THE STUDY OF INTRODUCED RASPBERRY VARIETIES IN THE ORYOL REGION CONDITIONS

Abstract

The work was carried out on the basis of the laboratory of physiology of resistance of fruit plants at VNIISPK in 2019-2021. Scottish cultivars Glen Ample, Glen Lyon and Glen Magna; English cultivars Joan J and Octavia and Polish cultivar Laszka were studied. The introduction of new cultivars should be accompanied by a characteristic not only of their productivity, but primarily of winter hardiness. We analyzed the winter hardiness of introduced raspberry cultivars in the field and laboratory conditions. By modeling the main components of winter hardiness, the stability potential of experimental raspberry cultivars was revealed. In the field, according to the results of three–year studies, frost-resistant cultivars Glen Ample, Glen Lyon, Glen Magma, Laszka were isolated (damage to the buds and tissues of annual shoots no more than 2.0 points) at the level of the control cultivar. According to the results of artificial freezing, Glen Ample, Glen Magma and Laszka were characterized by the greatest resistance potential for the main components of winter hardiness. Biological accounting was applied when studying the cultivar characteristics of the crop load. A number of fruit-bearing shoots, number of berries from one shoot and bush, the size of berries, as well as the biological yield from one shoot and bush were determined. Glen Ample with very large berries (6.1 g) was identified. The high actual yield was shown by Glen Ample, Glen Magma, Glen Lyon, Laszka (above 15 t/ha). As a result, promising introduced raspberry varieties Glen Ample, Glen Magma, Laszka were identified for further breeding and production cultivation in the conditions of the Orel region.