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2018, № 73

UDC: 634.711
GSNTI: 68.35.53

Frost resistance of the root system of everbearing raspberry under simulated conditions

The research was conducted in 2017-2018 on the basis of the department of applied and experimental development of Siberian Institute of Plant Physiology and Biochemistry of the Siberian Branch of the Russian Academy of Sciences (SIPPB SB RAS), Irkutsk. The object of the study was 5 varieties of everbearing raspberry from the collection of fruit and berry crops of the Common Use Center “Bioresource Center of SIPPB SB RAS”, from the selection of the Kokinsky base of the All-Russian Horticultural Institute for Breeding, Agrotechnology and Nursery (ARHIBAN) of the Bryansk Region: Brilliantovaya, Gerakl, Nedosyagayemaya, Oranzhevoechudo, Rubinovoyeozherel'ye. Kolokolchik, a variety of common raspberries, zoned for the East Siberian region was taken as a control one. The maximum frost resistance of the root system of everbearing raspberry was studied by the method of artificial freezing under phytotron conditions. The temperature values of the root layer of the Southern Baikal region were determined for the experiments based on the data of the Federal State Budgetary Institution “Irkutsk Department for Hydrometeorology and Environmental Monitoring” (FSBI “Irkutsk DHEM”). The damage degree to tissues by negative temperatures was assessed by changing their color on sections, in points from 0 to 5 according to the program and method of sorting fruit, berry and nut-bearing crops, edited by Academician E.N. Sedov. The research resulted in revealing the fact that the root system of everbearing raspberry is less frost-hardy, than the one of common raspberry. Significant damage to the roots was detected at minus 15оC. All the studied varieties of everbearing raspberry show good wintering results in the field conditions of the Southern Cis-Baikal region; according to many years of observations, the temperature in the root layer was below 10оC in very rare cases.
Keywords: Everbearing raspberry, varieties, frost resistance, the Southern Cis-Baikal region, root layer
DOI: 10.21515/1999-1703-73-170-174

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Authors:

1. Pushchina Marina Yurievna, Phd candidate of the Department of Agriculture and Plant Cultivation, A.A. Ezhevsk Irkutsk State Agrarian University.
2. Rachenko Maxim Anatolievich, Phd in Biology, Senior Research Assistant of the Laboratory of Physiological and Biochemical Adaptation, Siberian Institute of Plant Physiology and Biochemistry, Siberian Branch of the Russian Academy of Sciences.