Mecanismos fisiológicos e bioquímicos do milho crioulo pixurum 05 em regime de déficit hídrico sob aplicação de bioinsumos

Abstract

Creole corn grown under the application of bioinputs can be a sustainable alternative for mitigating water stress. In this sense, the present study aimed to evaluate the use of bioinputs in the physiological, biochemical and growth responses of Pixurum 05 creole corn plants, cultivated under a water deficit regime. With this, determine the behavior of chlorophyll content, gas exchange, antioxidant system and oxidative stress levels of creole corn subjected to different doses of Efficient Microorganisms, Bokashi and water deficit. Finally, evaluate whether treatments with bioinputs increase the resistance to water deficit of Pixurum 05 creole corn. The study was carried out in a greenhouse, located in the experimental area of the UFFS campus in Erechim/RS, during the period from February to April 2023. Biochemical analyzes were carried out at the Biochemistry and Entomology Laboratory at UFFS in Erechim/RS, and physiological and growth analyzes were carried out on site. The experimental design was entirely randomized (DIC) in a 2x6 factorial scheme – two water regimes (70 and 100% of pot capacity - CP) and six different treatments (TC; BK; ME1; ME2. ME1+BK. ME2+ BK). The experimental data were subjected to the Shapiro-Wilks and Levene tests at 95% significance. Analysis of variance was carried out, in which the developments that proved to be significant were analyzed. The results demonstrated that in a 70% Pot Capacity regime, changes in growth parameters, biochemical and physiological metabolisms of plants are altered. The results show that plants treated with bioinputs have a biochemical response that supports better growth compared to control plants, especially under water stress conditions, however more research with different dosages and bioinputs in the area must be carried out in order to expand the discussion with the data obtained.