Z. E. Ozherelieva, А. S. Lyakhova
Russian Research Institute of Fruit Crop Breeding, pos. Zhilina, Orlovskii r-n, Orlovskaya obl., 302530, Russian Federation
Abstract. The work was performed in 2019–2020 in the Orel region. The object of the research was Turgenevka cherry variety on clonal rootstocks bred in the Russian Research Institute for Breeding Fruit Crops: OVP-2, Rubin, V-2-180, 74322, 74324, 74332, 74336, 74340, and 74363. The purpose of the research was to study the indicators of the water regime (water content, water deficit, dry matter content, and restoration of water content) of plants of Turgenevka variety on dwarf rootstocks in connection with their heat and drought resistance. The maximum level of water content in the leaves was noted during the period of intensive growth of shoots and the formation of the leaf apparatus (June). We established a close direct relationship between water content in cherries and average daily air temperature (r = 0.89–1.00). During the ripening period of the fruits of scion rootstock combinations with Turgenevka variety, the greatest decrease in moisture content in the leaves was 5.8%. At the same time, we registered an increase in the concentration of dry matter in them. Against the background of the accumulation of dry matter, the water content decreased as the leaf age changed. The water deficit of cherry scion-rootstock combinations depended on the hydrothermal conditions in the summer period. We established a close relationship between the value of this indicator and the average daily air temperature (r = 0.82), as well as with the amount of precipitation (r = -0.75). The greatest water deficit in the field experiment was noted during the period of shoot growth and formation of leaf apparatus (on average, 12.5%). The highest potential for heat and drought resistance was revealed in combinations of cherry variety Turgenevka with rootstocks 74324 and 74322.
Keywords: cherry (Prunus cerasus L.); variety; Turgenevka; clonal rootstocks; water regime; water content; water deficit; dry matter; water content restoration.
Author Details: Z. E. Ozherelieva, Cand. Sc. (Agr.), leading research fellow (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); А. S. Lyakhova, Cand. Sc. (Agr.), senior research fellow.
For citation: Ozherelieva ZE, Lyakhova АS [Study of the water regime of scion-rootstock combinations of cherries]. Dostizheniya nauki i tekhniki APK. 2021;35(4):45-9. Russian. doi: 10.24411/0235-2451-2021-10407.