A comparative assessment of winter hardiness in varieties and elites of domestic apple trees of various breeding in the conditions of the continental climate of the Samara region

The research was carried out in order to assess the winter hardiness of apple varieties Oryol and Michurinsky selection, as well elite hybrids selection Scientific Research Institute Horticulture Medicinal Plants Zhigulevskie Sady conditions continental climate characteristic Samara region. Freezing annual branches taken from trees 1011 years age laboratory under controlled a freezer at extreme negative temperatures for 2nd (40C) 4th (35C after thaw) components hardiness. After freezing, their damage assessed April, results were compared by research. Simultaneously with assessment laboratory, general condition these field experimental garden Sady, August 2020 2021. adaptation low objects study dependence on agro-climatic growing season basis meteorological data GMC. During study, elites various breeding high identified, surpassing control such Antonovka obyknovennaya, Kutuzovets, Severniy Sinap others this indicator. It is quite logical that winter-hardy trees, absence damage, may have stronger immunity diseases resistance pests. Therefore, widespread introduction new into industrial gardening will contribute creation more favorable agroecological environment gardens region Middle Volga