The aim of this work was to study the mechanism of climatic adaptation of red currant genotypes (Ribes rubrum L.) on the basis of physiological, biochemical and agrometeorological measurements and to determine the different phenophases of plant development identify adaptive genotypes for introduction. The studies were carried out in 2014–2017. The indicators of the water status of annual shoots (water content, water retention capacity), the biochemical composition of berries (vitamin C) and phenological observations were evaluated, taking into account meteorological data. The genotypes of R. petraeum Wulf. and R. multiflorum Kit. had the longest production period. Ambiguous data on the influence of temperature on the content of ascorbic acid in berries were revealed. High temperatures (>+26 °C) contributed to a greater accumulation of ascorbic acid in the cultivars of R. vulgare Lam. High accumulations of vitamin C in the range of +25–27 °C were found in R. petraeum Wulf. and R. multiflorum Kit.. High water content and water loss contributed to early recovery from the dormant state and reduced resistance to spring temperature changes in R. vulgare Lam. Genotypes of R. vulgare Lam., and R. multiflorum Kit. are promising for growing in a zone with a temperate continental climate. The genotypes of the species R. petraeum Wulf are suitable for introduction to the areas with a continental climate. The obtained results are important for adaptive gardening.
The purpose of the research is to study the effect of the feeding area of Gala potato, the use of fungicides on the yield and quality of tubers in the Middle Urals. This research was carried out on the experimental field of the educational and experimental farm “Uralets” of the Ural State Agrarian University, the village “Studencheskiy”, during 2016-2018, in the climatic zone of the Middle Urals. The feeding area influenced the mineral and biochemical composition of tubers, especially the content of nitrogen, phosphorus, potassium, dry matter, vitamin C and others. The calculation of the economic efficiency of potato showed that during the years of research, the production cost fluctuated within the range of 4446 - 9446 rubles/ton, the profit from 63 724 to 269 172 rubles/ha and the level of profitability in the range of 24.66-165.43%.
The creation of therapeutic rose garden on the territories of medical institutions in the Crimea is urgent and extremely necessary. 25% of the modern assortment of garden roses have different scents. A huge potential for therapeutic rose gardens is represented by the collection of roses of the Nikitsky Botanical Garden. Based on it, the scent of 92 rose varieties from 8 garden groups was evaluated: hybrid tea, cluster-flowered, grandiflora, semi-climbing (Shrub), climbing (Climber), polyanthous, cover-ground and miniature roses. 46 varieties with an intense scent and 25 varieties with an average aromatic power were identified. The qualitative evaluation of the scent was subjective. The scent intensity was determined by the evaluation scale of decorative tea-hybrid roses in points. As a result, the assortment of fragrant roses recommended for the therapeutic rose gardens on the territory of the City Hospital № 3 n.a. Dasha Sevastopolskaya has been developed. Based on the assortment of fragrant roses with scent intensity of 3, 2, and 2-3 points, a rose garden project was created and presented.
The primary task when breeding new varieties of essential-oil-bearing rose is to increase the essential oil content and quality. The purpose of the present research is to study the essential-oil-bearing rose collection variability in terms of the essential oil content and component composition and to identify opportunities for isolating the specimens promising for selection. The study of a collection of 112 specimens was carried out in 2017–2020 in the context of the piedmont of Crimea. The decanted essential oil content was determined using the hydrodistillation method. The component composition of rose essential oil was analyzed by gas chromatography on Crystal 5000.2. The essential oil components were identified by comparing their Kovats retention indices to the literature values. A high variability in the essential oil content in the collection (Cv = 36.3% at the average, over 4 years) and the major components content in the essential oil (Cv = 22.1–45.9%) was found. In the context of the piedmont of Crimea, the major components’ percentage content in essential oil from all the specimens including the five Bulgarian varieties did not meet the GOST ISO 9842-2017 standard requirements. This is indicative of a high-degree sensitivity to the soil and weather conditions in the region. It was found that the citronellol, geraniol, and nerol content in essential oil dropped significantly in extreme high temperature and drought conditions. Seven specimens rich in essential oil contained in the raw plant material (0.030–0.049%) and thirteen specimens with a high yield of concrete (0.31–0.39%) were identified and have been recommended for inclusion in the breeding process.
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