma polyneuron Müll. Arg. frente al Ultrasecado

摘要

Aspidosperma polyneuron is a climax species of the rainforest tropical forest that has been intensively exploitedcausing its population decline in the province of Misiones. their reduction in populations of Misiones. To preserveconserve it in gene banks, the behavior and longevity of ultra-dried seeds were studied. The seeds were dehydratedto 3% of moisture content and stored in airtight containers at 8 ± 2 °C. Viability and vigor were measured throughgermination percentage, and vigor, through mean germination time and germination rate index, at 0, 7, 20, 48 and60 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 weresubjected to ultra-dry method. This method could solve the shortage of seeds during the long periods betweenproduction seasons. The first germination showed no significant difference while the other two presented somedeterioration caused by storage. Results indicate that it is possible to extend the longevity of A. polyneuron seedsfor long periods solving the shortage of seeds between production seasons.