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Общее количество найденных документов : 7
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nesterenko T.V., Shikhov V.N., Tikhomiro A.A.
Заглавие : Thermoinduction of chlorophyll fluorescence and the age-related condition of higher plant leaves
Место публикации : Russian Journal of Plant Physiology. - 2001. - Vol. 48, Is. 2. - С. 244-251. - ISSN 10214437 (ISSN) , DOI 10.1023/A:1009016520582
Ключевые слова (''Своб.индексиров.''): development--leaf--thermoinduction of chlorophyll fluorescence--cucumis--cucumis sativus--embryophyta--lycopersicon esculentum--sativum--triticum aestivum
Аннотация: The age-related changes in the temperature dependence curves (TDC) of chlorophyll fluorescence were studied in leaf segments of wheat (Triticum aestivum L.), tomato (Lycopersicum esculentum Mill.), and cucumber (Cucumis sativum L.) plants grown under controlled photoculture conditions. Three major TDC patterns of chlorophyll fluorescence were identified within the temperature range of 25-70В°C, with each of the patterns corresponding to a certain phase of leaf development. The transition from one type of thermogram to another was a gradual and ordered process. The magnitude of the low-temperature TDC peak increased until leaves completely expanded and declined with leaf senescence. In the course of leaf senescence, the thermograms exhibited an additional shoulder, which further changed into a peak at 55-65В°C with increasing magnitude. Our data provide the basis for assessing leaf age from the type of chlorophyll fluorescence thermogram and the changes in the particular indices characteristic of TDC of chlorophyll fluorescence.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kovaleva N.P., Tikhomirov A.A., Dolgushev V.A.
Заглавие : Specific Characteristics of Rhodiola rosea Growth and Development under the Photoculture Conditions
Место публикации : Russian Journal of Plant Physiology. - 2003. - Vol. 50, Is. 4. - С. 527-531. - ISSN 10214437 (ISSN) , DOI 10.1023/A:1024781025696
Ключевые слова (''Своб.индексиров.''): photoculture--plant growth and development--rhodiola rosea--salidroside--crassulaceae--rhodiola--rhodiola rosea
Аннотация: Growth and development of Rhodiola rosea L. plants (the family Crassulaceae) were compared in their natural habitat, field stands, and in photoculture. By the indices of growth and development, plants grown for 135-137 days under the intensive photoculture were shown to exceed the 3-year-old plants developed in the natural habitats and 1-1.5-year-old plants grown in the field stands. Under the photoculture, 35% of all the plants under study started flowering at the day 75-77 after seed germination. The content of salidroside in the rhizomes of the 135-137-day-old plants was 0.4-0.6% per dry weight. Following photoculturing for 245 days, rhizome weight increased 4. 5-fold as compared to the 135-137-day-old plants, and the salidroside concentration reached 1.2%, the level corresponding to the maximum content of this glycoside in the plants growing in their natural habitat and exceeding by 1.5-3 times the levels observed in the plants grown in the field stands. Under the photoculture conditions, plants of R. rosea were shown to grow without the dormancy period. Several factors apparently raised the salidroside concentration in the 245-day-old plants under the photoculture conditions, including enhanced growth, absence of the dormancy period and the period of lowered temperatures; as a whole, these factors promoted the detoxification, storage, and/or transport of the primary metabolic products.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : LISOVSKII G.M., SIDKO F.Y., POLONSKII V.I., TIKHOMIROV A.A., ZOLOTUKHIN I.G.
Заглавие : LIGHT-INTENSITY AND QUALITY AS FACTORS DETERMINING CENOSIS FORMATION AND THE YIELD OF PLANTS IN PHOTOCULTURE
Колич.характеристики :7 с
Место публикации : SOVIET PLANT PHYSIOLOGY: PLENUM PUBL CORP, 1987. - Vol. 34, Is. 4. - P511-517. - ISSN 0038-5719
Примечания : Cited References: 52
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nesterenko T.V., Shikhov V.N., Tikhomirov A.A.
Заглавие : Thermoinduction of chlorophyll fluorescence and the age-related condition of higher plant leaves
Колич.характеристики :8 с
Место публикации : Russ. J. Plant Physiol.: MAIK NAUKA/INTERPERIODICA, 2001. - Vol. 48, Is. 2. - P244-251. - ISSN 1021-4437, DOI 10.1023/A:1009016520582
Примечания : Cited References: 27
Ключевые слова (''Своб.индексиров.''): thermoinduction of chlorophyll fluorescence--leaf--development
Аннотация: The age-related changes in the temperature dependence curves (TDC) of chlorophyll fluorescence were studied in leaf segments of wheat (Triticum aestivum L.), tomato (Lycopersicum esculentum Mill.), and cucumber (Cucumis sativum L.) plants grown under controlled photoculture conditions. Three major TDC patterns of chlorophyll fluorescence were identified within the temperature range of 25-70 degreesC, with each of the patterns corresponding to a certain phase of leaf development. The transition from one type of thermogram to another was a gradual and ordered process. The magnitude of the low-temperature TDC peak increased until leaves completely expanded and declined with leaf senescence. In the course of leaf senescence, the thermograms exhibited an additional shoulder, which further changed into a peak at 55-65 degreesC with increasing magnitude. Our data provide the basis for assessing leaf age from the type of chlorophyll fluorescence thermogram and the changes in the particular indices characteristic of TDC of chlorophyll fluorescence.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kovaleva N.P., Tikhomirov A.A., Dolgushev V.A.
Заглавие : Specific characteristics of Rhodiola rosea growth and development under the photoculture conditions
Колич.характеристики :5 с
Место публикации : Russ. J. Plant Physiol.: MAIK NAUKA/INTERPERIODICA, 2003. - Vol. 50, Is. 4. - P527-531. - ISSN 1021-4437, DOI 10.1023/A:1024781025696
Примечания : Cited References: 19
Ключевые слова (''Своб.индексиров.''): rhodiola rosea--plant growth and development--photoculture--salidroside
Аннотация: Growth and development of Rhodiola rosea L. plants (the family Crassulaceae) were compared in their natural habitat, field stands, and in photoculture. By the indices of growth and development, plants grown for 135-137 days under the intensive photoculture were shown to exceed the 3-year-old plants developed in the natural habitats and 1-1.5-year-old plants grown in the field stands. Under the photoculture, 35% of all the plants under study started flowering at the day 75-77 after seed germination. The content of salidroside in the rhizomes of the 135-137-day-old plants was 0.4-0.6% per dry weight. Following photoculturing for 245 days, rhizome weight increased 4.5-fold as compared to the 135-137-day-old plants, and the salidroside concentration reached 1.2%, the level corresponding to the maximum content of this glycoside in the plants growing in their natural habitat and exceeding by 1.5-3 times the levels observed in the plants grown in the field stands. Under the photoculture conditions, plants of R. rosea were shown to grow without the dormancy period. Several factors apparently raised the salidroside concentration in the 245-day-old plants under the photoculture conditions, including enhanced growth, absence of the dormancy period and the period of lowered temperatures; as a whole, these factors promoted the detoxification, storage, and/or transport of the primary metabolic products.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zavorueva E.N., Ushakova S.A.
Заглавие : Characteristics of slow induction curve of chlorophyll fluorescence and CO2 exchange for the assessment of plant heat tolerance at various levels of light intensity
Колич.характеристики :8 с
Место публикации : Russ. J. Plant Physiol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2004. - Vol. 51, Is. 3. - P294-301. - ISSN 1021-4437, DOI 10.1023/B:RUPP.0000028674.39572.1c
Примечания : Cited References: 18
Ключевые слова (''Своб.индексиров.''): triticum aestivum--raphanus sativus var. minor--fluorescence--heat tolerance--pigments--co2 exchange
Аннотация: The heat tolerance of wheat (Triticum aestivum L.) and radish (Raphanus sativus L. var. minor) cenoses exposed to elevated and damaging air temperatures (35 degreesC for 20 h, 45 degreesC for 7 h) under photoculture conditions at various levels of photosynthetically active radiation (PAR) was assessed by measuring characteristics of the slow induction curve of chlorophyll fluorescence at 682 and 734 nm and the CO2 exchange rate. Irrespective of the illumination level, the exposure of the cenoses to 35 degreesC did not induce irreversible changes in the plant photosynthetic apparatus. The lowest extent of damage to wheat and radish cenoses exposed to 45 degreesC was observed at 150 W/m(2) of PAR, whereas the highest damage of the plants was observed at an illumination level that was close to the compensation point of the cenose photosynthesis (50-70 W/m(2) of PAR at air temperature of 24 degreesC). Viability index proved to be the most sensitive. characteristic, compared to other characteristics, which were determined by measuring the slow phase of fluorescence induction at 682 and 734 nm. In the cenoses studied, the pattern of changes in the viability index in response to a stress factor was close to the changes in the photosynthetic rate.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhomirov, Alexander A.
Заглавие : INTRACANOPY LIGHTING IN PHYTOCENOSES AND PHOTOBIOLOGICAL EFFICIENCY OF RADIATION IN PHOTOCULTURE CONDITIONS
Колич.характеристики :12 с
Коллективы : Biophysics Institute of the Federal Research Centre "Krasnoyarsk Research Facility of the Siberian Branch of the Russian Academy of Sciences" [VI.56.1.4, 0287-2019-0009]
Место публикации : Light Eng.: ZNACK PUBLISHING HOUSE, 2021. - Vol. 29, Is. 2. - С. 4-15. - ISSN 0236-2945, DOI 10.33383/2020-076
Примечания : Cited References:42. - The work is performed as part of state assignments VI.56.1.4 and 0287-2019-0009 "Research of the Effect of Plant Texture on Photosynthesis Efficiency" with the Biophysics Institute of the Federal Research Centre "Krasnoyarsk Research Facility of the Siberian Branch of the Russian Academy of Sciences".
Предметные рубрики: DIFFERENT SPECTRAL COMPOSITION
EMITTING-DIODES
GREEN LIGHT
LETTUCE
Аннотация: The review is devoted to the study of the internal radiation regime in the canopies cultivated under controlled environmental conditions. The expediency of using canopies as an object of research for evaluating the photobiological efficiency of radiation in light culture conditions is justified. The appropriateness of light measurements in multi-tiered canopies is shown, taking into account the role of leaves of different tiers in the formation of an economically useful crop. The main requirements for light devices for their use in measuring artificial radiation in light culture conditions are considered, and a brief analysis of the existing instrument base for performing these studies is given. A number of examples show the complexity and ambiguity of the internal structure of the light field that is forming within canopies in light culture conditions. Conceptual approaches to the choice of spectral and energy characteristics of artificial irradiation for plant light culture are proposed and justified. The necessity of taking into account the light conditions of leaves of different tiers when choosing the spectral and energy characteristics of light sources for the cultivation of multi-tiered canopies is justified. Techniques, methods, and light sources used for additional intracanopy lighting are analysed. The efficiency of using side illumination of plant canopies and conditions for its implementation are considered. The advantages of the volume distribution of canopies on the most common multi-tiered lighting installations are discussed. Based on the presented mate- rial, we consider ways to improve methodological approaches for evaluating the photobiological effectiveness of artificial radiation in light culture conditions for canopies of cultivated plants, taking into account the features of their architectonics and internal radiation regime.
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