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Results of long-term of field and biochemical researches on studying of compatibility of the apricot with clonal rootstocks are presented. It is shown, that in conditions of the Moscow area development of plants and their state depend on the degree of compatibility scion/stock combinations. Reduction of trees longevity of combinations of varieties ‘Alesha’ and ‘Samarskiy’ on SVG-11-19 is marked. Incompatibility of apricot with the stock SVG-11-19 had a slowed down nature and was manifested in the form of fractures at the place of inoculation in the garden at the age of 1-6 years. In laboratory conditions it is established high antioxidant activity of leaves and bark at well compatible combinations (varieties ‘Alesha’ and ‘Samarskiy’ on stock OD-2-3). It is marked reduction of this parameter on 20 % at scion/stock combinations with insufficient compatibility (varieties ‘Alesha’ and ‘Samarskiy’ on stock SVG-11-19). Differences on antioxidant activity of leaves during active growth of plants have been expressed more strongly, than at research of bark in the beginning of vegetation. The effect of rootstock on the qualitative composition of secondary metabolites of leaves was established by the method of high-performance liquid chromatography, as evidenced by differences in the chromatographic profiles of alcohol extracts of the leaves of the studied varieties. With the help of electronic microscopy anomalies in regeneration and differentiations of fabrics in zone of accretion at incompatible combinations of apricot were revealed, Представлены результаты многолетних полевых и лабораторных исследований по изучению совместимости абрикоса с клоновыми подвоями. Показано, что в условиях Московской области развитие привитых растений и их состояние зависели от степени совместимости привойно-подвойных комбинаций. Отмечено снижение долговечности деревьев комбинаций Алёша и Самарский на СВГ-11-19. Несовместимость абрикоса с подвоем СВГ-11-19 носила замедленный характер и проявлялась в виде отломов по месту прививки в саду в возрасте 1-6 лет. В лабораторных условиях установлена высокая антиоксидантная активность листьев и коры у хорошо совместимых комбинаций (сорта Алёша и Самарский на подвое ОД-2-3). Отмечено снижение этого показателя на 20 % у привойно-подвойных комбинаций с недостаточной совместимостью (Алёша и Самарский на СВГ-11-19). Различия по антиоксидантной активности листьев в период активного роста растений были выражены сильнее, чем при исследовании коры в начале вегетации. Методом высокоэффективной жидкостной хроматографии установлено влияние подвоя на качественный состав вторичных метаболитов листьев, о чем свидетельствуют различия хроматографических профилей спиртовых экстрактов листьев исследуемых сортов. С помощью электронной микроскопии выявлены аномалии в регенерации и дифференциации тканей в зоне срастания у несовместимых комбинаций абрикоса, №3 (2018)

The analysis of long-term experimental data on growth and effi ciency of an apricot at cultivation on clonal stocks is submitted. It is shown, that in conditions of Moscow area apricot varieties had high winter hardiness and good fructifi cation. Development of plants, their effi ciency and durability was essentially infl uenced not only by the variety, but also the rootstock and the degree of their compatibility. There was marked the reduction of growth and dimensions of the crone in comparison with the seed stock of the cherry plum on the rootstock 140-1 and SVG-11-19. Acceleration of the introduction into fructifi cation was promoted by clonal rootstocks OD-2-3 and 140-1. The greatest effi ciency was characteristic for stock/scion combinations Samarskiy on OD-2-3, Samarskiy on 13-113, Lel on OD-2-3. Reduction of productivity and durability of trees on rootstocks 140-1 and SVG-11-19 is connected with the deterioration of the general common condition of the plants, caused by winter damages and insuffi cient compatibility. For the multiplication of apricot northern varieties it is recommended to use the clonal rootstocks 13-113, OD-2-3 and the seed rootstock of the cherry plum Fundamentalnaya.