03.00.00 Biological sciences
-
FEATURES OF REGENERATIVE ABILITY IN CUTTINGS OF TECHNICAL VARIETIES OF BIANCO, VIORICA AND RITON
DescriptionThe article presents the results of three years of studies on regenerative processes in technical white one-bud cuttings of resistant varieties of grapes Bianca, Viorica and Riton. The studies were conducted in greenhouse experiments at the Department of Viticulture of Kuban State Agrarian University. It was found, that the cuttings of Viorica varieties had achieved the best ripening, and the worst was Bianca. Varieties of Viorica and Ryton which have rather good level of ripening of the cuttings, had starch in carbohydrates and Bianca variety had sugar. Earlier blooming of buds characterized the cuttings of Ryton. Blooming of the buds of Bianca somewhat delayed. Maximum length of the shoots characterized the cuttings of Bianca, and the lowest – Viorica. The shortest pre-root period (26.3 days) was observed in Ryton, and the longest (29.3 days) – in Bianca. Viorica was characterized by the highest yield of cuttings with 3 roots and more (81.3%), this indicator was a bit less (72.5%) for Ryton. For Bianca it was minimal and it was 26.3%. A similar pattern was observed for the average number of cuttings formed at the roots: the variety Viorica - 9.4 pc.,Ryton - 8.1 pc. and Bianca - 4.3 pc. Thus, cuttings of the varieties of Viorica and Ryton belong to a group with a very high root growing activity and Bianca has an average activity
-
Description
The article presents the results of three years of researches conducted at the Department of Viticulture of Kuban State Agrarian University, to study the processes of shoots and rooting of the three-bud cuttings of grapes of Pervenets Magaracha, Podarok Magaracha and Cytrony Magaracha of the selection of Magarach Institute of Grape and Wine. The area of these varieties, which are inter-specific hybrids, in the Krasnodar region is more than 2 thousands hectares. The cuttings were rooted in sawdust in a greenhouse on a heated rack. It was found, that the regenerative capacity of cuttings was strongly dependent on the method of their storage prior to installation on the germination. The best results were obtained in the case when cuttings had been stored in the refrigerator before starting the experiment. The lowest impact of the way to store cuttings was on the percentage of cuttings with blossoming eyes, and the largest - the length of the shoots, the output of the cuttings with at least 3 of the roots, and the average number of roots developed on one cutting. Rooting of cuttings and their growth with three and more roots were different over the years for the varieties of Pervenets Magaracha and Cytrony Magaracha, in favor of one sort or another, but the average 3-year difference between varieties was not significant. On average, in two or three years, the maximum number of roots appeared in the variety of Cytrony Magaracha, which was a bit ahead of Pervenets Magaracha. The difference in the number of cuttings formed at the roots was authentic. Correlation analysis showed that the closest relationship to the performance of the rooting ability of cuttings was found in the length of the shoots. The level and the nature of the identified correlations suggests that the rooting ability of the cuttings of the varieties of Pervenets Magaracha was determined primarily by hormonal activity, Podarok Magaracha by its supply of plastic substances, and Cytrony Magaracha had equally both factors
-
FEATURES OF DEVELOPMENT OF NATURAL SISTEMS AND AGRICULTURAL LANDSCAPES OF THE WESTERN AZOV
DescriptionWe know, that in the development of the natural ecosystems of the Western Priazovye its biomass predominates. This ensures the maximum protection from noticeable changes of habitat. Basic succession defining a significant shift of energy flow in the direction to increase of their expenditures to maintain forming populations determined by broad specialization of natural systems on ecological niches, and their individuals have rather small size, the life cycles of many of them are very simple and short. The coastal strip of the Azov Sea has been seriously degraded due to powerful recreational load, especially in the summer. Presumably one should expect an increased anthropogenic load on ecosystems of this area. Quite obvious is a regularity of overload agroecosystem which occupies the territory between the river and other water formations. The relatively low productivity of agricultural systems of the Eastern Azov is limited by number of factors, among which the main place is occupied with the moisture, nutrients and high weediness of sown areas
-
HELIANTHEMUM DAGHESTANICUM RUPR. PECULIARITIES OF ITS DISTRIBUTION AND PHYTOCENOTIC PLACEMENT
DescriptionIn the given work there is information about peculiarities of distribution and phytocenotic placement of the endemic of Dagestan flora Helianthemum daghestanicum Rupr. Twenty five locations of the species are detected and four of them are new ones. Altitude levels of its spreading are defined more accurately – 350 – 1750 m. It is notified that basic types of vegetation, where Sunrose Dagestanian can be met, are communities of mountainous xerophytes and mountain steppes with domination of Botriochloa ischaemum and Salvia canescens
-
Description
The analysis of change of oak participation as a part of planting depending on directions of a slope, forest stand height along a slope (top, average, bottom) and cutslope ratio (5 – 15º and 25 – 35º) on time length bor 25 years is carried out. Oak durmast and english oak serai changes directions are revealed on the Western Caucasus
-
Description
The soil properties out of playing areas of golf courses (so-called roughs) have an influence on the lawn vegetation state. Heavy texture of the soil has the cause of deterioration of the water-air properties of soil which is accompanied by changes in the nature of addition grass lawn from solid to mosaic. Non-aggressive grass of the artificial lawn has one of the reasons for renewal of native flora and the formation of a new type of plant association, closer to the natural vegetation of the Don floodplain
-
Description
The article presents data on the growth of an assimilation apparatus of Scots pine, silver birch and pedunculate oak in the conditions of the Lipetsk industrial center. It is established that the growth dynamics of annual and biennial needles of Scots pine under pollution is higher compared to the control, while absolute values of length and mass of needles less. Starting from the second year, in the conditions of contamination noted stunted pine needle growth, which increases by the third year. It is shown that the linear dimensions of the lamina of birch in the conditions of pollution are not changing much compared to the control, whereas the linear dimensions of the lamina of pedunculate oak in the conditions of pollution is less than the control
-
FEATURES OF THE EVOLUTIONARY DEVEL-OPMENT OF LIFE FORMS OF HIGHER PLANTS
DescriptionClimatic cycles associated with global phases of create gasses are the reasons of oscillation ecosystems and their constituent. Ecological capacitance of systems increases or decreases due to the appearance of new ecological niches, which creating favorable conditions for expanding or narrowing opportunities of adapting new types of organization of living organisms and their significant changes. Conjugacy of the biological evolution of living organisms with geological crises and periodic variations in solar activity is observed. Direction in the development of plant life forms since the beginning of their occurrence was quite varied. The most deeply the development of life forms was developed for flowering plants, starting from of different groups of gymnosperms. The main reasons for selection of life forms are due to challenges facing researchers
-
SELECTION OF PERSPECTIVE BIOLOGICAL CONTROL AGENTS FOR FALL WHEAT PROTECTION FROM FUSARIUM DISEASES
DescriptionThe results of primary screening of bacterial strains on the basis of cell-wall degrading enzymes and antifungal activity against the fungus Fusarium graminearum. Selected active strains perspective for the development of biopreparations based on their type of multifunctional action to protect fall wheat from Fusarium pathogens are given
-
ESTIMATION OF ACTINIDIA DELICIOSA CULTIVARS (KIWI) ADAPTIVE POTENTIAL IN RUSSIAN SUBTROPICS
DescriptionThe influence of climate factors on adaptiveness of Actinidia deliciosa strange cultivars is ascertained in damp subtropics of Russia. The basic limiting factor of its cultivation is precipitation quantity during flowering phase and fetal maturity