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MAIN PAGE > Journal "Agriculture" > Rubric "Biological Resources"
Biological Resources
Sukhareva L.V., Mukhametova S.V., Veselova K.A. - Seasonal development of Philadelphus cultivars in the Mari El Republic pp. 1-7


Abstract: Species of the genus Philadelphus L. (mock orange) are among the most popular ornamental shrubs. They are valued for low maintenance, abundant flowering, exceptional aroma of flowers and a prolonged flowering period during high summer, by when many shrubs already fade. The results of phenological observations of 2018-2020 are presented in the article. The objects of the research were the plants of 8 cultivars of mock orange selected by N. K. Vekhov in the Botanical Garden-Institute of VSUT (Yoshkar-Ola, Mari El Republic). The vegetation of plants lasts from the beginning of May to the end of September and has a duration of 177-189 days.  The 'Airborne force' (Vozdushny desant) cultivar was characterized by the longest growing season.  The full leafing occurred in the first decade of June, the growth of scions ended in the first half of August. Flowering began in the third decade of June and lasted on average for 13-28 days. The cultivar 'Vosdushny Desant' has the earliest beginning of flowering, 'Arktika' has the latest one. The plants of 'Elbrus' were characterized by the longest flowering, 'Yunnat' – by the shortest one. There was no connection between the duration of flowering and the structure of flowers.
Sukhareva L.V., Mukhametova S.V., Zhelonkina T.Y. - Phenology of Pentaphylloides representatives in the Mari El Republic pp. 25-34


Abstract: Representatives of the genus Pentaphylloides are low ornamental shrubs that are valued for long abundant flowering, compact size and unpretentiousness to growing conditions. P. fruticosa is a valuable plant that has not only decorative value, but also food, medicinal, soil protection. For medicinal purposes, young flowering shoots are used, harvested during budding and flowering. The article presents the results of phenological observations in 2018-2020. The objects of the study were plants of 8 kinds of Pentaphylloides in the collection of the Botanical Garden-Institute of Volga State University of Technology (Yoshkar-Ola, Mari El Republic). The studied plants undergo most phases of seasonal development, with the exception of the mass end of shoot growth, complete lignification of shoots, mass ripening of fruits, mass leaf fall. Species and cultivars vegetated from the end of April – the beginning of May to the end of October in a short time. The vegetation period was 177-182 days. There was no significant difference in the timing of the passage of phenophases between the taxa. Plants of Р. × friedrichsenii and P. mandschurica passed most of the phenophases earlier than the average dates for the genus, and 'Goldfinger' and 'Klondike' – later. The earliest and longest flowering was characterized by P. friedrichsenii (65 d.), the latest and shortest – P. fruticosa (28 d.). All plants of P. fruticosa cultivars bloomed for a longer period than the species. After mass flowering, single flowers were observed in representatives of Pentaphyloides until mid-October.
Mukhametova S.V., Konakova A.V., Sokolova K.I., Suchkova A.A. - Phenology of North American maple trees in the conditions of the Mari El Republic
pp. 31-42


Abstract: The article contains the results of the 2014 - 2018 phenology observation over 6 maple tree species (Acer L.) with natural habitats in North America. The objects of research were plants of the Botanical garden-Institute of VSUT: A. negundo, A. pensylvanicum, A. rubrum, A. saccharinum, A. saccharum, A. spicatum. The studied maples began growing at the end of April – the first decade of May and ended in October. The first, in the first decade of May, bloomed A. saccharinum and A. rubrum. Later blooming species were characterized by a longer flowering period, the latest and longest flowering within 20 days was observed in A. spicatum. Despite the different periods of flowering, the fruits of different species ripened relatively amicably, in the second half of September. The longest vegetation period was found in A. saccharinum (169±2.1 days), and this species is characterized by late autumn leaf blooming. The greatest period of autumn leaf blooming, more than a month, was characterized by A. spicatum. The studied species can be used in landscaping of the Mari El Republic settlements as part of an additional assortment, with the exception of A. negundo, which is a weed plant. Despite the similar timing of the passage of many phenophases, the variety of maples morphological features (shape and size of leaves, flowers and fruits, bark color, etc.) allows them to be used for decorative purposes. During the study period, the earliest passage of most phenophases was recorded in 2016, and the latest in 2017 and 2018.
Mukhametova S.V., Novgorodskaya N.O., Anisimova S.V. - Seasonal development of European maples in the Republic of Mari El pp. 33-41


Abstract: The article contains the results of observations over 5 maple (Acer L.) species conducted in 2014 - 2018. The research objects are the plants growing in the Botanic garden of the Volga region State University of Technology: A. campestre, A. platanoides, A. pseudoplatanus, A. tataricum, A. trautvetteri. Their natural habitats are in the Caucasian-European region. In the wild, only A. platanoides grow on the territory of the Republic, others are introduced species. The authors analyze weather conditions over 5 years of research and establish that at higher average daily temperatures in 2016, the seasonal development stages came earlier, while colder weather conditions of 2017 hampered the phenophase. On average, the maples under study started vegetation in the first decade of May, and finished it in the third decade of September - mid October. The earlier vegetation started, the earlier sprouts started growing and flowering began. The easiest flowering was registered for A. platanoides in the second decade of May, then for A. campestre in the third decade of May. The latest and the longest flowering was registered for A. tataricum. Long-vegetating species were characterized by long growing of sprouts and late fall of leaves. In the autumn period, A. campestre and A. tataricum are the fanciest with a long period of leaves coloring.  A. pseudoplatanus and A. trautvetteri don’t have a phase of generative development due to poor winter resistance, and are not recommended for use in landscaping.  
Lavrent'ev B.F. - Bee-keeping development in the Republic of Marij El pp. 44-51


Abstract: The main task of this project is the creation of a reliable, highly effective, affordable high performance system of bee venom collection in order to provide the Russian pharmaceutical industry with raw products for the purposes of import substitution. Another its goal is to develop methodological documents for the comprehensive study of the process of bee venom collection during the season of 2017. The research task of the project is to find out the dependency of the amount of the collected venom on the method of bees disturbing, season, time of day, weather conditions, modes of a bee venom collector, duration of collection, state of a bee colony and other factors. The research is performed using the instruments, which have been designed in Volga State University of Technology and received 8 patents of the Russian Federation.Within the project, significant attention will be given to the improvement of the quality of bee venom and to its certification in order to organize the production of venom-based medicines at Yoshkar-Ola pharmaceutical plant. The research is based on the methods of observation, comparison and experimental research at bee yards of the Republic of Marij El. Biological researches are conducted in the field and in the laboratory. All the acquired results are subject to qualitative and quantitative analysis. It is planned to perform comprehensive research in order to define the vitality and productivity of bee colonies in terms of the method of bees disturbing, season, time of day, weather conditions, modes of a bee venom collector, duration of venom collection, state of a bee colony and other factors. A significant feature of the bee venom collector is the automatic program change mode depending on the parameters of the environment. This mode helps avoid bees’ adaptation to the disturbing factors and to raise the effectiveness of venom collection. The output buses of the device are protected from short-circuits in wire lines and venom receivers; it guarantees their reliability and improves their effectiveness. Using the system of bee venom collection, it is possible to cover the expenses for the development and production of devices and the expenditures of regional producers on venom collection, including the groups of venom collectors. The last-mentioned factor is very important, because it can reduce the price for honey by 35-40% and improve the competitive performance of bee-keeping on the global market. Besides, it could create the basis, which would provide the Russian pharmaceutical industry with raw materials for import substitution. 
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