The peculiarities of phenology and yield variations of Sakhalin raspberry fruits (Rubus matsumuranus Levl. & Vaniot)in the Upper Kolyma area (Magadan region)

Seasonal development and dynamics of the crop of fruits of Sakhalin raspberry (Rubus matsumuranus Levl. & Vaniot) have been studied in the west of Magadan Region in headwaters of the Kolyma River. The purpose of the researches is the assessment of variability of dates of approach of phenological phases of Sakhalin raspberry during 2003-2019 and the identification of climatic factors influencing the fluctuations of productivity of fruits. The tasks are the synthesis of this phenological supervision over populations of raspberry and the establishment of the dependence of productivity of fruits on climatic indicators. Phenological observations have been made since 2003 up to the present; the productivity is estimated by eye with Kapper-Formozov's scale. Meteorological supervision on field hospital of IBPN FEB RAS have been conducted since 1992. The course of seasonal development of raspberry (13 phenohpases) and the features of passing of separate stages are described. During 2003-2019 there have been essential changes of the course of seasonal development of Sakhalin raspberry...