Assessment of Floral Organs State of &lt;i&gt;Tilia&lt;/i&gt; Genus Representatives under Environment Pollution Conditions Caused by Emissions of Prydniprovska Thermal Power Plant, Dnipropetrovsk City

Grytsay, Zoya; Miasoid, Galyna

doi:10.18052/www.scipress.com/ilns.55.52

Cited by 5 publications

(5 citation statements)

References 9 publications

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“…heavy metals [15,30], gaseous air pollutants [31,32], and motor vehicle emissions [7,33]. For the purpose of bioindication of the environmental status in different functional areas of the city of Dnipro, a number of researchers have undertaken investigations into pollen viability in the plants growing in the territories of industrial enterprises, in the sanitary zones [34,35] and in some streets [36] in the city of Dnipro. These surveys indicate that the levels of pollen grains sterility at the examined sites were greater than those in the control site.…”

Section: Discussionmentioning

confidence: 99%

“…In most cases, the observations were carried out in different localities and there were only few instances, if any, when the same plant species were selected as test objects for analyses. It is known that pollen grains in various plant species differ in starch contents, enzyme activity, proline contents and in other specific characteristics, as well as in pollen viability and longevity [35]. Reasoning from this, we calculated an average value of pollen sterility index for each of four investigated plant species (Table 2).…”

Section: Discussionmentioning

confidence: 99%

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Pollen Quality in Woody Plants in the City Parks of Dnipro, Ukraine

Ivanchenko

Bessonova

2016

ILNS

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Abstract. This research was conducted to study pollen quality in woody plants in the city parks of Dnipro, which are located at various distances from the sources of anthropogenic pollution. It has been revealed that sterile pollen in its greatest abundance was present in plant species in the Park of Memory and Reconciliation and Molodyozhny park, as both are situated within the range of emission transfer from the Western Industrial Complex, while the least abundant sterile pollen was detected in the park named after Yu. Gagarin and that named after V. Dubinin. According to sterility indices, the pollen in Betula pendula Roth. and that in Acer platanoides L. were most sensitive to environmental pollution. In the city parks, the amounts of shrunk and abnormally shaped pollen grains increases; giant forms with grain diameters exceeding standard, as well as dwarf forms are not rare in occurrence. The highest percentage of pollen grains of atypical shape and size was observed in the same parks where the pollen sterility index had its highest values.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Pollen Quality in Woody Plants in the City Parks of Dnipro, Ukraine

Ivanchenko

Bessonova

2016

ILNS

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“…The ornamental and economic features and attractiveness of these cultivars are similar to those of the original nothospecies, but the 'Ola' trees have an openwork, spreading crown and large pink flowers; 'Royalty' trees have a compact, lowbranched conical crown; and small 'Selkirk' trees form a broad, spherical crown (Opalko et al, 2016). The development of the reproductive organs was characterized by indicators of fertility and viability of pollen grains according to the method of Zoya Pausheva (Grytsay & Miasoid, 2016), and the percentage fruit set (the ratio of the number of fruits to the number of flowers), and seed set (the ratio of the number of formed seeds to the number of set fruits) according be standard methods (Racskó et al, 2006).…”

Section: Methodsmentioning

confidence: 99%

Peculiarities of the development of reproductive organs of ornamental crabapples (Malus spp.) depending on drought resistance

Konopelko,

Opalko,

Balabak

et al. 2023

Regul. Mech. Biosyst.

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The current task for both pomiculture and ornamental horticulture is the formation of plant cultivars resistant to different environmental stress and maintaining their high productivity. Drought is one of the most significant environmental factors that inhibit plant growth and development and cause a set of morphological, physiological, and biochemical changes in plant organisms. The aim of our research was to discover the relationship between the development of the reproductive organs of ornamental crabapples and the physiological indicators determined by drought stress factors. The four species and three cultivars of the ornamental crabapples (Malus spp.) from the collection of the National Dendrological Park “Sofiyivka” of NAS of Ukraine were involved in the study: M. × floribunda Siebold ex Van Houtte, M. halliana Koehne, M. niedzwetzkyana Dieck, M. × purpurea (A. Barbier) Rehder, M. × purpurea ‘Ola’, M. × purpurea ‘Royalty’, and M. × purpurea ‘Selkirk’. Drought resistance was determined by the following quantitative indicators: leaf water content, relative turgidity, leaf water deficit, and excised leaf water retention capacity. The leaf water content ranged from 60.0% (M. × floribunda) to 67.2% (M. × purpurea), the relative turgidity ranged from 81.7% (M. × purpurea ‘Ola’) to 98.9% (M. halliana), and the leaf water deficit ranged from 6.8% (M. halliana) to 24.4% (of M. niedzwetzkyana). As a result, the leaves of M. halliana lost the smallest amount of water in 24 hours (50.2%), whereas M. × purpurea 'Ola' leaves lost the largest amount (77.4%). The development of the reproductive organs was estimated based on the fertility and viability of pollen grains, percentage of fruit and seed set. Pollen fertility ranged from 79.8% (of M. niedzwetzkyana) to 95.0% (M. × purpurea 'Ola'); its viability varied from 5.1% (M. niedzwetzkyana) to 51.5% (M. × floribunda). The highest fruit set percentages were recorded in M. floribunda (80.5%), while the lowest was in M. × purpurea 'Royalty' (16.4%). The average percentage of seed sets was 48.5%. The development of the reproductive organs of Malus specimens depended on their drought resistance. The fruit and seed set percentages had a strong negative correlation with the water deficit in leaves determined during the period of drought stress. The percentage of fruit set was also strongly correlated with relative turgidity. The leaf water deficit and relative turgidity were the most important physiological indicators in the drought resistance study, taking into account the need to maintain crop yield and the decorative effect of Malus plants.

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“…Техногенне забруднення довкілля змінює функціонування рослинних організмів на всіх рівнях їх організації, у тому числі клітинному, тканинному, органному (Bessonova, 2006;Griztay & Shupranova, 2015;Iusypiva & Miasoid, 2017). За дії стресових умов зростання серед реакцій-відповідей рослин на вплив токсичних речовин наявні зміни в розмірах річних приростів пагонів та асиміляційних органів, процесах формування листового апарату, у закладанні й розвитку репродуктивних структур, у процесах проростання насіння та формування сходів, самосіву та підросту головних і супутніх лісоутворювальних деревних порід (Bessonova & Usypiva, 2001;Stasova et al, 2009;Grytsay & Miasoid, 2016).…”

Section: дніпровський національний університет імені олеся гончара дunclassified

Bioecological analysis of Picea pungens needles in the deterioral conditions of the DTEK Prydniprovsk thermal power plant

Yusypiva

2018

ean

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Crucial for the research on adaptiogenesis of introduced coniferous species is the study the anatomical structure of their vegetative organs, especially the needles, which provides the productivity of individual trees and plantings in general. In conditions of anthropogenic pressure of the environment there are changes in the thickness and structure of the histological elements of vegetative organs of coniferous species, in the first place, protective tissues. Therefore, the study of the anatomical structure of the needles is relevant in the context of studying the ways and mechanisms of adaptation of gymnosperms to industrial emissions and the finding sensitive phytoindicators of environmental pollution and the condition of coniferous plants in man-made zones. However, today the chronic effect of phytotoxicants on the anatomical structure of needles is insufficiently studied. Ecological and anatomical studies of P. pungens in the conditions of the steppe zone of Ukraine for the effects of technogenesis are practically absent. Prydniprovsk TPP is the largest source of pollution in the city of Dnipro (Ukraine): its emissions make up 68,9 % of the volume of toxic compounds of all enterprises and transport facilities. The main pollutants of emissions from Prydniprovsk TPP are SO2, NO2, solids, CO. In order to reduce the negative impact of the TPP emissions, green plantations mainly from softwood are created around it, which purify the atmosphere and improve the environment throughout the year. In view of this, the purpose of the work is to analyse the state of morphological and anatomical indices of the Picea pungens Engelm f. glauca Beissn. needles under the influence of emissions from Prydniprovsk TPP. The research is conducted according to generally accepted methods (Zlobin et al., 2009; Albrechtova, 2003; Permjakov, 1988). It has been found that the length and weight of needles in experimental specimens of P. pungens decrease with respect to the values of these indices in plants of relatively pure zone; therefore, they are sensitive growth parameters to the action of environmental pollution. Nevertheless, the intensity of the growth of P. pungens needles does not change; therefore, it is not an informative feature for assessing the living conditions of the prickly fir in the industrial zone. The analysis of the micromorphological features of P. pungens needles showed resistance to anthropogenic pressure of its characteristics, such as width and thickness, although the area of needles decreases, which is associated with a significant decrease in the technogenic conditions of the environment of its length. In plants of P. pungens, growing on the territory adjacent to Prydniprovsk TPP, the size of the constituents of needles of P. pungens (epidermis and hypoderms), as well as the number, diameter and type of placement of resin passages in the mesophyll of the needles do not differ significantly from such indices in plants of relatively pure zone indicating the stability of these features and the resistance of the needles of the investigated species to the emissions of TPP. The thickness of the assimilation parenchyma from the adaxial side of the needle of P. pungens in the conditions of technogenesis increases. Among the histological elements of the needles P. pungens the greatest influence of man-made emissions is experienced by the components of the central conductive cylinder: the layer of endoderm thickens by 15,9 %, as compared with the control value, which we consider as an adaptive reaction of plants to man-made stress; the diameter of the central conductive cylinder and the thickness of xylem increases. Probably this is due to the need for better water supply of plants. Thus, in the conditions of technogenesis, stability of the histological characteristics and plasticity of the morphometric characteristics of the needles P. pungens were revealed. The formation of adaptive mechanisms of compensatory type in the needles of P. pungens under the influence of phytotoxicants was found: there is an increase of the size of the endoderm, mesophyll, xylem and the central conductive cylinder of the needles. It is shown that the ratio of particles of histological structures of needles (in %) to the action of pollutants of TPP remains practically unchanged. The informative test parameters for monitoring studies of the condition of coniferous plants in man-made zones (mass, length and area of needles) are suggested. Estimation of P. pungens resistance to the components of the thermal power plant's emissions as a medium-resistant species. It is recommended to use P. pungens in landscaping of contaminated areas.

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Assessment of Floral Organs State of <i>Tilia</i> Genus Representatives under Environment Pollution Conditions Caused by Emissions of Prydniprovska Thermal Power Plant, Dnipropetrovsk City

Cited by 5 publications

References 9 publications

Pollen Quality in Woody Plants in the City Parks of Dnipro, Ukraine

Pollen Quality in Woody Plants in the City Parks of Dnipro, Ukraine

Peculiarities of the development of reproductive organs of ornamental crabapples (Malus spp.) depending on drought resistance

Bioecological analysis of Picea pungens needles in the deterioral conditions of the DTEK Prydniprovsk thermal power plant

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