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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : ZAVORUEVA E.N., BELYANIN V.N.
Заглавие : LIGHT-INDUCED-CHANGES IN SIZE OF THE PHOTOSYNTHETIC UNIT OF PHOTOSYSTEM-I IN BLUE-GREEN-ALGAE
Колич.характеристики :6 с
Место публикации : SOVIET PLANT PHYSIOLOGY: PLENUM PUBL CORP, 1984. - Vol. 31, Is. 3. - P326-331. - ISSN 0038-5719
Примечания : Cited References: 20
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : ZAVORUEVA E.N., BELYANIN V.N.
Заглавие : LIGHT-INDUCED-CHANGES IN SIZE OF THE PHOTOSYNTHETIC UNIT OF PHOTOSYSTEM-I IN BLUE-GREEN-ALGAE
Место публикации : SOVIET PLANT PHYSIOLOGY: PLENUM PUBL CORP, 1984. - Vol. 31, Is. 3. - С. 326-331. - 6. - ISSN 0038-5719
Примечания : Cited References: 20
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : TIKHOMIROV A.A.
Заглавие : PHOTOSYNTHESIS OF CUCUMBER PLANTS FORMED DURING RADIATION OF DIFFERENT SPECTRAL COMPOSITION OF PHOTOSYNTHETIC ACTIVE RADIATION (PAR)
Колич.характеристики :6 с
Место публикации : FIZIOLOGIYA I BIOKHIMIYA KULTURNYKH RASTENII: INST PLANT PHYSIOL GENETICS, 1989. - Vol. 21, Is. 1. - P3-8. - ISSN 0256-1425
Примечания : Cited References: 0
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : NESTERENKO T.V., SIDKO F.Y.
Заглавие : QUANTITATIVE DESCRIPTION OF SLOW INDUCTION OF CHLOROPHYLL FLUORESCENCE DURING ONTOGENY OF HIGHER-PLANT LEAVES
Колич.характеристики :6 с
Место публикации : RUSSIAN PLANT PHYSIOLOGY: PLENUM PUBL CORP, 1993. - Vol. 40, Is. 1. - P5-10. - ISSN 1070-3292
Примечания : Cited References: 23
Ключевые слова (''Своб.индексиров.''): cucumis-sativus--leaves--ontogeny--chlorophyll fluorescence
Аннотация: Additional integral and kinetic parameters of induction curves have been introduced on the basis of analysis of currently employed parameters of slow induction of fluorescence (SIF) for a more complete quantitative description of SIF changes during ontogenesis of higher plant leaves. High sensitivity of the additional parameters to the age state of leaf tissue as compared with previously employed parameters is demonstrated on the example of cucumber leaves (Cucumis sativus L.). Analysis of the relationship between the photosynthetic rate and SIF parameters of separate cucumber leaf disks revealed the presence of a high positive correlation between the photosynthetic rate and the greatest possible average decline in fluorescence intensity during the inductive period for mature regions of the leaf and regions starting to senesce (the correlation coeffcient attained values of 0.95), which indicates the possibility of using the given SIF parameter in further elaboration of methods for estimation of chloroplast photosynthetic activity at the level of the higher plant leaf.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zavorueva E.N., Nesterenko T.V., Volkova E.K., Tikhomirov A.A.
Заглавие : Photosynthetic apparatus of cucumber and pea plants grown under red light with discrete or continuous spectra
Место публикации : Russian Journal of Plant Physiology. - 1996. - Vol. 43, Is. 2. - С. 191-199. - ISSN 10214437 (ISSN)
Ключевые слова (''Своб.индексиров.''): and thermoinduced changes in fluorescence yield--cucumis sativum--photo--photophosphorylation--pigments--pisum sativum
Аннотация: The effect of light sources with discrete or continuous spectra of red light (50 W/m2, 600-700 nm) on the structural and functional characteristics of chloroplasts were studied in leaves of cucumber (Cucumis sativum L.) plants, which die under strong red light, and pea (Pisum sativum L.) plants, which tolerate red light under the same conditions. Leaf condition was assessed by measuring thermo-and photoinduced changes in the chlorophyll fluorescence yield and the photochemical and photophosphorylating activities of the chloroplasts. Different responses of the pigment apparatus of pea and cucumber plants to red light with continuous or line spectra were revealed. Pea plants responded to discrete-spectrum light by changing P700 content, the ratio of antenna chlorophyll to P700, and the position of the low-temperature peak of the temperature-induced chlorophyll fluorescence yield. In cucumber plants, disturbances in the energy transfer from the short-wavelength pigments to chlorophyll a were observed. In both plants, the effects of line spectrum light on the pigment apparatus were reversible; the ratio of cyclic to noncyclic photophosphorylation, photosynthetic control, and the extent of the coupling of photosynthetic electron transport to photophosphorylation did not change compared to the control light. The need for examining the line spectra of light sources for growing plants under moderate intensities of artificial light (about 50 W/m2 of photosynthetically active radiation) is discussed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zavorueva E.N., Ushakova S.A., Volkova E.K., Tikhomirov A.A., Mogil'naya O.A., Medvedeva S.E.
Заглавие : Fine chloroplast structure in cucumber and pea leaves developed under red light
Место публикации : Russian Journal of Plant Physiology. - 2000. - Vol. 47, Is. 6. - С. 740-747. - ISSN 10214437 (ISSN)
Ключевые слова (''Своб.индексиров.''): cucumis sativus--pigments--pisum sativum--red light--ultrastructure
Аннотация: Photosynthetic activity, the content of various photosynthetic pigments, and the chloroplast ultrastructure were examined in the leaves of cucumber (Cucumis sativus L.) and pea (Pisum sativum L.) plants of different ages grown under red light (600-700 nm, 100 W/m2). In pea leaves tolerant to red-light irradiation, chloroplast ultrastructure did not essentially change. In the first true leaves of cucumber plants susceptible to red-light irradiation, we observed a considerable increase in the number and size of plastoglobules, the appearance of chloroplasts lacking grana or containing only infrequent grana, and stromal thylakoids. In the upper leaves of 22-day-old cucumber plants, the chloroplast structure was essentially similar to that of the control chloroplasts in white light, and we therefore suppose that these plants have acclimated to red light.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gaevskii N.A., Kolmakov V.I., Popel'nitskii V.A., Gold V.M., Dubovskaya O.P.
Заглавие : Evaluation of the effect of light intensity on the measurement of the photosynthetic rate in plankton microalgae by the chlorophyll fluorescence method
Колич.характеристики :6 с
Место публикации : Russ. J. Plant Physiol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2000. - Vol. 47, Is. 6. - P820-825. - ISSN 1021-4437, DOI 10.1023/A:1026671531500
Примечания : Cited References: 21
Предметные рубрики: QUANTUM YIELDS
PHYTOPLANKTON
CHLOROPLASTS
ALGAE
Ключевые слова (''Своб.индексиров.''): fluorescence--chlorophyll--microalgae--photosynthetic rate--photosynthetic activity
Аннотация: The use of relative variable fluorescence (RVF) of chlorophyll, as measured in the presence of Diuron, an inhibitor of electron transfer, for the estimation of the photosynthetic activity of plankton microalgae was analyzed under a wide range of light intensities in the PAR region. Oxygen evolution rates (estimated by the method of light and dark bottles and the amperometric method), RVF, and chlorophyll a concentration were measured in parallel in natural algal cenoses and microecosystems. When the previously used regression equation, in the form A = b(DeltaF/F-d)CchlI, where A is O-2 evolution rate (g/(m(3) h), DeltaF/F-d is RVF (relative units), C-chl is chlorophyll a concentration (mg/m(3)), and I is light intensity (W/m(2)), was verified in the PAR region, we observed a nonlinear dependence of the correction coefficient b on I, which can be described by the formula b = 6.227 x 10(3)rootI. This result agrees with the hypothesis that chlorophyll a fluorescence quenching comprises photochemical (qQ) and energy (qE) components. On the basis of the energy model, we determined the upper limit b(max) = 0.003 for light intensity range I 4.4 W/m(2) and the lower limit b(min)
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Emelianova A.Y., Kalachova G.S., Zotina T.A., Gaevsky N.A., Zhilenkov M.D.
Заглавие : Gut content analysis of Gammarus lacustris from a Siberian lake using biochemical and biophysical methods
Место публикации : Hydrobiologia. - 2000. - Vol. 431, Is. 2-3. - С. 155-163. - ISSN 00188158 (ISSN)
Ключевые слова (''Своб.индексиров.''): chlorophyll fluorescence--fatty acid composition--viable gut passage--crustacean--diet--saline lake--seston--stomach content--russian federation
Аннотация: We studied the gut contents of Gammarus lacustris from the littoral of Shira lake, a Siberian salt lake, by microscopic analysis in conjunction with measuring of fluorescence of chlorophyll and composition of fatty acids. Gammarus ingested primarily fresh seston, probably settled on the bottom. Additionally, the amphipods obtained essential polyunsaturated fatty acids of ?3 family by selectively consuming bottom sediment particles. A considerable part of the ingested seston comprised cells of Botryococcus sp., which passed the intestinal tract in living form and their photosynthetic activity increased. This viable gut passage was likely one of the causes of bloom of Botryococcus in the littoral. Unlike a number of literature data, there was no selective digestion of any fatty acid species, including polyunsaturated acids, in the intestinal tract.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhomirov A.A., Lisovskii G.M.
Заглавие : The levels of organization of the photosynthetic apparatus and the control of production processes in phytocenoses under artificial-light culture
Место публикации : Russian Journal of Plant Physiology. - 2001. - Vol. 48, Is. 3. - С. 395-399. - ISSN 10214437 (ISSN) , DOI 10.1023/A:1016682904411
Ключевые слова (''Своб.индексиров.''): artificial-light culture--photosynthetic apparatus--phytocenosis--productivity--embryophyta
Аннотация: The processes limiting the production in higher plant phytocenoses under an artificial-light culture are analyzed in relation to the multilevel organization of the photosynthetic apparatus (PA). The authors consider the feasibility of overcoming these limitations by optimizing the physical parameters of irradiation (the structure of the light spectrum, the rate, and the ratio of radiation fluxes in photosynthetically active radiation (PAR) and infrared (IR) regions) at the molecular, leaf, plant, and cenotic levels of PA organization. To illustrate this approach, the authors used a complex experiment in an artificial ecosystem to evaluate the efficiency of the light control of production processes in multispecies phytocenoses by alleviating or removing the factors that limit plant production at the various levels of PA organization. An artificial-light culture is seen as an instrument for solving several problems of theoretical and applied plant physiology and related disciplines in the future.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhomirov A.A., Lisovskii G.M.
Заглавие : The levels of organization of the photosynthetic apparatus and the control of production processes in phytocenoses under artificial-light culture
Колич.характеристики :5 с
Место публикации : Russ. J. Plant Physiol.: MAIK NAUKA/INTERPERIODICA, 2001. - Vol. 48, Is. 3. - P395-399. - ISSN 1021-4437, DOI 10.1023/A:1016682904411
Примечания : Cited References: 21
Ключевые слова (''Своб.индексиров.''): photosynthetic apparatus--phytocenosis--productivity--artificial-light culture
Аннотация: The processes limiting the production in higher plant phytocenoses under an artificial-light culture are analyzed in relation to the multilevel organization of the photosynthetic apparatus (PA). The authors consider the feasibility of overcoming these limitations by optimizing the physical parameters of irradiation (the structure of the light spectrum, the rate, and the ratio of radiation fluxes in photosynthetically active radiation (PAR) and infrared (IR) regions) at the molecular, leaf, plant, and cenotic levels of PA organization. To illustrate this approach, the authors used a complex experiment in an artificial ecosystem to evaluate the efficiency of the light control of production processes in multispecies phytocenoses by alleviating or removing the factors that limit plant production at the various levels of PA organization. An artificial-light culture is seen as an instrument for solving several problems of theoretical and applied plant physiology and related disciplines in the future.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ushakova S.A., Tikhomirov A.A.
Заглавие : Tolerance of LSS plant component to elevated temperatures
Место публикации : Acta Astronautica. - 2002. - Vol. 50, Is. 12. - С. 759-764. - ISSN 00945765 (ISSN) , DOI 10.1016/S0094-5765(02)00010-3
Ключевые слова (''Своб.индексиров.''): metabolism--photosynthesis--rate constants--thermal effects--thermoanalysis--thermal tolerance--life support systems (spacecraft)--carbon dioxide--adaptation--article--brassicaceae--comparative study--heat--instrumentation--light--metabolism--microclimate--photosynthesis--physiology--plant physiology--wheat--adaptation, physiological--brassicaceae--carbon dioxide--ecological systems, closed--heat--life support systems--light--photosynthesis--plant physiology--triticum
Аннотация: Stability of LSS based on biological regeneration of water, air and food subject to damaging factors is largely dependent on the behavior of the photosynthesizing component represented, mainly, by higher plants. The purpose of this study is to evaluate the tolerance of uneven-aged wheat and radish cenoses to temperature effects different in time and value. Estimation of thermal tolerance of plants demonstrated that exposure for 20 h to the temperature increasing to 45В°C brought about irreversible damage both in photosynthetic processes (up to 80% of initial value) and the processes of growth and development. Kinetics of visible photosynthesis during exposure to elevated temperatures can be used to evaluate critical exposure time within the range of which the damage of metabolic processes is reversible. With varying light intensity and air temperature it is possible to find a time period admissible for the plants to stay under adverse conditions without considerable damage of metabolic processes. В© 2002 Elsevier Science Ltd. All rights reserved.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Soukhovolsky V.G., Fomina I.R., Bil K., Nishio J.N., Khlebopros R.G.
Заглавие : An optimization model of the photosynthetic leaf: the model of optimal photosynthetic CO2 fixation within leaves of mesophytic C3 plants.
Место публикации : Doklady Biological Sciences. - 2002. - Vol. 382. - С. 28-30. - ISSN 00124966 (ISSN)
Ключевые слова (''Своб.индексиров.''): carbon dioxide--ribulosebisphosphate carboxylase--article--biological model--ecosystem--light--metabolism--photosynthesis--plant leaf--radiation exposure--carbon dioxide--ecosystem--light--models, biological--photosynthesis--plant leaves--ribulose-bisphosphate carboxylase
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ushakova S.A., Tikhomirov A.A.
Заглавие : Tolerance of LSS plant component to elevated temperatures
Колич.характеристики :6 с
Место публикации : Acta Astronaut.: PERGAMON-ELSEVIER SCIENCE LTD, 2002. - Vol. 50, Is. 12. - P759-764. - ISSN 0094-5765, DOI 10.1016/S0094-5765(02)00010-3
Примечания : Cited References: 10
Аннотация: Stability of LSS based on biological regeneration of water, air and food subject to damaging factors is largely dependent on the behavior of the photosynthesizing component represented, mainly, by higher plants. The purpose of this study is to evaluate the tolerance of uneven-aged wheat and radish cenoses to temperature effects different in time and value. Estimation of thermal tolerance of plants demonstrated that exposure for 20 h to the temperature increasing to 45degreesC brought about irreversible damage both in photosynthetic processes (up to 80% of initial value) and the processes of growth and development. Kinetics of visible photosynthesis during exposure to elevated temperatures can be used to evaluate critical exposure time within the range of which the damage of metabolic processes is reversible. With varying light intensity and air temperature it is possible to find a time period admissible for the plants to stay under adverse conditions without considerable damage of metabolic processes. (C) 2002 Elsevier Science Ltd. All rights reserved.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kolmakov V.I., Gladyshev M.I.
Заглавие : Growth and potential photosynthesis of cyanobacteria are stimulated by viable gut passage in crucian carp
Место публикации : Aquatic Ecology. - 2003. - Vol. 37, Is. 3. - С. 237-242. - ISSN 13862588 (ISSN) , DOI 10.1023/A:1025801326088
Ключевые слова (''Своб.индексиров.''): carassius auratus--cyanobacteria--gut passage--cyanobacterium--growth rate--photosynthesis--russian federation--anabaena--anabaena flos-aquae--aphanizomenon--aphanizomenon flos-aquae--carassius auratus--carassius carassius--cyanobacteria--cyprinus carpio--flos--microcystis--microcystis aeruginosa--planktothrix--planktothrix agardhii
Аннотация: Growth and potential photosynthetic activity of phytoplankton passed through intestine of crucian carp (Carassius auratus) from a small Siberian reservoir were compared with those of phytoplankton taken the directly from the reservoir. The dominant phytoplankton species in the reservoir, Microcystis aeruginosa, showed a significant increase of growth after the passage. Subdominant Planktothrix agardhii also showed an increase in growth rate, while subdominants Anabaena flos-aquae and Aphanizomenon flos-aquae were not stimulated by the gut passage.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kolmakov V.I., Gladyshev M.I.
Заглавие : Growth and potential photosynthesis of cyanobacteria are stimulated by viable gut passage in crucian carp
Колич.характеристики :6 с
Место публикации : Aquat. Ecol.: KLUWER ACADEMIC PUBL, 2003. - Vol. 37, Is. 3. - P237-242. - ISSN 1386-2588, DOI 10.1023/A:1025801326088
Примечания : Cited References: 28
Предметные рубрики: FISH
LAKE
BIOMANIPULATION
FOOD
ROACH
RESTORATION
COMMUNITIES
ZOOPLANKTON
MECHANISMS
ALGAE
Ключевые слова (''Своб.индексиров.''): carassius auratus--cyanobacteria--gut passage
Аннотация: Growth and potential photosynthetic activity of phytoplankton passed through intestine of crucian carp (Carassius auratus) from a small Siberian reservoir were compared with those of phytoplankton taken the directly from the reservoir. The dominant phytoplankton species in the reservoir, Microcystis aeruginosa, showed a significant increase of growth after the passage. Subdominant Planktothrix agardhii also showed an increase in growth rate, while subdominants Anabaena flos-aquae and Aphanizomenon flos-aquae were not stimulated by the gut passage.
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16.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Gros J.B., Poughon L..., Lasseur C..., Tikhomirov A.A.
Заглавие : Recycling efficiencies of C,H,O,N,S, and P elements in a biological life support system based on microorganisms and higher plants
Колич.характеристики :5 с
Место публикации : SPACE LIFE SCIENCES: MISSIONS TO MARS, RADIATION BIOLOGY, AND PLANTS AS A FOUNDATION FOR LONG-TERM LIFE SUPPORT SYSTEMS IN SPACE. Ser. ADVANCES IN SPACE RESEARCH: PERGAMON-ELSEVIER SCIENCE LTD, 2003. - Vol. 31: F0 1 and F1 3-F2 3 Symposia of COSPAR Scientific Commission F held at the 33rd COSPAR Scientific Assembly (JUL, 2000, WARSAW, POLAND), Is. 1. - P195-199. - ISBN 0273-1177, DOI 10.1016/S0273-1177(02)00739-1
Примечания : Cited References: 10
Аннотация: MELiSSA is a microorganism based artificial ecosystem conceived as a tool for understanding the behavior of ecosystems and developing the technology for future Manned Space Missions. MELiSSA is composed of four compartments colonized by the microorganisms required by the function of this ecosystem : breakdown of waste produced by men, regeneration of atmosphere and biosynthesis of edible biomass. This paper reports the mass balance description of a Biological Life Support System composed of the MELiSSA loop and of a Higher Plant Compartment working in parallel with the photosynthetic Spirulina compartment producing edible biomass. The recycling efficiencies of the system are determined and compared for various working conditions of the MELiSSA loop with or without the HPC. (C) 2002 Published by Elsevier Science Ltd on behalf of COSPAR.
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gros J.B., Poughon L., Lasseur C., Tikhomirov A.A.
Заглавие : Recycling efficiencies of C,H,O,N,S, and P elements in a biological life support system based on micro-organisms and higher plants
Место публикации : Advances in Space Research. - 2003. - Vol. 31, Is. 1. - С. 195-199. - ISSN 02731177 (ISSN) , DOI 10.1016/S0273-1177(02)00739-1
Ключевые слова (''Своб.индексиров.''): biomass--biosynthesis--chemical elements--earth atmosphere--ecosystems--life support systems (spacecraft)--manned space flight--microorganisms--plants (botany)--wastes--compartments--space research--carbon--carbon dioxide--hydrogen--nitrogen--oxygen--phosphorus--sulfur--space technology--article--biological model--biomass--chemistry--comparative study--computer simulation--growth, development and aging--metabolism--methodology--microbiology--microclimate--plant--waste management--biomass--carbon--carbon dioxide--computer simulation--ecological systems, closed--environmental microbiology--hydrogen--life support systems--models, biological--nitrogen--oxygen--phosphorus--plants, edible--sulfur--waste management
Аннотация: MELiSSA is a microorganism based artificial ecosystem conceived as a tool for understanding the behavior of ecosystems and developing the technology for future Manned Space Missions. MELiSSA is composed of four compartments colonized by the microorganisms required by the function of this ecosystem : breakdown of waste produced by men, regeneration of atmosphere and biosynthesis of edible biomass. This paper reports the mass balance description of a Biological Life Support System composed of the MELiSSA loop and of a Higher Plant Compartment working in parallel with the photosynthetic Spirulina compartment producing edible biomass. The recycling efficiencies of the system are determined and compared for various working conditions of the MELiSSA loop with or without the HPC. В© 2002 Published by Elsevier Science Ltd on behalf of COSPAR.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nesterenko T.V., Tikhomirov A.A.
Заглавие : An ontogenetic approach to the assessment of plant resistance to stress factors based on the method of chlorophyll fluorescence induction.
Место публикации : Doklady. Biochemistry and biophysics. - 2003. - Vol. 388. - С. 4-7. - ISSN 16076729 (ISSN)
Ключевые слова (''Своб.индексиров.''): chlorophyll--adaptation--aging--article--comparative study--cucumber--light--metabolism--methodology--photostimulation--photosynthesis--physiology--plant leaf--radiation dose--radiation exposure--spectrofluorometry--adaptation, physiological--aging--chlorophyll--cucumis sativus--light--photic stimulation--photosynthetic reaction center complex proteins--plant leaves--radiation dosage--spectrometry, fluorescence
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19.

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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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sid'ko A.F.
Заглавие : Remote assay for chlorophyll photosynthetic potential of crops on the example of wheat
Колич.характеристики :7 с
Место публикации : Biol. Bull: MAIK NAUKA/INTERPERIODICA, 2004. - Vol. 31, Is. 5. - P450-456. - ISSN 1062-3590, DOI 10.1023/B:BIBU.0000043769.80086.02
Примечания : Cited References: 20
Аннотация: An optical remote assay for biological production of crops in the field during the vegetation period is proposed. Our calculations demonstrate a good correlation between the S(t) value and crop yield (in the range from 0.85 to 0.90); the higher is S(t) for the vegetation period, the higher is the crop yield. S(t) value can be used to calculate the increase in dry and wet biomass for various crops during the whole vegetation period with an error of less than 10-12%. The absolute error of crop yield for 110 cultivars of wheat, oats, and barley during the experimental period was +/-3-3.5 quintal/ha with the mean crop yield of 14-38 quintal/ha.
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