RESPOSTAS MORFOANATÔMICAS E FISIOLÓGICAS DE Inga cylindrica (VELL.) MART. A INUNDAÇÕES SIMULADAS

Abstract

In the era of global climate change, the risk of large-scale disasters has increased. In this scenario, floods become frequent in a commonly un flooded environment, changing local conditions and affecting plant establishment. Thus, the anatomical and physiological structure of plants can be considered a relevant ecological indicator of the adaptations of plant species in the flooded areas. Thus, the objective was to evaluate the morphoanatomical and physiological characteristics of Inga cylindrica after partial and total flooding, in order to verify the potential for tolerance of this species to flood conditions. Young plants of I. cylindrica with approximately 20 cm were used submitted to partial and total flooding for a period of 21 consecutive days. Subsequently, the characteristics morphoanatomical in which the partial treatment subjects developed lenticelas and the two treatments were evaluated the appearance of aerenchyma occurred. The histochemical analysis for both partial and total treatments demonstrated in the leaves and roots the presence of phenolic compounds, for the physiological parameters of gas exchanges occurred a score of 9% in the gas exchanges, the photosynthetic rate decreased 72%. With the results obtained, the species I. cylindrica proved to be tolerant of total flooding conditions.