Formation of a model of lettuce (Lactuca sativa L.) variety of the Batavia type for hydroponic cultivation

Relevance. Currently, there is a tendency to increase the volume of lettuce cultivation in hydroponics. Such specific conditions for growing lettuce hydroponically as high humidity in the root zone, different levels of illumination throughout the year and specific mineral nutrition, dictate a number of necessary characteristics that varieties should possess. In addition, the lettuce variety for hydroponics should consistently give high yield and have good consumer qualities. Accordingly, it is necessary to carry out selection separately for specific hydroponic conditions. And for theoretical justification of the selection of lettuce varieties for this technology and increasing the efficiency of the breeding process, it is necessary to form a model of the variety, which was the goal of this research.Methods. The 13 most common lettuce varieties were research: 8 light green and 5 dark green Batavia. The morphological characteristics of plants in the phase of industrial ripeness were described and the biometric traits of plants were determined.Results. Based on research in 2021-2023 the 13 most commonly hydroponically grown lettuce varieties of the Batavia variety have been defined as the variety model criteria for hydroponics. The characteristics of a leaf rosette, leaf blade, indicators of early ripening and productivity inherent in these varieties were identified, and a model of the variety was formed on their basis.