Comparative analysis of photosynthetic indicators in freesia hybrids on the Black sea coast of Krasnodar region

Oksana, Belous; Klemeshova, K. V.; Olga, Pashchenko

doi:10.17221/189/2015-hortsci

Cited by 6 publications

(1 citation statement)

References 3 publications

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“…The establishment of the physiological and biochemical state of maple plants in the urban environment and in the background (botanical garden) led to the need to consider the similarity of the functional state in the context of the genetic characteristics of species [33,34]. We used cluster analysis (Fig.…”

Section: Fig 2 the Content Of Ascorbic Acid (Aa) In The Leaves Of Map...mentioning

confidence: 99%

Indicators of adaptability of representatives of the genus Acer in an urban environment

Chernyavskaya,

Ednich,

Belous

2023

BIO Web Conf.

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A topical task has been set to assess the state of arboreal vegetation used in the landscaping of the city on the example of five species of the genus Acer. The main physiological and biochemical characteristics associated not only with the functionality of plants, but also involved in the formation of the plant's response to stress are involved for evaluation. It is shown that species differ in their physiological and biochemical characteristics and different reactions are observed in species to anthropogenic stressors. A significantly lower number of all groups of photosynthetic pigments was observed in species A. negundo and A. saccharinum, A. negundo it also differs in low indicators of the specific surface area of the sheet. In all five maple species in the urban environment, there was a significant increase in the total fund of green and yellow pigments compared to the background; there is an increase in the ratio Σchl / Σcar by 1.1-1.7 times, mainly due to a decrease in the level of chlorophylls and an increase in the proportion of carotenoids. A. negundo has significantly lower water deficiency and water loss by leaf tissues. The highest values of ascorbic acid were noted in the species A. saccharinum. To interpret the responses of species to the stressors of an urbanized area, cluster analysis was used, which divided the species into two clusters; at the same time, common mechanisms of responses were identified in maples that are introduced from different habitats.

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Section: Fig 2 the Content Of Ascorbic Acid (Aa) In The Leaves Of Map...mentioning

confidence: 99%

Indicators of adaptability of representatives of the genus Acer in an urban environment

Chernyavskaya,

Ednich,

Belous

2023

BIO Web Conf.

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Promising drought-resistant and heat-resistant species and varieties of the genus Malus Mill. for creation of sustainable agrocenoses in the Trans-Volga-Ural region steppe

Berezina

Savin

2021

IOP Conf. Ser.: Earth Environ. Sci.

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The stability and productivity of horticultural agrocenoses depend on the adaptation of fruit plants to climatic and landscape-ecological conditions. To form profitable fruit plantings in the Trans-Volga-Ural region, it is necessary to select varieties with high potential resistance to drought. The purpose of our study is to study the drought- and heat resistance of species and varieties of the genus Malus Mill growing in the study area. To estimate drought-resistance, we identified: the water content of leaves, water deficit, the water-retaining ability for 2 – 6 hours, the water loss on average for 1 hour, and heat-resistance. 180 samples of the genus Malus kinds, sorts, and varieties were the study objects for two years. Stress climatic factors were not noticed in 2019; therefore, most of the studied samples received a high assessment of relative drought-resistance. M. fuska, M. zumi, M. kaido., M. baccata (Dubki), and clonal rootstocks Ural 1, Ural 5, Ural 8, Arm 18, OB 3-4, OB 4-3, 54-118 and others were among the most drought-resistant species and varieties of the genus Malus in 2019. The vegetation period of 2020 was abnormally hot and dry. According to the water content in tissues, many of the leading sorts and forms of 2019 showed lower results in 2020. M. denticulata, M. mandzschurica, M. sikkimensis, M. turkmenorum №4, M. turkmenorum №5, M. purpurea, M. zumi, 70-20-20, Ural 7, Volga 12. were noticed among the most resistant representatives of the Malus family in 2020.

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The content of photosynthetic pigments in the leaves of Chrysanthemum×hortorum Bailey

Klemeshova

Gabueva

2020

Plodovodstvo i âgodovodstvo Rossii

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The article presents data on the content of the main photosynthetic pigments in the leaves of various varieties of Chrysanthemum×hortorum, depending on the methods of cultivation. The efficiency of the photosynthetic apparatus is one of the most important parameter of the adaptive potential of plants in limiting environmental conditions. It’s linked with the peculiarities of the development and functioning of the pigment complex. The purpose of the work is to study the features of the content of photosynthetic pigments in the leaves of various Chrysanthemum×morifolium varieties to expand the assortment in the humid subtropics of Russia. The studies were conducted on model varieties of large-flowered (‘Sevan’ control, ‘Gilbert Leigh Purple’, ‘Gagarin’) and small-color chrysanthemums (‘Golden Niva’ control, ‘Tigerrag’, ‘Vesuvio’, ‘Dante’) cultivated in open and closed ground. It was found that relative humidity and illumination are higher in open ground throughout the year (average annual values in open ground are 65.4 % and 28 563 lx, in closed ground 61.8 % and 18 763 lx), while the temperature regime is higher in closed ground (average values in open and closed ground +18.6 °C and +20.8 °C, respectively). This favorably affects the preservation of the roots of chrysanthemum in winter when grown indoors in an unregulated microclimate (average temperature in the winter months in the open ground is +9.1 °C, in the closed +11.0 °C), but it negatively affects vegetative plants in the summer period (average temperature indicators in open and closed ground are +26.8 °С and +28.8 °С, respectively). The content of photosynthetic pigments in the leaves of Chrysanthemum×hortorum was studied in the period of the budding and flowering vegetation 2018-2019. Varietal differences were noted in the quantitative composition of pigments and their ratio, as well as differences depending on growing conditions in open ground and in protected ground (in glass greenhouses under solar heating).

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Comparative analysis of photosynthetic indicators in freesia hybrids on the Black sea coast of Krasnodar region

Cited by 6 publications

References 3 publications

Indicators of adaptability of representatives of the genus Acer in an urban environment

Indicators of adaptability of representatives of the genus Acer in an urban environment

Promising drought-resistant and heat-resistant species and varieties of the genus Malus Mill. for creation of sustainable agrocenoses in the Trans-Volga-Ural region steppe

The content of photosynthetic pigments in the leaves of Chrysanthemum×hortorum Bailey

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