Prospective and real productivity of black currant new hybrids selected in the Far-Eastern Agrarian University

The yield of black currant is one of the most important economic indicators of the variety. It is determined by many factors; one of them is morphological features of a bush: the number of main branches, length of shoots, the number of tassels (bunches), the number of berries in the bunch and the mass of berries. The article explores differences in the real and prospective productivity of new black currant hybrids in the selection of Far-Eastern State Agrarian University. The researchers investigated two hybrids, identified by the results of many years research in the selection garden. Novosel variety was chosen as a control one as it has higher taste properties of berries and productivity than other zoned variety Amurskiy konservnyy. The research was carried out in accordance with the program and methods of variety study of fruit, berry and nut crops, developed in Russian Research Institute of Fruit Crops Selection in 1999. Prospective productivity of new hybrids of black currant is much higher than that of the control variety Novosel. New varieties of black currant have longer fruit-bearing shoots and greater number of bearing nodes. Otherwise, the real yield does not differ significantly from the control one. The differences in real and prospective productivity are mainly determined by external factors. This indicates the necessity to develop varietal agricultural machinery that reduces crop losses.  The article highlights the reasons that result in decrease in the real productivity of black currant. They are high temperatures in the ripening period. One of the studied hybrids (9-26) is promising for horticulture in Amur region, as it has bigger berries than that of zoned varieties.