scholarly journals Reproductive capabilities of representatives of the genus Hosta Tratt. when introduced in the forest-steppe zone of Western Siberia

2021 ◽  
pp. 58-68
Author(s):  
L. L. Sedelnikova ◽  
Keyword(s):  
Western Siberia ◽  
Reproductive Potential ◽  
Pollen Grains ◽  
Weather Conditions ◽  
Steppe Zone ◽  
Seed Morphology ◽  
Forest Steppe ◽  
Seed Productivity ◽  
High Viability ◽  
First Time

In the forest-steppe zone of Western Siberia, a comparative study of seed productivity, flowering features, fruit and seed morphology, pollen fertilization ability was conducted for the first time in representatives of the Hosta Tratt genus: H. decorata, H. sieboldiana, H. lancifolia, H. albomarginata, H. crispula, H. kikutii, H. montana, H. rectifolia, H. undulata and varieties Golden Tiara, Night before Christmas, and Stiletto. It is noted that the reproductive potential and fertility of pollen in 9 species and 3 varieties of host have intraspecific and varietal specificity and are associated with seasonal weather conditions. The results of free pollination of the host were studied. It was found that fruit formation within a single generative shoot is heterogeneous, with the exception of the species H. decorata. The coefficient of productivity of species is 16—93%, varieties 12.5—36.4%. Morphometric indicators of length of generative shoots, fruits and seeds are presented. It is shown that the fruit is a freely opening loculicidal tricuspid capsule. Seeds are linear to oval in shape. It was revealed that with high viability of pollen grains (46—82.6%) in H. albomarginata, H. rectifolia, H. sieboldiana, the productivity coefficient is 2—3.8 times lower than in H. decorata. The flowers are characterized by geitonogamy with the phenomenon of peterandre, chasmogamous pollination and flowering in acropetal direction. H. decorata has a high adaptive advantage of seed productivity. The studied species and varieties consistently pass all the phenophases of development and are characterized by vitality. The growing season from spring growth to fruiting in Novosibirsk is 98—112 days. The reproductive capabilities of the host during introduction in the forest-steppe zone of Western Siberia are realized partly due to seed reproduction and are distinguished by species and variability.

scholarly journals Specialized pollinators and seed production of Trollius species introduced in Western Siberia

2018 ◽  
Vol 11 ◽  
pp. 00018
Author(s):  
Anastasiya Gusar ◽  
Lubov Buglova
Keyword(s):  
Seed Production ◽  
Larval Stage ◽  
Western Siberia ◽  
West Siberia ◽  
Steppe Zone ◽  
Forest Steppe ◽  
Seed Productivity ◽  
Production Increase

In five species of Trollius L., seed production of fruits was studied, plants being grown in culture in the forest steppe zone in Western Siberia. 2 species representing Chiastocheta genus were identified as specialized pollinators (Diptera, Anthomyiidae). Those insects pollinate the flowers and damage the seeds of three globeflower species: T. apertus, T. europaeus T. asiaticus. The flower season of other two species (T. chinensis and T. ledebourii) starts later and the plants can’t be exposed to invasion, as Chiastocheta flies are at their larval stage yet. Pollination of these species is performed by non-specialized agents. The lowest rate of seed production realization of about 20% is registered in T. europaeus, while in T. ledebourii it is the highest comprising 71%. We consider the flies of Chiastocheta genus as an important part of the complex of factors lowering seed productivity in Trollius and their relationship as parasitism. Thus, in West Siberia for Trollius seed production increase, measures intended to reduce Chiastocheta abundance will be useful.

scholarly journals Rhizomatous geophytes from the genus Hosta in Western Siberia

2021 ◽  
Vol 38 ◽  
pp. 00110
Author(s):  
Lyudmila Sedelnikova
Keyword(s):  
Comparative Analysis ◽  
Cross Section ◽  
Growth And Development ◽  
Western Siberia ◽  
Steppe Zone ◽  
Forest Steppe ◽  
Lower Epidermis ◽  
Seed Productivity ◽  
Is Research ◽  
Biological Features

This is research of biological features of the growth and development rhythm of 11 Hosta species in the conditions of forest-steppe zone of Western Siberia. A comparative analysis of the organogenesis of the species H. decorata, H. sieboldiana, and H. lancifolia is carried out. The seed productivity and viability of pollen of 9 species were established. It is provided the description of upper and lower epidermis, cross section of leaf. It is revealed that the structure of lamina is characterized by xeromesophytic characters. It is mentioned species specificity in arrangement of adaxial and abaxial stomas pursuant thereto leaves of two types of Hosta are amphistomatic and hypostomatic. It is concluded that on the lower epidermis of the leaf, the transpiration capacity is 3 – 8 times greater.

scholarly journals Ontomorphogenesis of some species of Hemerocallis genus in the conditions of the forest-steppe zone of the Novosibirsk region

2021 ◽  
Vol 31 ◽  
pp. 00025
Author(s):  
Lyudmila Sedelnikova
Keyword(s):  
Western Siberia ◽  
Vegetative Reproduction ◽  
Pollen Grains ◽  
Growth Period ◽  
Steppe Zone ◽  
Ex Situ ◽  
Forest Steppe ◽  
Biological Features ◽  
Novosibirsk Region ◽  
Generative Organs

Morpho-biological features of the development of 5 species of the genus Hemerocallis in the conditions of the forest-steppe zone of Western Siberia are studied. The results of ontomorphogenesis are presented. 8 ontogenetic states are described. It is noted that the pregenerative period of ontogenesis lasts 2 years. The generative period of ontogenesis occurs at 3 years in plants developed from seeds. The species specificity in the formation of generative organs in autumn (H. minor, H. citrina, H. lilio-asphodelus) and the spring growth period (H. fulva) was establish. A palynomorphological analysis of pollen grains of 4 species (H. citrina, H. minor, H. middendorfii, H. fulva) was carried out. The implicitly polycentric type of biomorph is determined. Complete morphological disintegration is characteristic of underground organs. The possibility of ex situ conservation of species by seed and vegetative reproduction is noted.

scholarly journals Comparative organogenesis of the species of the genus Hosta Tratt

2020 ◽  
pp. 147-153
Author(s):  
L. L. Sedelnikova
Keyword(s):  
Comparative Analysis ◽  
Growth Cone ◽  
Western Siberia ◽  
Steppe Zone ◽  
Winter Period ◽  
Forest Steppe ◽  
Forming Process ◽  
Beginning Of Flowering ◽  
First Time ◽  
Generative Organs

For the first time, a comparative analysis of organogenesis in Hosta species - H. decorate, H. sieboldiana, and H. lancifolia in the forest-steppe zone of Western Siberia was performed. It was found that the intrarenal formation of generative organs in these species is laid during the growth of monocarpic shoot in May- June. Differentiation of the growth cone of the renewal shoot occurs synchronously from stages III to VIII of organogenesis for 56-91 days. In the early-flowering species H. decorate, the organ-forming process occurs 25 - 27 days faster than in the late-flowering H. lancifolia. Generative organs in the rudimentary inflorescence are formed acropetally. Stages of organogenesis from IX to XII correspond to phenophases from the beginning of flowering to fruiting. In the pre-winter period, the cone of growth of the renewal shoot in all species is at the II stage of organogenesis, with 4 to 6 leaf metamers embedded in its basal part.

“FLAGMAN” - NEW VARIETY OF BROMUS INERMIS

1970 ◽  
pp. 17-19
Author(s):  
N. I. Kashevarov ◽  
R. I. Polyudina ◽  
I. N. Kazarinova ◽  
D. А. Potapov
Keyword(s):  
Dry Matter ◽  
Western Siberia ◽  
Steppe Zone ◽  
Forest Steppe ◽  
Mass Selection ◽  
New Variety ◽  
Fodder Crops ◽  
Experimental Base ◽  
Siberian Research Institute ◽  
Academy Of Sciences

A new cultivar of smooth bromegrass (Bromopsis inermis Leyss) Flagman was developed by methods of mass selection and polycross. Breeding and wild forms of various ecological and geographical origins are used as an initial material. The authors of the cultivar: Kazarinova I.N., Polyudina R.I., Straub A.A., Gomasco S.K. Studies were conducted on the Central experimental base of the Siberian research Institute of fodder crops of the Siberian Federal Scientific Centre of Agro-BioTechnologies of the Russian Academy of Sciences, located in the forest-steppe zone of Western Siberia (Novosibirsk region, Novosibirsk district, Krasnoobsk). The cultivar is mid-ripening: the period from the beginning of spring aftergrowing to mowing ripeness is 63-75 days and to full maturing of seeds is 95-111 days. The yield of dry matter is 8.3 t/ha, which exceeds the standard by 8%, seed yield - 0.62 t/ha, higher than the standard by 28%. The dry matter yield of the cultivar Flagman for the fourth year of use exceeded the standard by 23% and reached to 11.4 t/ha. The 1000 seeds weight is 3.0-3.4 g. The plant height is 90-140 cm. Tilling capacity is up to 40 stems per tuft. Foliage varies from 32 to 50% depending on the age of the grass and environment conditions. The resistance of the cultivar to brown rust and helminthosporiosis is higher than of the standard. The copyright certificate No. 71916 and patent No. 9653 were received.

Archaeological Materials of Eneolithic Settlements in Forest-Steppe Zone of the Volga Region: A Source for Diet and Chronology

Radiocarbon ◽  
2018 ◽  
Vol 60 (5) ◽  
pp. 1587-1596
Author(s):  
A Korolev ◽  
M Kulkova M ◽  
V Platonov ◽  
N Roslyakova ◽  
A Shalapinin ◽  
...  
Keyword(s):  
Geographical Area ◽  
Steppe Zone ◽  
Volga Region ◽  
Forest Steppe ◽  
Domestic Species ◽  
Animal Bones ◽  
Archaeological Materials ◽  
Settlement Site ◽  
First Time ◽  
Comprehensive Studies

ABSTRACTThe study the diet of Eneolithic populations is of great interest to archaeologists. However, the studies undertaken in the steppe and forest-steppe zones of Volga region in Russia have left many issues unsolved. Data collected recently through the comprehensive studies of Lebyazhinka VI settlement enable us to change this situation. Of particular importance at this settlement site is good preservation of animal bones, bone fishing tools, and ceramics of the same type with food crusts and connected to a large house pit. For the first time in this geographical area, bones of domestic animals were found in the fill of a dwelling. The aim of this paper is to present the results obtained through comprehensive studies of diet and economy in the Eneolithic based on the materials from Lebyazhinka III and Lebyazhinka VI settlement sites. The main results of the archaeozoological analysis— determinations of species, age and size of the animals—provide the necessary data for studying the diet. We conclude that there are differences between Lebyazhinka III and Lebyazhinka VI settlements. Lebyazhinka III settlement included bones of only wild species, however, Lebyazhinka VI settlement consists of wild and domestic species.

scholarly journals Influence of the growth regulator “Regoplant” and microfertilizer “Ultramag Kombi” on photosynthetic activity of potatoes in the forest-steppe zone Republic of North Ossetia-Alania

2021 ◽  
Vol 210 (07) ◽  
pp. 55-65
Author(s):  
Larisa Ikoeva ◽  
Oksana Haeva
Keyword(s):  
Growth Regulator ◽  
Field Experiments ◽  
Photosynthetic Activity ◽  
Low Cost ◽  
Weather Conditions ◽  
Steppe Zone ◽  
Practical Significance ◽  
Forest Steppe ◽  
Photosynthetic Productivity ◽  
North Ossetia

Abstract. The purpose of the work is to study the influence of the growth regulator “Regoplant” and microfertilizer “Ultramag Kombi” on the photosynthetic productivity of the potatoes of the Barna variety based on the results of field experiments in the forest-steppe zone Republic of North Ossetia-Alania. Methods. Studies on the tasks were carried out in 2018–2020. at the experimental site of the NCRIMFA branch of the VSC of RAS in the conditions of the forest-steppe zone Republic of North Ossetia-Alania according to generally accepted methods. The soil of the experimental plot is medium-power heavy loamy leached chernozem, lined with pebbles. Results. It is established, that biological products under identical soil and weather conditions assisted different progress of plants and approach of phases of vegetation. For all variants of the experiment, the number of stems increased by 0,3–0,7 pcs., the height of the stems of potato plants – by 3,8–4,9 cm in comparison with the control. An intense increase in the mass of tops occurred when using a tank mixture (growth regulator “Regoplant” (25 ml/ha) + microfertilizer “Ultramag Combi” (0,75 l/ha)) – by 74 g/bush, or 15.5 % compared with the control variant. During the growing season, the sum of the photosynthetic potential (FP) was 1,070 thousand m2 •days/ha in the control, and on average 1198–1406 thousand m2•days/ha in the experimental variants. The greatest accumulation of dry matter was noted when using a tank mixture – 917 g/m2. The maximum pure photosynthetic productivity was observed in experimental variant IV – 6,52 g/m2•day compared to the control option. Scientific novelty. For the first time in the forest-steppe zone Republic of North Ossetia-Alania the effect of the growth regulator “Regoplant” and microfertilizer “Ultramag Kombi” on photosynthetic activity of potatoes was studied. Practical significance. The studies carried out make it possible to recommend in potato production the use of a tank mixture of an effective growth regulator “Regoplant” at a dose of 25 ml/ha and microfertilizer “Ultramag Combi” at a dose of 0,75 l/ha, as an ecologically safe and low-cost agricultural method when processing vegetative plants, providing an increase in yield and quality of tubers.

scholarly journals Flowers of Campanula species as a source of biologically active substances

2021 ◽  
Vol 38 ◽  
pp. 00033
Author(s):  
Tatiana Fomina ◽  
Tatiana Kukushkina
Keyword(s):  
Ascorbic Acid ◽  
Western Siberia ◽  
Food Additives ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Raw Material ◽  
Forest Steppe ◽  
Wet Weight ◽  
First Time ◽  
Active Substances

The content of the major groups of biologically active substances in flowers of 7 Campanula species, cultivated in the forest-steppe of Western Siberia, were investigated for the first time. Freshly collected flowers were found to contain 0.06-0.15 % of catechins, 0.31-3.17 % of flavonols, 3.31-6.47 % of tannins, 3.10-15.57 % of pectic substances, and 0.66-16.4 mg% of carotenoids calculated per absolute dre weight of raw material. The amount of ascorbic acid was 36.9-114.0 mg% per wet weight. The data indicate that Campanula flowers are promising for the production of phenolic compounds, the development of food additives and fresh consumptions a seasoning.

scholarly journals The influence of mineral fertilizers on the mass of plant-root residues of grain crops on chernozem soils of the Western Siberia

2021 ◽  
Vol 36 ◽  
pp. 03007
Author(s):  
D.V. Eremina
Keyword(s):  
Spring Wheat ◽  
Mineral Nutrition ◽  
Western Siberia ◽  
Plant Root ◽  
Steppe Zone ◽  
Soil Science ◽  
Mineral Fertilizers ◽  
Forest Steppe ◽  
Grain Crops ◽  
Chernozem Soils

The influence of various levels of mineral nutrition on the accumulation of plant-root residues of spring wheat and oats in the conditions of the forest-steppe zone of Western Siberia is studied. The natural agricultural background of leached chernozem was taken as a control. The research was carried out at the station of the Department of Soil Science and Agrochemistry of the State Agrarian University of the Northern Trans-Urals. In the experiment, various doses of mineral fertilizers were used, ensuring the yield of grain crops from 3.0 to 6.0 t/ha. It was found that the mass of plant-root residues of spring wheat and oats has no significant differences and depends on the level of mineral nutrition. On the natural agricultural background, the mass of plant-root residues is 3.24-3.88 t/ha. Fertilization increases the yield of grain crops to 6.0 t/ha, and also increases the amount of plant-root residues: spring wheat - 4.47; oats – 6.04 t/ha. Increasing the doses of mineral fertilizers reduces the ratio of yield to the mass of plant-root residues from 1:1.6 to 1:1.10 units. It was found that almost half of the root system of spring wheat and oats is located in a layer of 0-10 cm, while the share of roots in a layer of 30-40 cm accounts for no more than 16% of the mass.

Sign in / Sign up

Export Citation Format

Share Document