GERMINAÇÃO DE SEMENTES DE Hyptis suaveolens (L.) POIT. (LAMIACEA) EM FUNÇÃO DA LUZ E DA TEMPERATURA

Abstract

This work aimed to evaluate the influence of light and temperature on germination of Hyptis suaveolens seeds. The seeds were harvested at Mossoró/RN city and the experiment developed in at the Laboratory of Seed Analysis of the Department of Agriculture of the Federal University of Lavras at Lavras/MG. The treatments was consisted of four temperatures (20ºC, 25ºC, 30ºC and 20-30ºC) and two light conditions (light and darkness). The treatments consisted of 200 seeds, with four repetitions of 50 seeds each, sown on a two Germitest towel paper, displayed inside gerbox, and maintained for 30 days in germination chamber. A completely randomized constituted design with 2x4 factorial design (two light expositions x four temperatures) was used with 4 replicates of 50 seeds. The Scott-Knot¿s Test at 5% of probability was used to compare the obtained averages. There was significant difference in the interaction temperature x shines, in the two variables. It can be concluded that the largest germination of seeds happened in the light presence and in high temperatures. And that the temperatures alternated of 20-30ºC, 30ºC and 25ºC are favorable for germination of seeds of Hyptis suaveolens.