Germinação de sementes de pau-de-espeto (Casearia gossypiosperma) em diferentes temperaturas

Abstract

The species Casearia gossypiosperma is a tree, Salicaceae family, and its wood is suitable for civil construction, afforest, and landscaping. Due to its economic potential, ecological importance, and lack of information on its germination process, the aim of this research was to evaluate seed germination at different temperatures. The seeds used were collected from Pantanal de Miranda, Mato Grosso do Sul - Brazil and were submitted to six different temperatures, constant of 20, 25, 30 and 35 °C and alternating, 20-30 and 25-35 °C, in germination chambers. The results revealed that most seeds germinated at 25 and 30 °C, producing 83 and 84% of germination, higher germination speed (10,0 at 25 °C and 10.7 at 30 °C), and the greatest seedlings (10.3 mm at 25 °C and 10.8 mm at 30 °C). Therefore, the best temperatures to germination are between 25 and 30 °C.