Fruit growing
and viticulture of South Russia

Annotation

The reaction norm of the introduced wine grape variety Merlot in unstable conditions of the moderately continental climate of the south of Russia has been established. The research was carried out in the agroecological conditions of the Black Sea viticulture zone of the Krasnodar region in the industrial vineyards of the GC �Abrau-Durso� using modern methods of field research. Agrobiological accountings were carried out using the methods of agrotechnical study of grapes. The climate at the research areais moderate continental. The average annual air temperature is 14.1 ºC, during the growing season (May � September) is 22.2 ºC, the maximum rises to plus 37.0 ºC, the minimum during the wintering period of grapes falls to minus 19 ºC. The annual amount of atmospheric precipitation is 544 mm, during the growing season � 208 mm, during the active growth of grape berries (II. June-III. august) � 96 mm. The grape plant reacts with the modification variability of phenotypic traits to the variation of environmental conditions. The lower limit of the modification variability of the cluster mass is 98 g and the upper limit is 121 g., the grape yield is 3.3 kg/bush and 6.8 kg/bush, the sugar content of the grape berries juice is 20.1 g/100 cm3 and 21.6 g/100 cm3 . The reaction norm is 23 g, 3.5 kg/bush and 1.5 g/100 cm3 , respectively. Against the background of the application of fertilizers, the lower and upper limits of the modification variability increased respectively: the cluster mass by 16 % and 9 %, the grape yield by 48 % and 16 %, the sugar content of the grape juice of by 10 % and 7 %. The reaction norm decreased: reduction for the cluster mass as phenotypic trait was 22 %, for the grape yield � 14 %, and for the sugar content of the berry juice � 67 %.

Annotation

The most important technique of agricultural technology to increase the productivity and quality of grapes is pruning of bushes, the length of which depends on the most productive zone of shoots. To determine the zone of the greatest production of the shoot, the embryonic fruitfulness of the buds is estimated, depending on the biological characteristics of the grape varieties and agroecological factors of the location, both natural (weather and climatic, soil and spatial conditions) and anthropogenic (management system, pruning, fertilizer use, etc.). In 2018, we studied the special aspects of inflorescences formation and differentiation of new table grapes hybrid forms of E.S. Gusev breeding (Volgograd) under the arid and hot conditions of the Volgograd. Territory in this work research results are presented of the embryonic fruitfulness of the new table grapes hybrid forms of Ispolin, Courage, Hamlet, Valencia, Artek, Timothy in the Krasnodar Region. The study of embryonic fruitfulness was carried out in the vineyards growing in the agroecological conditions of the Krasnodar Region Central Zone, subzone � 4. Selection of the studied shoots and assessment of the embryonic fruitfulness of buds under winter were carried out during the period of deep physiological rest of plants by microscopy (Micromed MS1) in the laboratory of NCFSCHVW. The regularity of different laying and differentiation of embryonic inflorescences in the studied grapes hybrid forms, as well as differentiated coefficients of fruitfulness and fruiting along the length of shoots are established. The highest rates of fruiting and fruitfulness were in the grape hybrids of Hamlet, Artek and Timothy under the conditions of temperature stress, the highest embryonic productivity was observed in the zone 6-8 wintering buds.

Annotation

The article presents the results of assessing the physiological state of new self-rooted hybrid forms of table grape Akello, Artek, Valencia and Courage growing in the Krasnodar Territory in the summer period. The cultivar Livia of Russian selection was selected as a control. Artificial drought was simulated in a laboratory conditionS. After stress effect, the following physiological parameters of grape leaves were analyzed � the degree of damage to cell membranes (based on the content of malondialdehyde, one of the products of lipid peroxidation of cell membranes), the relative water content, the quantum yield of the photochemical reaction of photosystem II, the content of chlorophyll a and the ratio of a/b chlorophylls. It was found that the most depressed month for the studied grape plants was July. This is evidenced by the averaged indicators of studied grape plants according to the analyzed parameters � low values of photosynthesis and relative water content in the leaves and increased level of malondialdehyde, which determines the intensity of the development of oxidative processes by the influence of negative factors. The greatest adaptive potential in this month was revealed in the Artek hybrid form, which had high value of photosynthesis and a low level of malondialdehyde content. In August, the hybrid forms of Artek and Courage were characterized by high values of the relative water content in the leaves and low value of malondialdehyde, and besides the level of chlorophyll a fluorescence (quantum yield) did not change compared to July. The hybrid Valencia form had the highest value of malondialdehyde and the lowest value of relative water content during the summer period, which makes it the least resistant form among the studied. The hybrid form of Artek was identified as the most resistant form to influence of summer stress factors in the territory of Krasnodar region. Further, this form can be recommend for the creation of stable ampelocenoses.

Annotation

The paper present the experimental data of field studies in the central agroecological zone of viticulture of the Krasnodar Territory to optimize the load of grape bushes with shoots and bunches of the Livya variety on the Shasla × Berlandieri 41B rootstock on drip irrigation. The scheme of bushes planting is 3.8 × 2 m, the formation of bushes is a high-standard two-armed cordon. The soils are low-humus, powerful leached chernozems. The average annual air temperature on the zone condition is 12.5-13.0 º�, the sum of active air temperatures is 3900- 4100 º�, the maximum temperature during the plants growing season is plus 40 º�, the minimum temperature in winter drops to minus 30 º�. The annual amount of precipitation is 700-800 mm. Under these agroecological conditions, the grape variety Livya on the Shasla × Berlandieri 41B rootstock showed high responsiveness to optimizing the load of bushes with shoots and bunches. When the bushes are loaded with shoots of 26 pieces / bush and bunches are in the amount of 24 pieces / bush, the average weight of a grape bunch reaches the highest value and is 0.767 kg. The highest yield of 31 t / ha with the highest share of marketable yield of 97 % is formed when the bushes are loaded with shoots and bunches in the amount of 26 and 35 pcs / bush, respectively. With such regulations for the load of bushes, the average mass of a grape bunch is 15 % less and is 0.669 kg. The optimized regulation of the load of bushes with shoots and bunches in the amount of 26 and 35 pcs. / bush, respectively, can be recommended in the central agroecological zone of viticulture of the Krasnodar Territory for growing high yields and good quality of Livya grapes.

Annotation

Based on experimental studies, the production variability of table grape variety Pamyati Uchitelya was established when manipulating the load of bushes with shoots and bunches. Field studies were carried out in the Central agroecological zone of viticulture of the Krasnodar region, the planting scheme of the bushes is 3.5 × 3.5 m, the formation of bushes is a high-standard two-armed cordon, the rootstock is Berlandieri × Riparia SO4. The average annual air temperature at the study area is 12.5-13.0 ºC, the sum of active temperatures is 3900-4100 ºC, the maximum temperature during the growing season is plus 40 ºC, the minimum in winter drops to minus 30 ºC. The annual precipitation is 700-800 mm. The soils are low-humus, leached powerful chernozems. The grape variety Pamyati Uchitelya has a high production responsiveness to manipulations with the vegetative and generative organs of plants under such agroecological conditions. There is a change in the bunch weight and the grape yield, depending on the load of the bushes with shoots and bunches. The largest bunch weight (0.551 kg) is formed at the lowest load of bushes with shoots of 18 pcs/bush and bunches of 27 pcs/bush in the Central agroecological viticulture zone of the Krasnodar region. The correlation dependence of the average bunch weight of grapes on the number of shoots was very weak, r = 0.1, on the number of bunches � inverse and weak, r = -0.26. The highest yield capacity was at the highest load of bushes with shoots (30 pcs/bush) and bunches (54 pcs/bush) and amounted to 19.40 t/ha. The correlation dependence of yield capacity on the number of shoots on the bushes was weak, r = 0.2, on the number of bunches � medium, r = 0.5, on the bunch weight � strong, r = 0.7.