Apricot inroduction test on midland of Russia

The results of long-term introduction test of three types of apricot are presented in the study: Prunus armeniaca L., Prunus mandshurica (Maxim.) Koehne and Prunus sibirica L. (Rosaceae). The research was conducted in Moscow (GBS Russian Academy of Sciences) and Belgorod (Botanical Garden of BELSU) where selection work on the selection of winter-hardy varieties with fruits of high quality was conducted. The task of the study included the identification of the variability limit of some economically important morphometric and biochemical characteristics of the fruits of apricot. As a result of the study, it was established that the fruits of Prunus armeniaca were 29.2-43.1 mm long, 28.1-42.0 mm wide, and the mass of fruits in Moscow was 10.8-35.7 g, in Belgorod - 9.5-37.1 g. The mass of Prunus mandshurica fruits averaged15.5 g, in Prunus sibirica -7.9 g. In Prunus armeniaca fruits, the share of the stone accounts for about 10-13 % of the total fruit mass, which positively characterized the quality of the fruits...