Influência de malhas fotoconversoras nos aspectos anatômicos e fisiológicos de mudas de Talisia esculenta (A. St. –Hil.)Radlk

Abstract

The present study was conducted with the purpose of identifying which colored-shade nets (blue, white, black and red), promotes changes in growth and development, that is, their effects on physiological and morphological characteristics of Talisia esculenta (A.St.-Hil) Radlk, popular pitomba. The experiment was undertaken in a completely randomized design. For the experiment with nets, morphological, anatomical, and photosynthetic and production surveys of secondary compounds, it was identified that the plants of T. esculenta responded differently for each characteristic investigated. Morphologically, plants under white ne presented larger leaf area, higher fresh and dry weight of leaves and roots. The plants under blue net developed thicker cuticles, presented a higher number of vascular bundles and with greater diameter and there was no significant difference for the adaxial epidermis as well as for the abaxial face. The nets did not interfere in the carrying out of photosynthesis in any of the parameters investigated. Regarding the secondary compounds, the blue and red net promoted greater concentration of photosynthetic pigments and production of phenolic compounds as compared the white and black nets. By means of morphological and histochemical analyses, the fruits of Talisia esculenta were characterized; standing out that the species is responsive to the environment in which it lies. The anatomical and physiological responses of T. esculenta corroborate the fact that the responses to variations in the light spectrum are inherent to each species.