Desiccation and storage at low temperatures increases vigor in Handroanthus heptaphyllus (Vell.) Mattos seeds
DOI:
https://doi.org/10.20873/jbb.uft.cemaf.v13n3.20737Keywords:
pink ipê, germination, conservation, short-term conservationAbstract
In order to evaluate the physiological behavior of seeds during desiccation and storage and to propose strategies for short-term seed conservation, we desiccated H. heptaphyllus seeds to different moisture contents (20, 10 and 5%) and stored them at -20 °C for seven months. After three, five and seven months, 100 seeds from each treatment were evaluated for germination, speed index and average germination time. The means were compared (α ≤ 0.05) between the different treatments and those obtained from seeds with 32% moisture, not desiccated and stored at 10 °C, in each period. H. heptaphyllus seeds are intermediate, can be stored at -20 °C, desiccation equal to or less than 10% compromises viability, but when desiccated to 20%, they maintain viability and low fungal infestation. New approaches for seed conservation of this species are suggested.
Key-words: Pink Ipê, germination, intermediate behavior, short-term conservation, seeds.
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