Analyzes of the trophobiosis based on the ecophysiologic and biochemical responses of collard green and sweet pepper under organic and conventional crops

Abstract

According to the Trophobiosis Theory, every vegetal organism is vulnerable to the pest infestation and illness when excess of free amino acids and sugar reductor species are present in the metabolic system, causing favorable conditions to its feeding, growth and reproduction. These conditions can occur because of every metabolic disturbance caused by the physiological stress of the plants. The trophobiosis is directly related to the agro-ecological management of the crops, helping out to the physiologic vegetal resistance and agro-ecosystem sustainability. The objective of this study was to analyze the trophobiosis in organic and conventional crops of vegetables (collard green and pepper), based on the analyses of the biochemical parameters (chlorophyll, protein, proline, sugar) and ecophysiological responses (photosynthesis, transpiration and stomatic conductance). The results obtained demonstrate evidences of the influence of the agro-ecological management in the crop of the collard green, promoting metabolic system equilibrium and contributing to the production system sustainability.