Комплексная оценка сортов кукурузы по устойчивости к засухе [Articol]

Abstract

This article presents the results of an evaluation of drought resistance in local maize varieties. The field experiments were conducted under natural conditions, with yield serving as the primary evaluation criterion. In laboratory conditions, drought resistance was assessed at early stages of ontogeny using a 20% solution of PEG 6000. The plant material included four mid-early and four midlate local maize varieties from the collection of the Plant Genetic Resources Laboratory of the IGPPP, MSU. The climatic conditions of 2024 allowed for effective testing of drought resistance, as water deficit stress was particularly pronounced during the flowering and grain-filling stages. In field trials, the yield obtained without irrigation was used as the key indicator of drought resistance. A positive correlation (r = 0.5) was observed between drought resistance in mid-early varieties under both natural and controlled (laboratory) conditions.