BIOMETRIA E ÓLEO ESSENCIAL DE ALECRIM PIMENTA CULTIVADO EM DIFERENTES ÉPOCAS E CONDIÇÕES DE LUMINOSIDADE

Abstract

The use in medicament of species plant is a practice that accompanies humans since the dawn of civilization. Physiological and anatomical changes of vegetables may occur in stress function, especially bright. In this context, aimed to of the present study was to evaluate the growth and the essential oil yield of pepper-rosemary (Lippia origanoides) at conditions of Maciço Baturité, Ceará state, Brazil. The design was completely randomized with split plots and, the plots defined by two seasons: dry (from August to November, 2013) and rainy (from February to May, 2014), the subplots formed by light conditions: shaded greenhouse) and unshaded (full sun evaluated at four times (0, 40, 80 and 120 days after transplanting), with five repetitions. The variables evaluated were: leaf area, height, stem thickness and dry mass of different plant organs, and the yield of essential oil. Regarding the results it revealed that the dry biomass of leaves did not differ between the two environments 120 days cultivation. The results also showed a significant change in rosemary pepper grown in a greenhouse environment, resulting in higher plants, larger leaves, larger leaf area, less development of the root system which indicates that the plant is light sensitive and decrease essential oil yield. The plant of pepper rosemary is sensitive to temperature variation because this causes changes in its morphology and physiology.