TY - JOUR AU - Oliveira, Ademir Kleber Morbeck AU - Ribeiro, Jonathan Wesley Ferreira AU - Pereira, Kelly Cristina Lacerda AU - Silva, Cássila Andréia Araújo PY - 2012/06/28 Y2 - 2024/03/29 TI - Temperatures for germination of Tabebuia ochracea (Cham.) Standl seeds JF - Comunicata Scientiae JA - Com. Sci. VL - 3 IS - 2 SE - Original Article DO - 10.14295/cs.v3i2.93 UR - https://comunicatascientiae.com.br/comunicata/article/view/93 SP - 98-103 AB - <span style="font-size: xx-small;"><span style="font-size: xx-small;"><span style="font-size: xx-small;"><font size="1"><p>The</p></font><em><span style="font-family: Century Gothic,Century Gothic; font-size: xx-small;"><em><span style="font-family: Century Gothic,Century Gothic; font-size: xx-small;">Tabebuia ochracea </span></em></span></em><span style="font-family: Century Gothic,Century Gothic; font-size: xx-small;"><span style="font-family: Century Gothic,Century Gothic; font-size: xx-small;">species is an ornamental tree when in full bloom and its wood, very hard and resistant, is used in construction, manufacture of railway sleepers and poles, among other uses and is one of the most commonly used species in reforestation project. The objective of this study was to evaluate the germination of seeds of </span></span><em><span style="font-family: Century Gothic,Century Gothic; font-size: xx-small;"><em><span style="font-family: Century Gothic,Century Gothic; font-size: xx-small;">T. ochracea </span></em></span></em><span style="font-family: Century Gothic,Century Gothic; font-size: xx-small;"><span style="font-family: Century Gothic,Century Gothic; font-size: xx-small;">under different temperatures. Germination tests were conducted with four sub-samples of 50 seeds in a Petri dish lined with paper germitest, kept in BOD chambers where they were tested for germination following constant temperatures: 20, 25, 30, 35, 20-30 e 25-35 ºC. The experimental design was completely randomized design with four replications of 50 seeds. The data expressed in percentages and means compared by Tukey test at 5% probability. The </span></span><em><span style="font-family: Century Gothic,Century Gothic; font-size: xx-small;"><em><span style="font-family: Century Gothic,Century Gothic; font-size: xx-small;">T. ochracea </span></em></span></em><span style="font-family: Century Gothic,Century Gothic; font-size: xx-small;"><span style="font-family: Century Gothic,Century Gothic; font-size: xx-small;">showed a broad range of germination between the temperatures studied, upper 93%. The best speed of germination and mean germination time were found at temperatures of 25, 30 and 35 </span></span><span style="font-size: xx-small;">o</span><span style="font-family: Century Gothic,Century Gothic; font-size: xx-small;"><span style="font-family: Century Gothic,Century Gothic; font-size: xx-small;">C. The measures of dry weight and length of primary root showed equal growth rate for all temperatures. </span></span></span></span></span> ER -