scholarly journals Rhythm of Seasonal Development and Minor Life Cycle of Prunella vulgaris L. (Lamiaceae) in Khakasia

2019 ◽  
pp. 1-15
Author(s):  
Vera A. Cheryomushkina ◽  
Irina N. Barsukova
Keyword(s):  
Life Cycle ◽  
Weather Conditions ◽  
Shoot Formation ◽  
Green Plant ◽  
Early Spring ◽  
Shoot Development ◽  
Climatic Conditions ◽  
Seasonal Development ◽  
Prunella Vulgaris ◽  
European Part Of Russia

Seasonal rhythms of plant development are related to plant adaptation to surrounding ecological coenotic and climatic conditions. To discover the patterns of seasonal development of plants in different phytocoenoses, it is essential to observe individual shoots and the entire course of shoot formation. So far the data on the rhythm of seasonal development of Prunella vulgaris L., a plant of the circumboreal region, have been available for the European part of Russia only. We examined the rhythm of seasonal development and minor life cycle of Prunella vulgaris L., the long-rhizome life form, in Siberia (Khakasia) in 2012-2013. Observations were carried out in a forest meadow every 5-7 days in the spring-summer-autumn period and 1-2 times a month in the winter. The development of dicyclic meso-rosetted and winter monocyclic semi-rosetted generative monocarpic shoots was observed using the method by I.G. Serebryakov. It was determined that the differentiation of vegetative and generative spheres in Prunella vulgaris L. shoots in Siberia occurs in early spring within the year of flowering. The species forms spring and autumn leaf generations and phenologically can be described as a summer-winter green plant with a long growing season. The period of shoot development from its initiation to dying the above-ground parts lasts 26 and 14 months in dicyclic meso-rosetted shoots and winter monocyclic semi-rosetted shoots, respectively. In both cases the development of the primordial shoot inside the bud lasts 8 months while the duration of shoot development after emerging from the bud varies. The latter phase lasts 18 months in dicyclic meso-rosetted shoots and only 6 months in winter monocyclic semi-rosetted shoots. Start times and duration of phenological phases (budding, flowering, fruiting and dissemination) are related to the weather conditions in the habitats including fluctuations in air temperature, precipitation patterns and types

The level of manifestation and variation of biometric indicators of spring barley samples of collection of Uman national university of horticulture

2021 ◽  
Vol 1 (98) ◽  
pp. 76-84
Author(s):  
Zh. M. Novak ◽  
Keyword(s):  
Plant Height ◽  
Spring Barley ◽  
Geographic Origin ◽  
Weather Conditions ◽  
Early Spring ◽  
Climatic Conditions ◽  
Spike Length ◽  
Coefficients Of Variation ◽  
National University ◽  
Average Plant

Different weather conditions provide unequal growth and development of plants, in addition, biotypes react differently to changes in external environmental factors. Scientists from Ukraine and other countries analyze varieties and samples of spring barley for the purpose of determine donors of useful traits in different soil and climatic conditions. For the purpose of combine a number of useful traits in one genotype, hybridization between geographically distant biotypes is used. Uman National University of Horticulture has a collection of spring barley samples by different geographic origin. The analyze of breeding material by biometric traits, which will allow us to determine the level of manifestation of each of them in different conditions of 2018–2020 and to determine the donors of useful traits for the further breeding process, was carried out. The weather conditions of the years of research were very different. 2018 was the most unfavorable year for early spring crops. The reason for this was the presence of snow cover until the end of March. After that were strong heat and lack of precipitation. 2019 and 2020 were more favorable for spring barley due to the long cool spring. In addition, in 2020, May and June characterized by increased rainfall. The average plant height of the studied biotypes ranged from 50 to 64 cm. Most samples had the lowest plant height 40–57 cm in 2018, and the highest – in 2020 – from 54 to 88 cm. The average spike length of the analyzed samples was 5.9–8.1 cm. There was not dependence between conditions of the research year and spike length. The number of spikelets per spike was naturally determined by the research conditions. The lowest indicators were observed in 2018 — from 7.0 to 12.0 units, while in 2019 — 16.6–23.9 units, and in 2020 — 20.2–27.7 units. The variation of plant height of the analyzed samples was medium and significant with coefficients from 13.7 to 32.6 %. There was a slight, medium and significant variation of the length of the ear (V = 2.9–23.6 %). The index of number of spikelets per spike most varied — the coefficients of variation were 32.6–55.5 %.

Seasonal Abundance and Population Dynamics of a Bamboo Aphid, Takecallis arundinaria (Homoptera: Aphididae)

1990 ◽  
Vol 25 (4) ◽  
pp. 526-534 ◽  
Author(s):  
Mark A. Coffelt ◽  
Peter B. Schultz
Keyword(s):  
Population Dynamics ◽  
Life Cycle ◽  
Plant Species ◽  
Woody Plant ◽  
Early Spring ◽  
Climatic Conditions ◽  
Seasonal Abundance ◽  
Alternate Host ◽  
Woody Plant Species ◽  
Aphid Populations

The anholocyclic life cycle of the aphid Takecallis arundinaria (Essig) on golden stem bamboo, Phyllostachys aurea (Carrie're) was investigated in 1987 – 1988. Aphid populations peaked from March – May, declined from June – October, and peaked again in December. Aphid population dynamics were strongly influenced by climatic conditions. When aphid populations were at constant or rising levels, significantly more nymphs were found in the southern and eastern quadrants, than in the northern and western quadrants. This directionality may have allowed T. arundinaria populations to be exposed to increased sunlight and decreased winds during the winter and early spring periods. Alate viviparae had a mean fecundity of 147 nymphs and a longevity of 46.5 days. Predators were few and no parasites were found. An alternate host study revealed no aphids on yellow sticky traps placed on nine woody plant species.

ASSESSMENT OF SOYBEAN SELECTION NUMBERS

1970 ◽  
pp. 24-26
Author(s):  
Е. V. Gureeva
Keyword(s):  
Seed Quality ◽  
Weather Conditions ◽  
Vegetation Period ◽  
Climatic Conditions ◽  
High Yield ◽  
Modern World ◽  
Plant Seed ◽  
Oil Crops ◽  
European Part Of Russia ◽  
Seed Growing

In modern world plant growing soybeans are among the most important protein-oil crops and continue to gain popularity among Russian farmers. The total area under soybean in season 17/18 increased to 2.64 million hectares (+ 18% against season 16/17), with an increase of 21% in the European part of Russia, and 1.64 million tons of oilseeds were harvested. To obtain a high yield with good seed quality, it is very important to create very early, highly productive, ecologically adapted varieties for specific soil and climatic conditions. In the conditions of the Institute of Seed Growing and Agrotechnology - the branch of the FBBUU FNAC VIM in 2013-2017. in breeding nurseries an analysis of the variability of quantitative soybean characteristics was carried out. It has been established that such a feature as the duration of the growing season is characterized by weak variability (6.1%). The average variable characteristics include the number of productive nodes on the plant, the mass of seeds from 1 plant and the mass of 1000 seeds. The widest range of variability (27.3-41.8%) is observed in terms of: plant height, number of branches and beans on the plant, seed yield. In our studies, the lowest coefficient of variation (Cv) was found in the George variety - 24.8%. Studies have shown that the yield of seed varieties of varieties over the years ranged from 0.79 to 3.04 t / ha. The evaluation of the soybean breeding material for productivity in different years of research in meteorological conditions showed that the most productive and stable, irrespective of weather conditions, are H 24/11 and H 2/14 varieties with a vegetation period of 102 days.

scholarly journals The phenological observations as the basis for the formation of the database of phenological spectrums of woody plants

2020 ◽  
pp. 77-84
Author(s):  
O. Yu. Emelyanova ◽  
М. F. Tsoy ◽  
L. I. Masalova
Keyword(s):  
North American ◽  
Woody Plants ◽  
Practical Interest ◽  
Weather Conditions ◽  
Growing Season ◽  
Steppe Zone ◽  
Climatic Conditions ◽  
Seasonal Development ◽  
Forest Steppe ◽  
Central Russia

Relevance. A study of the seasonal (phenological) phenomena and natural connections between them on the background of the relevant environmental conditions is of great scientific and practical interest. Knowledge of the dynamics of the seasonal development of woody plants helps in the selection of species and their assessment from an aesthetic and sanitary points of view, as well as in the development and implementation of measures to increase the sustainability of urban green spaces. Materials and methods. The purpose of these studies is to create a database of the dynamics of seasonal development of North American woody plants based on the results of many years of phenological monitoring (2003-2017). The 20 species and forms of North American woody introducers e of the VNIISPK arboretum genetic collection were the objects. Results. It was revealed that the growing season of woody North American plants corresponds to the climatic conditions of the forest-steppe zone of central Russia. The species with the earliest beginning of the growing season (the third decade of March) were distinguished. There were Mahonia pinnata, M. aquifolia, Betula lenta and B. lutea. On the basis of phenological calendars, phenological spectrums have been constructed. These consist of three lines (the development of leaves, shoots, flowers and fruits) with the corresponding color symbols. It has been revealed that phenospectrums vary depending on the conditions of the year. As a result, the database of 20 species and forms of North American woody plants was formed in the form of phenological spectrums against the background of registration of weather conditions in the forest-steppe zone of Russia. The database includes three options for the possible dynamics of the seasonal development of introduced North American plants. The created database allows observing, comparing, evaluating and forecasting changes in the seasonal rhythm of the studied species of introduced North American plants.

scholarly journals Decorative qualities of representatives of Magnoliaceae juss, introduced in the O.V. Fomin botanical garden

2019 ◽  
Vol 77 (1) ◽  
pp. 6-10
Author(s):  
N. Demchenko ◽  
V. Badanina ◽  
O. Futorna ◽  
R. Palagecha ◽  
N. Taran
Keyword(s):  
Botanical Garden ◽  
Early Spring ◽  
Early Summer ◽  
Climatic Conditions ◽  
Ex Situ ◽  
Seasonal Development ◽  
Urban Landscapes ◽  
Physiological Indicators ◽  
Leaf Formation ◽  
Declining Species

The purpose of the work was to find out the features of manifestation of the features of the decorative nature of the species of the Magnoliaceae Juss. on the example of plants from the collection of the O.V. Fomin Botanical Garden of the ESC "Institute of Biology and Medicine" on the climatic conditions of the Kiev metropolis. This article provides detailed study the 12 leaf-declining species of the Magnoliaceae. We studied the complex and seasonal decorativeness, estimated decorativeness, determined the total annual indicator of decorativeness, investigated the seasonal rhythm of plant development on the basis of phenological observations. Basic physiological indicators that were taken into account: budding, opening of flower and vegetative buds, leaf formation, flowering and fruiting. All species that were investigated undergo a full cycle of seasonal development: beautifully bloom, develop and form normally developed fruits and seeds in conditions of ex situ of the Botanical Garden. The species are divided into two groups according to the beginning of the growing season: medium (L. chinense (Hemsl.) Sarg., L. tulipifera L., M. stellata (Siebold & Zucc.) Maxim., M. tripetala L., M. officinalis Rehder & E.H. Wilson, M. denudata Desr., M. liliiflora Desr., M. kobus DC., M. soulangeana Soul.-Bod., M. salicifolia(Sieb. Et Zuss.) Maxim., M. obovata Thunb.) and late (M. biondii Pamp.); into three groups according to the dates of flowering relative to the seasons of the year: early spring (M. stellata, M. denudata, M. salicifolia, M. kobus), late spring and early summer (L. chinense, L. tulipifera, M. tripetala, M. officinalis, M. liliiflora, M. soulangeana, M. obovata), middle summer (M. biondii). The high decorative of studied species (their total annual decorative rate is 4 points) and their high adoptative ability to changes of environmental conditions are concluded. Thus, there is a necessary to extend the using of magnolias in landscaping of urban landscapes as climate forming plants.

Observations on the development and survival of the free-living stages of Oesophagostomum dentatum both in their natural environments out-of-doors and under controlled conditions in the laboratory

Parasitology ◽  
1980 ◽  
Vol 81 (3) ◽  
pp. 507-517 ◽  
Author(s):  
J. H. Rose ◽  
A. J. Small
Keyword(s):  
Weather Conditions ◽  
Early Spring ◽  
Climatic Conditions ◽  
Natural Environments ◽  
Free Living ◽  
Infective Larvae ◽  
Oesophagostomum Dentatum ◽  
Wide Range ◽  
Dry Out ◽  
The Relationship

SUMMARYEggs of Oesophagostomum dentatum in faeces deposited on grass plots from May to October developed into infective larvae. Warm wet weather facilitated development but weather conditions which caused the faeces to dry out rapidly resulted in a heavy mortality of eggs and pre-infective larvae. During the winter no development took place and the eggs died. In the early spring and late autumn a few eggs survived and developed into 1st-stage larvae but they died without developing further. In the laboratory no development took place at 4 °C but at temperatures ranging from 10 to 25 °C development into infective larvae was completed, the rate increasing as the temperature rose. Out-of-doors infective larvae survived in faeces and on herbage for 1 year under a wide range of climatic conditions including the exceptionally cold winter of 1978–79. In the laboratory, infective larvae suspended in water survived even longer at temperatures ranging from 4 to 27 °C. They were rapidly killed by continuous freezing and by desiccation when the relative humidity was less than 90%. The relationship between climatic conditions and the development and survival of the free-living stages is discussed.

scholarly journals Results of experiment with Potentilla anserina L. (Rosaceae Juss.) in Concept "Polycentric Model of Plant"

2020 ◽  
Vol 19 (2) ◽  
pp. 159-167
Author(s):  
S. V. Fedorova
Keyword(s):  
Mineral Nutrition ◽  
Seasonal Changes ◽  
Weather Conditions ◽  
Shoot Formation ◽  
Climatic Conditions ◽  
Climatic Factor ◽  
Potentilla Anserina ◽  
Favorable Weather ◽  
Growth Indicators ◽  
Innovative Concept

The article reviewed the data of an old experiment with Potentilla anserina in planting with a density of1, 5 and 9 ind./ m2, conducted in 1996 under natural climatic conditions on stationary sites. The study was conductedin innovative Concept “Polycentric Mmodel of Plant.” Changes in the growth indicators of the polycentric system ofthe plant from June to October were revealed in connection with seasonal changes in the climatic factor. This is thesum of the temperatures and the amount of precipitation between the periods of control observations of the plant. Themost favorable weather conditions for the formation of shoot-formation centers, mineral-nutrition centers and generationcenters as elements of Polycentric Model of Plant are determined. The maximum number of stolons, shoot-formationcenters, mineral-nutrition centers, and generation centers has been determined that can actively function on an area of 4square meters in plantings of different densities.

scholarly journals Seasonal rhythm of growth and development of new cultivars of highbush blueberry (Vaccinium corymbosum L.) introduced into the Belarusian Polesie

2018 ◽  
Vol 63 (4) ◽  
pp. 472-485
Author(s):  
O. V. Drozd
Keyword(s):  
Growth And Development ◽  
Weather Conditions ◽  
Vaccinium Corymbosum ◽  
Climatic Conditions ◽  
Seasonal Development ◽  
Highbush Blueberry ◽  
Lowbush Blueberry ◽  
Phases Of Development ◽  
Early Phases ◽  
Phenological Phases

Based on the data of seven-year observations of the rhythms of seasonal growth and development, the features of the passage of the phases of phenological development of 15 cultivars of highbush blueberry and 1 cultivar of lowbush blueberry have been presented in the article. The rhythmic plasticity of the blueberry cultivars introduced in Belarus appeared in the ability to change phenorhythmics by the reason of different weather conditions during the years of observation. It was reflected in the variation of dates of the main phenological phases onset. At the same time, inter-branch differences in the early phases of development (vegetative) were insignificant, they became much more pronounced in terms of the passage of the phenological phases associated with the development of the generative sphere of the highbush blueberry. The investigated blueberry cultivars under the conditions of the introduction point retain their inherent order of fruit ripening, characteristic of their homeland.The climatic conditions of the Belarusian Polesie ensure the passage of a full cycle of seasonal development by the investigated highbush blueberry of the entire spectrum of ripening of the crop. At the same time, inter-branch differences in the duration of the growing season are insignificant. The obtained results testify to the prospects of the investigated blueberry cultivars of different maturation periods for homestead and industrial gardening in the Belarusian Polesie and determine the expediency of carrying out further introductory research.

PERSONALIZED APPROACH TO THE ORGANIZATION OF MEDICAL CARE FOR PATIENTS WITH WEATHER DEPENDENCE

2020 ◽  
pp. 35-39
Author(s):  
Klepikov O.V. ◽  
Kolyagina N.M. ◽  
Berezhnova T.A. ◽  
Kulintsova Ya.V.
Keyword(s):  
Medical Care ◽  
Cardiovascular System ◽  
Performance Indicators ◽  
Weather Conditions ◽  
Climatic Conditions ◽  
Outpatient Clinics ◽  
Vulnerable Groups ◽  
Pathological Effect ◽  
Weather Forecasts ◽  
Personalized Approach

Relevance. Today, in preventive medicine, climatic conditions that have a pathological effect on the functional state of a person are increasingly being updated. the occurrence of exacerbations of many diseases can be causally associated with various weather conditions. Aim: to develop the main tasks for improving the organization of medical care for weather-dependent patients with diseases of the cardiovascular system. Material and methods. The assessment of personnel, material and technical support and the main performance indicators of an outpatient clinic was carried out on the example of the Voronezh city polyclinic No. 18 to develop the main tasks for improving the organization of medical care for weather-dependent patients with diseases of the cardiovascular system. Results. The main personnel problem is the low staffing of district therapists and specialists of a narrow service. One of the priorities for reducing the burden on medical hospitals is the organization of inpatient replacement medical care on the basis of outpatient clinics. The indicators for the implementation of state guarantees for the outpatient network for 2018, which were fully implemented, are given. The analysis of the planned load performance by polyclinic specialists is presented. Cardiological and neurological services carry out measures to reduce the risk of exacerbations of diseases with cerebral atherosclerosis, hypertension, and major neurological nosologies. Conclusion. Improving the organization of medical care for weather-dependent patients with cardiovascular diseases are: informing patients about the sources of specialized medical weather forecasts in the region, organizing the work of the medical prevention office, implementing an interdepartmental approach to providing health care to the most vulnerable groups of the population.

Influence of meteorological factors on potato yield in the conditions of the Right-Bank Forest-steppe

2018 ◽  
Vol 1 (94) ◽  
pp. 55-61
Author(s):  
R.O. Myalkovsky
Keyword(s):  
Meteorological Factors ◽  
Weather Conditions ◽  
Climatic Conditions ◽  
Potato Yield ◽  
High Yield ◽  
Forest Steppe ◽  
Potato Tubers ◽  
Middle Aged ◽  
Lower Yield ◽  
The Right

Goal. The purpose of the research was to determine the influence of meteorological factors on potato yield in the conditions of the Right Bank Forest-steppe of Ukraine. Methods.Field, analytical and statistical. Results.It was established that among the mid-range varieties Divo stands out with a yield of 42.3 t/ha, Malin white – 39.8 t/ha, and Legend – 37.1 t/ ha. The most favourable weather and climatic conditions for the production of potato tubers were for the Divo 2011 variety with a yield of 45.9 t/ha and 2013 – 45.1 t/ha. For the Legenda variety 2016, the yield of potato tubers is 40.6 t/ha and 2017 – 43.2 t/ha. Malin White 2013 is 41.4 t/ha and 2017 42.1 t/ha. The average varieties of potatoes showed a slightly lower yield on average over the years of research. However, among the varieties is allocated Nadiyna – 40.3 t/ha, Slovyanka – 37.2 t/ ha and Vera 33.8 t/ha. Among the years, the most high-yielding for the Vera variety was 2016 with a yield of 36.6 t/ha and 2017 year – 37.8 t/ha. Varieties Slovyanka and Nadiyna 2011 and 2012 with yields of 42.6 and 44.3 t/ha and 46.5 and 45.3 t/ha, respectively. Characterizing the yield of potato tubers of medium-late varieties over the years of research, there was a decrease in this indicator compared with medium-early and middle-aged varieties. However, the high yield of the varieties of Dar is allocated – 40.0 t/ha, Alladin – 33.6 t/ha and Oxamit 31.3 t/ha. Among the years, the most favourable ones were: for Oxamit and Alladin – 2011 – 33.5 and 36.5 t/ha, and 2017 – 34.1 and 36.4 t/ha, respectively. Favourable years for harvesting varieties were 2011 and 2012 with yields of 45.7 and 45.8 t/ha. Thus, the highest yield of potato tubers on average over the years of studies of medium-early varieties of 41.2-43.3 t / ha were provided by weather conditions of 2011 and 2017 years, medium-ripe varieties 41.0-41.1 - 2012 and 2011, medium- late 37,6-38,5 t / ha - 2012 and 2011, respectively.

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