scholarly journals Reproduction of red-book introduced plants of arboretum (on the example of Eastern Transbaikalia)

2021 ◽  
Vol 20 (1) ◽  
pp. 45-48
Author(s):  
E. A Banshchikova
Keyword(s):  
Root Formation ◽  
Vegetative Reproduction ◽  
Weather Conditions ◽  
Deciduous Species ◽  
Picea Obovata ◽  
Coniferous Species ◽  
Introduced Plants ◽  
Eastern Transbaikalia ◽  
Seed Method ◽  
Favorable Period

The paper presents the results of seed and vegetative reproduction of woody and shrubby introduced plantsincluded in the List of Objects of the plant world listed in the Red Book of the Trans-Baikal Territory. The objects of thestudy are red-book woody and shrubby plants growing on the territory of the arboretum: Picea obovata var. coeruleaMalyschev; Euonymus maackii Rupr.; Corylus heterophylla Fisch. ex Trautv.; Armeniaca sibirica (L.) Lam. The aim of thestudy is to preserve the gene pool of red-book woody and shrubby plants-introduced by seed and vegetative reproduction;to study the timing of cuttings, the effect of various root formation stimulators on the rooting process. Special attentionis paid to the development of methods of vegetative reproduction with the use of various growth stimulators, taking intoaccount the weather conditions of the Trans-Baikal Territory on coniferous and deciduous species. The features and termsof harvesting cuttings are studied. As a result, a favorable period for the process of rooting of coniferous species wasnoted – the phenophase “bud swelling”. The greatest number of roots was formed in cuttings harvested with a “heel”, nottreated with root formation stimulators (“control”). The greatest rooting of green cuttings of shrub species was observed inexperiments with the use of “Kornevin”. Propagation of Armeniaca sibirica showed good results by seed method.

scholarly journals DYNAMICS OF FORMATION OF THE SQUARE OF BEETS PLANTS OF BEETS DEPENDING ON VARIETY SPECIAL FEATURES AND TERMS OF SEEDING UNDER CONDITIONS OF THE RIGHT-FOREST STEPPE OF UKRAINE

2019 ◽  
pp. 173-182
Author(s):  
Inna Palamarchuk
Keyword(s):  
Aerial Part ◽  
Root Formation ◽  
Weather Conditions ◽  
Forest Steppe ◽  
Sowing Time ◽  
The Third ◽  
Sowing Dates ◽  
Number Of Leaves ◽  
The Right ◽  
Sowing Period

The results of studies on the dynamics of the formation of the area of leaves of plants of beetroot canteen depending on varietal characteristics and sowing time in the conditions of the Forest-Steppe of Right-Bank Ukraine are presented. The dependence of the growth and development of beetroot plants on varietal characteristics and sowing dates, as well as on weather conditions that were in the studied time, was revealed. The largest number of leaves in the phase of intensive root formation was formed by plants with a sowing period of I decade of May: 13.3 pcs. / plant – Bordo Kharkivskiy, 13.1 pcs. / plant – Opolskiy. The greatest mass of the root crop in the phase of intensive root formation was planted at a sowing period of the third decade of April: the Bordo Kharkivskiy – 72.4 g, the variety Opolskiy – 43.5 g. The same pattern was observed when taking into account the mass of the aerial part of beetroot. In the Bordo Kharkivskiy variety, it varied from 92.4 g to 87.5 g depending on the sowing time, in the Opolskiy variety from 33.7 g to 31.7 g, that is, the beet plants of the Bordo Kharkivskiy cultivar formed a significantly larger mass of the aerial part in comparison with the Opolskiy variety. Plants were sown with the largest leaf area at a sowing period of the 3rd decade of April: in the Bordo Kharkivskiy – 1.2 – 4.0 thousand m2 / ha, in the Opolskiy variety – 1.0 – 2.3 thousand m2 / ha. According to the results of the crop accounting, it was found that it depended on the variety and sowing period of beetroot. On average, over the years of research, the highest yield was observed with a sowing period of the third decade of April: 63.1 t / ha for the Bordo Kharkivskiy variety, 55.9 t / ha for the Opolskiy variety.

Differential Tolerance of Woody Nursery Crop Seedlings to Napropamide

1989 ◽  
Vol 3 (4) ◽  
pp. 584-589 ◽  
Author(s):  
Sumaryono ◽  
Garvin Crabtree
Keyword(s):  
Ponderosa Pine ◽  
Shoot Growth ◽  
Black Locust ◽  
Soil Layer ◽  
Woody Species ◽  
Herbicide Application ◽  
Deciduous Species ◽  
Coniferous Species ◽  
Secondary Roots

Experiments are conducted to evaluate the tolerance of three deciduous species: black locust, honeylocust, apple, and three coniferous species: Douglas fir, ponderosa pine, and Japanese black pine, in the seedling stage to napropamide. Deciduous species were more susceptible to napropamide than coniferous species. Domestic apple had the slowest seed germination and root development and was more susceptible. The deciduous species had more secondary roots in the shallow soil layer which contained most of the herbicide than the coniferous species. The roots of all woody species tested in vitro were inhibited significantly by contact with the herbicide, but only shoot growth of domestic apple and black locust was inhibited. Injury to woody nursery crop seedlings may be avoided by delaying herbicide application.

Foliar Abscission of Woody Plants by Combinations of Endothall and Ethephon

Weed Science ◽  
1974 ◽  
Vol 22 (6) ◽  
pp. 608-614 ◽  
Author(s):  
J. P. Sterrett ◽  
G. R. Leather ◽  
W. E. Tozer ◽  
W. D. Foster ◽  
D. T. Webb
Keyword(s):  
Woody Plants ◽  
Deciduous Species ◽  
Coniferous Species ◽  
White Ash ◽  
Dormant Season ◽  
Effective Doses ◽  
Quercus Palustris ◽  
Spray Volume ◽  
Adequate Coverage ◽  
Shoot Damage

Foliar abscission induced by mist blower applications of endothall [7-oxabicyclo(2,2,1)heptane-2,3-dicarboxylic acid] combined with ethephon [(2-chloroethyl)phosphonic acid] occurred within 14 days on six field-grown deciduous species. Refoliation was essentially complete after one dormant season except on pin oak (Quercus palustris Muenchh.), which exhibited shoot damage from May and June treatments. Abscission did not occur on coniferous species. Effective doses ranged from 150 to 2,400 μg/ml endothall with 4,800 μg/ml ethephon. In greenhouse experiments on white ash (Fraxinus americana L.), the most effective levels of surfactant with endothall/ethephon ranged from 0.5 to 1.3%, and a spray volume as low as one-quarter runoff gave adequate coverage.

scholarly journals Coefficients de distribution de la régénération, cinq ans après des coupes avec protection des petites tiges marchandes appliquées dans des sapinières et des pessières noires du Québec

2011 ◽  
Vol 87 (05) ◽  
pp. 669-683 ◽  
Author(s):  
Martin Riopel ◽  
Jean Bégin ◽  
Jean-Claude Ruel
Keyword(s):  
Black Spruce ◽  
Abies Balsamea ◽  
Balsam Fir ◽  
Annual Rainfall ◽  
Deciduous Species ◽  
Partial Cutting ◽  
Coniferous Species ◽  
Breast Height ◽  
Silvicultural Treatments ◽  
Heavy Equipment

For certain mature forests dominated by balsam fir (Abies balsamea [L.] Mill.) or black spruce (Picea mariana [Mill.] BSP), it may be preferable to harvest trees with diameter at breast height greater than 15 cm while conserving smaller ones. This treatment, called harvesting with protection of small merchantable trees, produces strips, where partial cutting is applied, alternating with corridors, which are disturbed by heavy equipment during harvesting. This project studied stocking levels five years after treatment on 4896 sub-plots of 4 m2 in 22 blocks. Stocking coefficients (SC) for coniferous and deciduous species were modeled in order to identify variables affecting stocking. The strips had well-distributed coniferous regeneration, while SC in the corridors were more variable and lower, occasionally less than 60%. Black spruce-dominated sites were not as well stocked as balsam fir-dominated sites. Stocking levels of protected coniferous merchantable trees positively influence coniferous and deciduous SC in the corridors. The presence of coniferous species is also affected by harvest season and total annual rainfall. Alternative silvicultural treatments applicable in certain corridors are presented.

scholarly journals SHRUBS AS AN ELEMENT OF THE PARK ENVIRONMENT

2021 ◽  
Author(s):  
A. Yudina ◽  
Marina Kochergina
Keyword(s):  
Species Diversity ◽  
Geographical Origin ◽  
Deciduous Species ◽  
Coniferous Species ◽  
Coniferous Trees ◽  
Number Of Species ◽  
Local Species ◽  
Deciduous Shrubs ◽  
Ornamental Shrubs ◽  
The City

Ornamental shrubs are one of the elements of the formation of the park environment and an integral part of urban landscaping. The paper presents the results of studying the species diversity of shrubs in park plantations in the city of Voronezh. The range includes more than 30 species, decorative forms and varieties of plants. Deciduous species are predominant, while coniferous species account for not much more than 10 %. Deciduous shrubs growing in the parks of the city of Voronezh belong to 14 families. Among them, there are beautiful flowering and decorative deciduous species, as well as plants with attractive fruits. Coniferous species belong to two families-pine and cypress. The cypress family is characterized by the greatest species (form, variety) diversity. The most popular types and varieties of coniferous trees are Western thuja "Smaragd", Western thuja "Danika", Cossack juniper, Cossack juniper"Tamariscifolia". The main types of shrub plantings in park stands are hedges and row plantings. The most common hedges are made of brilliant dogwood and Wanguttaspirea. Less often, groups and tapeworms are used in park plantings. The analysis of the geographical origin of shrubs showed that the largest number of species are introduced − their participation is more than 90%, the share of local species is less than 10%.

scholarly journals DETERMINATION of QUANTITATIVE CONTENT of EXTRACTIVE SUBSTANCES FROM the WOOD, ROOTS AND BARK of CONIFEROUS SPECIES in SIBERIA: LARCH (LARIX SIBIRICA L.), Scotch PINE (PINUS SYLVESTRIS L.), FIR (ABIES SIBIRICA L.), SPRUCE (PICEA OBOVATA L.) AND CEDAR (PINUS SIBIRICA DU TOUR.)

2018 ◽  
pp. 185-195 ◽  
Author(s):  
Людмила (Lyudmila) Андреевна (Andreyevna) Остроухова (Ostroukhova) ◽  
Татьяна (Tat'yana) Евгеньевна (Evgen'evna) Федорова (Fedorova) ◽  
Нина (Nina) Аркадьевна (Arkad'yevna) Онучина (Onuchina) ◽  
Алексей (Aleksey) Александрович (Aleksandrovich) Левчук (Levchuk) ◽  
Василий (Vasiliy) Анатольевич (Anatol'yevich) Бабкин (Babkin)
Keyword(s):  
Ethyl Acetate ◽  
Larix Sibirica ◽  
Water Soluble ◽  
Raw Material ◽  
Pinus Sibirica ◽  
Picea Obovata ◽  
Coniferous Species ◽  
Quantitative Content ◽  
Extractive Substances ◽  
Pinus Sibirica Du Tour

The study of the quantitative content of extractive substances from various tree organs (wood, roots, bark) of coniferous Siberian specieswas conducted. The larch (Larix sibirica L.), pines (Pinus sylvestris L.), fir (Abies sibirica L.), spruce (Picea obovata L.) and cedar (Pinus sibirica Du Tour) were investigated. Samples of coniferous tissues were selected in the Lake Baikal area in September-October 2015. Extractive substances were extracted from the ground raw material by extraction with ethyl acetate at the boiling point of the solvent for 4 hours. The resinous substances were extracted from the obtained ethyl acetate extracts by hexane by the infusion method for 2 days. The raw material samples, after extraction with ethyl acetate, were dried from solvent residues, then water-soluble substances were extracted by extraction with distilled water at 90 °C for 4 hours [1]. It is established the bark of the investigated coniferous species is most rich in extractive substances. It can contain up to 15% of the mass of absolutely dry matter (a.d.m.) of compounds soluble in ethyl acetate (for example, fir bark). The yield of extractive substances from coniferous wood is comparable with their content in the roots and ranges from 2 to 6% of the a.d.m. The greatest amount of resinous substances contain in wood of cedar and pine. This is more than 3% of a.d.m. The highest yield of water-soluble substances was from larch wood (18% of a.d.m.) and fir bark (10% of a.d.m.). A generalization and systematization of data on the chemical composition of phenolic extractive compounds of various coniferous tissues was carried out. It is shown that all the species under study contain a variety of biologically valuable polyphenols and have good potential for pharmacology, agriculture and forestry.

scholarly journals QUALITY INDICATORS OF THE NUTRITIONAL VALUE OF LEYMUS CHINENSIS (TRIN.) TZVEL. EASTERN TRANSBAIKALIA

2021 ◽  
pp. 191-200
Author(s):  
Lyudmila Nikolayevna Boloneva ◽  
Natal'ya Karlovna Badmaeva ◽  
Irina Nikolayevna Lavrentieva ◽  
Mariya Grigor'yevna Merkusheva
Keyword(s):  
Mineral Composition ◽  
Energy Content ◽  
Vegetative Reproduction ◽  
Steppe Zone ◽  
Metabolizable Energy ◽  
Metabolic Energy ◽  
Leymus Chinensis ◽  
Protein Ratio ◽  
Ecological Conditions ◽  
Eastern Transbaikalia

The biochemical and mineral composition, nutritional and energy value of Leymus chinensis in the steppe zone of Eastern Transbaikalia, growing in different soil and ecological conditions, due to the lack of data on these indicators, has been studied. For the first time, the content in dry matter of Leymus chinensis crude protein, sugars, crude fat, crude fiber, nitrogen-free extractive substances, feed units and metabolic energy and its mineral composition was studied. The dependence of the accumulation of nutrients on soil-ecological conditions, the duration of the growing season and the phase of plant development, the adaptive adaptation of this species to prolonged aridization, which causes its vegetative reproduction due to a decrease in generative reproduction, has been established. The protein ratio as an indicator of feed digestibility is characterized as broad (1 : 9.9–15). The amount of digestible nutrients varied in a very narrow range (592.5–602.2), as well as the energy content (10937.6–11116.6 kJ) and metabolizable energy in the food (9187.6–9337.9 kJ), which is associated with a short vegetation period of L. chinensis development in the sharply continental climate of the steppe zone of Eastern Transbaikalia. A specific feature of the mineral composition of this cereal was the high amount of S, as well as the K: Na ratio (7–38) at the norm of 3–5.

Root Formation by Stems of Eucalyptus botryoides Sm. In Natural Stands

1982 ◽  
Vol 30 (2) ◽  
pp. 147 ◽  
Author(s):  
CJ Lacey ◽  
AN Gillison ◽  
MI Whitecross
Keyword(s):  
Root Formation ◽  
Vegetative Reproduction ◽  
Adaptive Significance ◽  
Root Initiation ◽  
Adaptive Trait ◽  
Naturally Occurring ◽  
Dormant Bud ◽  
Natural Stands

The production of new shoots from dormant bud strands in eucalypt stems is a well documented and important adaptive trait of most species. The production of roots by stems of naturally occurring eucalypts and the associated adaptive significance of this phenomenon are poorly documented. This paper reports both field and glasshouse observations on the production of roots by coppice and lignotuber stems and fallen main stems of Eucalyptus botryoides Sm. Transverse sectioning of stems at sites of root initiation showed that the area immediately surrounding the root was comprised of aerenchyma tissue. The production of new shoots and roots by the various types of E. botryoides stems constitutes a mode of vegetative reproduction that may be vital for the persistence of this species in the harsher parts of its environmental range. A summary is provided of the taxonomic groupings of all eucalypts that have produced roots from stems under a range of field environments.

scholarly journals The state of the rare endemic species population Nonea decurrens (C.A. Mey.) G. Don fil. (fam. Boraginaceae, Magnoliopsida) on the Narattyubinsky ridge and its dynamics

2020 ◽  
Vol 9 (4) ◽  
pp. 192-198
Author(s):  
Elena Viktorovna Yarovenko ◽  
Azra Magomednurovna Gasanova
Keyword(s):  
Endemic Species ◽  
Weather Conditions ◽  
Depressive State ◽  
Morphometric Characters ◽  
Temperature And Precipitation ◽  
Study Results ◽  
Species Population ◽  
Favorable Period ◽  
Rare Endemic

The paper presents a four-year study results of a rare Dagestan endemic Nonea decurrens (C.A. Mey.) G. Don fil. сoenopopulation state on the Narattyubinsky ridge (Foothill Dagestan). An irregular distribution on the study area was found with confinement mainly to shrub communities. The degree of morphometric characters variability of the vegetative and generative spheres of Nonea decurrens in the two coenopopulations studied varies both between sites and research years. The maximum values of biometric indicators were noted in different years for site 2. 2013 was the most favorable period for the vegetative sphere development, while higher values in general were found in 2012. The calculated vitality data of the studied coenopopulations revealed their depressive state according to the majority of morphometric characters for all years of research. Based on the results of one-way analysis of variance, the influence of weather conditions (temperature and precipitation) on the quality of coenopopulations in the years of the study was established. The obtained materials can serve for further monitoring of rare species. Recommendations for the protection of the species are given.

scholarly journals Ecological, biological and coenotic features of common lily-of-the-valley (Convallaria majalis L.) in the conditions of Zhytomyr Polissya

2016 ◽  
pp. 65-69
Author(s):  
O. Ishchuk
Keyword(s):  
Raw Materials ◽  
Vegetative Reproduction ◽  
Weather Conditions ◽  
Seed Productivity ◽  
Natural Habitats ◽  
Seed Formation ◽  
Ecological Features ◽  
Convallaria Majalis ◽  
Bad Weather ◽  
Favorable Weather

A study deals with the natural habitats of Convallaria majalis L., its biological characteristics and capabilities to the seed to renewal. The features of generative and vegetative reproduction Lily of the valley in terms of Polissya are determined. A lily of valley (Convalaria majalis L., is a valuable medicinal herb, as well as an ornamental plant. The healing properties of lily of valley are caused by the presence of glycosides and saponins. The popularity of the species leads to its reduction. Nowadays the possibilities of this valuable plant application are not determined. That is why; there is a necessity to explore the habitat of this plant, its bio ecological features and the possibilities of seed restoration. The purpose of investigation is to study ecological, biological and coenotic features of a lily of valley in Zhytomyr Polissya region. Conclusions and perspectives of further researches are proved. The favorable weather conditions in 2012 allowed sufficient germ number to form. It was 200 per generative sprout in 2013. The real seed productivity in years of the research was not high and it was from 20–30 to 38 seed per species. 2013 was the least favorable year for seed formation. A lily of valley forms from 10 to 18 germs of seeds. But some part of them is able to form seeds. So, 12 germs could form 4, 3 seeds in 2011, 10 germs could produce only 4, 4 in 2012. The number of seed germs increased in 2013, but seeds were not produced. The absence of seed materials is due to the bad weather conditions during the pollination and flowering period. So, the seed restoration of a lily of valley is rather slow and random. The population is restored because of its vegetative propagation. The further researches will be focused on Convalaria majalis habitat clarification in natural conditions of Zhytomyr region in order to develop the recommendations for the proper harvesting of pharmaceutical raw materials without damaging any other natural species.

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