Evaluation of the growth, drought tolerance and biochemical compositions of introduced red currant cultivars and Russian breeding genotypes in temperate continental climate

The aim of the work was to study the growth, drought tolerance and biochemical characteristics of introduced cultivars (‘Jonkheer van Tets’, ‘Hollandische Rote’ and ‘Viksne’) and some selected Russian cultivars and red currant genotypes (‘Shchedraya’, ‘Natali’, 129-21-61, 111-19-81, 261-65-19 and 271-58-24). The studies were conducted between 2014 and 2018 under temperate continental climate conditions. The intensity of transpiration was determined by using a torsion balance. The soluble solid concentration (SSS – % Brix) of the fruits was determined by using a digital refractomer. The content of the sum of sugars was determined by the weight method according to Bertrand's method. Ascorbic acid content was then determined by the iodometric method. The total phenolic content was determined by a colourimetric method. Climatic conditions were found to have significant influence on the disease severity of the red currant genotypes, while the infections caused by Sphaerotheca mors-uvae increased in optimum seasons and damages caused by Pseudopeziza ribis increased in drought seasons. None of the selected genotypes was found to be resistant to any of the diseases/pests, but ‘Jonkheer van Tets’, ‘Hollandische Rote’ and 111-19-81 were less affected by these diseases/pests. Weight, yield and raceme length of berries and the number of berries in a raceme were found to be higher in optimum seasons, and different cultivars/genotypes had superior characteristics for different parameters. The highest berry weight was observed in the 261-65-19 genotype (0.65 g), while the highest yield was noted in ‘Hollandische Rote’ (15.6 t · ha−1). It was also found that the water content of leaves and transpiration have a strong positive relationship with soil moisture at a depth of 0–200 mm but a week correlation with soil moisture at a depth of 200–400 mm. Results also showed that the transpiration of leaves decreases in later developmental stages (July). Hierarchical clustering suggested four clusters: the introduced cultivars produced one cluster, Russian cultivars are another cluster, 261-65-19, 111-19-81 and 129-21-61 genotypes make up a third cluster and the 271-58-24 genotype (superior in terms of phenolic contents) forms the fourth cluster.

Agrometeorological and Morpho-Physiological Studies of the Response of Red Currant to Abiotic Stresses

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.

Genetic Differentiation in Anthocyanin Content among Berry Fruits

Anthocyanins are widely distributed secondary metabolites that play an essential role in skin pigmentation of many plant organs and microorganisms. Anthocyanins have been associated with a wide range of biological and pharmacological properties. They are also effective agents in the prevention and treatment of many chronic diseases. Berries are particularly abundant in these compounds; therefore, their dietary intake has health-promoting effects. The aim of this study was to identify and determine the anthocyanin content in selected species and cultivars of berry fruits, such as raspberry, blackberry, red currant, blackcurrant, and highbush blueberry, widely consumed by Europeans. The concentrations of anthocyanins were determined by HPLC, identifying individual compounds: cyanidin-3-O-glucoside, pelargonidin-3-O-glucoside, delphinidin-3-O-glucoside, delphinidin-3-O-rutinoside, cyanidin-3-O-rutinoside, delphinidin-3-O-galactoside, cyanidin-3-O-galactoside, and malvidin-3-O-galactoside. The experimental data showed that the selected species and cultivars of berry fruits differ significantly in the contents of anthocyanins. Among all species tested, blackberry and blackcurrant were characterized significantly by the highest content of anthocyanins (sum), while the lowest content was found in red currant fruits. Additionally, the content of individual anthocyanin compounds in particular species and cultivars was also different. Considering the high content of anthocyanins and their potential positive impact on human health and protection against disease, berries should be part of healthy nutrition.

L’invaginazione ileocolica

Ileo-colic intussusception is a major cause of intestinal obstruction in early childhood. Diagnosis of this condition might be hampered by variability in clinical presentation. Indeed, the so-called “classic” symptoms, namely abdominal pain, red currant jelly stool, vomiting and palpable mass, may not be present. Nevertheless, prompt diagnosis and treatment are critical to prevent bowel perforation or necrosis and peritonitis. Pneumatic reduction of intussusception with an air enema is the usual treatment. The aim of this study is to highlight the main clinical features of ileo-colic intussusception and its management.

PHONOSTRUCTURAL FEATURES OF THE MEDICINAL AND EDABLE PLANTS’ NAMES IN THE YAKUT LANGUAGE IN COMPARISON WITH THE EVENK LEXEMES

В статье рассматриваются фоноструктурные особенности якутских наименований лекарственных и пищевых растений в сравнении с эвенкийскими лексемами. С глубокой древности растительный мир играет важную роль в деятельности коренных народов Севера. Лексика растительного мира якутского языка, в частности лекарственные и пищевые фитонимы, как отдельная лексико-семантическая группа вызывает огромный интерес в связи со своей малоизученностью. До настоящего времени якутская лексика растительного мира не являлась объектом специального научного исследования в сопоставлении с языком эвенков, проживающих по соседству на территории Якутии. Цель данного исследования - выявление фоноструктурных особенностей якутских наименований лекарственных и пищевых растений в сравнении с эвенкийскими лексемами. Материалом исследования послужили лексикографические источники по якутскому и эвенкийскому языкам, а также языковой материал, собранный нами в ходе полевых работ и экспедиционных исследований в районах Республики Саха (Якутия). В статье использованы сравнительно-сопоставительный, типологический, структурный, описательный и количественно-статистический методы. В ходе анализа было выявлено 25 основ, относящихся к якутско-эвенкийским лексическим параллелям, обозначающих наименования лекарственных и пищевых растений в рамках следующих тематических групп: «хвощ» (2), «боярышник» (4), «кедровый стланик» (2), «ягель / мох» (4), «красная смородина» (2), «осока» (2), «черная смородина» (2), «листвень» (3), «осина» (2), «ревень» (2). Фоноструктурный анализ лексических параллелей якутского языка в сравнительном плане с эвенкийским также позволил выявить устойчивость фоноструктурных оформлений основ; особенности изменений фоноструктурных типов якутских форм в сравнении с эвенкийскими основами; основные причины неустойчивости фоноструктур именных основ эвенкийского языка в якутском языке; соответствия согласных / гласных. The article considers the phonostructural features of the medicinal and edable plants’ names in the Yakut language in comparison with the Evenk lexemes. Since ancient times, plants have been playing an important role in the activities of the indigenous peoples of the north. The lexis of the Yakut plants (medicinal and edable phytonyms), being a separate lexical-semantic group, is of great interest due to its being studied rather poorly. The vocabulary of plants’ names in the Yakut language has not been the object of specific scientific research in a comparative aspect with the Evenk language until now. The purpose of this study is to identify the phonostructural features of the Yakut medicinal and edible plants’ names in comparison with the Evenk lexemes. Lexicographic sources on the Yakut and Even languages, as well as the linguistic material collected in the course of the field work and expeditionary research in the regions of the Republic of Sakha (Yakutia) served as the material for the research. The article employs comparative, typological, structural, descriptive and quantitative-statistical methods. The analysis revealed 25 main lexical stems related to the Yakut-Even lexical parallels, denoting the names of medicinal and edable plants within the following thematic groups: “horsetail” (2), “hawthorn” (4), “dwarf cedar” (2), “reindeer moss/moss” 4), “red currant” (2), “sedge” (2), “black currant” (2), “larch” (3), “aspen” 2), “rhubarb” (2). The phonostructural analysis of the lexical parallels of the Yakut language in comparison with the Evenk language also revealed the stability of the phonostructural designs; peculiarities of the changes in the phonostructural types of the Yakut forms in comparison with the Evenk stems; the main reasons for the stability of the phonostructures of the nominal foundations of the Evenk language in the Yakut language; consonant/vowel correspondence.

Physical and mechanical properties of berries and biological features of red currant growth for mechanized harvesting

The physical and mechanical parameters of berries and the morphometric features of the structure of the bush growth habit are important criteria in predicting the use of berry harvesting equipment. In this research, six red currant cultivars have been studied. The berry separation force, the crushing force, and the strength of attachment of the berries to the stalk were assigned to the physical and mechanical parameters and were determined using the "PLODTEST-1" and "Dina-2" devices (Russia). For the optimal operation of the berry harvester, the crushing force of the berries must be more than 2 N, the berry separation force must be in the range of 0.5–1.5 N. A high correlation between the separation and crushing forces was determined (R = 0.71). During the period of technical maturity, the strength of the attachment of the berries in the raceme was more than 0.5 N and, by the end of maturation, this indicator decreased. Most of the studied cultivars have a compact, optimal bush volume. The red currant cultivars Niva, Asya and Vika are promising for mechanised harvesting.

Chemical and technological assessment of All-Russian Research Institute of Fruit Crop Breeding red currant cultivars for jellification

The jellification capacity of 16 cultivars and 79 selected nurselings of redcurrant from the All-Russian Research Institute of Fruit Crop Breeding collection was studied in order to identify the parental forms that can effectively produce well jellifying hybrids. Material processing and jellification assessment were carried out in compliance with the “Programme and Protocol for Fruit, Berry and Nut Crops Varietal Testing” (Orel, 1999) and GOST R 55462-2013. The assignment of cultivars into well-, medium- and poorly-jellifying categories revealed a declining average gustatory score from the well-jellifying towards the medium- and poorly-jellifying groups, (4.4, 4.3, 4.2 points, respectively), which indicates the significance of the jellification value in gustatory score. The well-jellifying cultivars were: Valentinovka, Podarok Leta and selected nurselings 78-2-100, 80-4-11, 164-22-88, 164-22-97 (4.6 points); Orlovskaya Zvezda, Dar Orla, Orlovchanka and nurselings 618-32-16, 79-1-89, 168-18-73, 84-1-105, 77-1-56, 164-22-41 (4.5 points). The jelly from the fruits of these varieties was characterized by a visually attractive dense jelly without separation (syneresis), as a result of which they can be recommended for obtaining natural pectin-containing products with or without the minimal use of additional gelling agents. Most of the trial cultivars were obtained by breeding of the Rote Shpetleze and Tchulkovskaya cultivars as paternal forms. Among the 46 siblings of the Rote Shpetleze cultivar, 28, 8, and 10 demonstrated good, medium and poor jellification capacities, respectively. Among the 25 siblings of the Tchulkovskaya cultivar, only three demonstrated good jellification, with three having medium jellification and the rest demonstrating poor jellifying capability. The majority of well-jellifying strains were obtained with Rote Shpetleze, which therefore can be recommended as parental material for creating varieties having a high fruit jellification capacity.