A influência da temperatura na germinação de semente de Erythrina sp. na cidade de Pedro II - Piauí

Abstract

The Plantae Kingdom contemplates a great diversity of plants with different characteristics. Among the species considered to be native we can mention the genus of Erythrina, which contemplate a large number of species spread over tropical and subtropical countries such as Brazil. This genus is characterized by having many uses, ranging from the ornamentation of squares and forest parks to the restoration of degraded areas. Like other plants, Erythrina sp. it is subject to the interference of several environmental factors with respect to its germination, as well as its development. In studies carried out it was possible to prove its existence in several Brazilian states. However, when analyzing the predominance of this species in Piaui's territory, it was noticed that few species of this genus are found, even in the city of Pedro II-PI. Therefore, it is assumed that the lack of species of Erythrina in the studied municipality is due to the fact that it presents milder temperatures in relation to other cities in the state. Thus, the present study aimed to evaluate the temperature interference in the germination of Erythrina sp. in the city of Pedro II-PI. Therefore, 36 seeds of Erythrina sp. at different temperatures in order to verify the effect that different temperatures would have on the seed germination process. In addition, it was analyzed that seeds placed at constant temperatures showed a higher germination rate when compared to those that were submitted to unstable ambient temperature. However, it was possible to conclude that numerically the temperature presented itself as an effect that alters both seed germination and plant development. However, when statistically analyzed, the different temperatures did not prove to be significant in the interference in the germination process of Erythrina sp.