Caracterização agronômica de linhagens de alface lisa e mimosa em cultivo convencional e hidropônico

Abstract

Lettuce (Lactuca sativa) is the most consumed and commercialized leafy vegetable in Brazil and worldwide, consumed mainly raw in salads, and comes in various varieties, each with its own characteristics. The genetic improvement of this crop aims to enhance its qualities for better production and yield. The objective of this study was to evaluate and compare the agronomic characteristics in the conventional system and hydroponic system (NFT) of 5 lines and varieties of butterhead lettuce (Biofort 01, F6 204 1-1-2, Regina, Janine, and Biofort 05), and 8 lines and varieties of crisphead lettuce (F6 240409 1-1-2, F5 38G 1-3, Nataly, Bolinha, Angélica, Maraisa, F7 37G 1-3-4, and F5 252G 1-1), evaluating the following attributes: fresh aerial part mass, height, diameter, number of leaves, stem length, stem diameter, leaf length, leaf width, brightness, and physiological disorder. The experiment was conducted in a randomized design with four replications and each replication with sixteen plants, with the four central plants of each replication being evaluated. For the comparison of the mean of the cultivars, the Scott-Knott test was used at 5% significance. The statistical analysis was performed using the R software, which made it possible to analyze the data and reach the results that the ideal genotype for the conventional system was F6 204 1-1-2 and F6 293 6-2-1 and for hydroponics the genotype F6 204 1-1-2 and F6 293 6-2-1 for presenting greater resistance to bolting and a good volume of leaves and fresh mass.