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  • 1
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    “Space” Pea Pisum sativum L. and Wheat Triticum compactum Host. Plants as Objects of Cytogenetic Studies (2018)
    Springer
    Details
    Publication Date: 2018-11-01
    Print ISSN: 1062-3590
    Electronic ISSN: 1608-3059
    Topics: Biology
    Published by Springer
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    PAPER CURRENT
  • 2
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    [Some peculiar features of liquid supply to the root medium of plants growing in microgravity] (1998)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: Sixteen point probes monitored moisture level in the root medium of the wheat plants grown in greenhouse SVET on the MIR/NASA space science program. The article outlines types of water migration in the absence of gravity. Hydrophysical characteristics of perspective root media have been explored. Results of the water supply monitoring and control in the course of experiment are reported. The authors put forward porous root media to facilitate water migration and aeration.
    Keywords: Life Sciences (General)
    Type: Aviakosmicheskaia i ekologicheskaia meditsina = Aerospace and environmental medicine (ISSN 0233-528X); Volume 32; 2; 36-43
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  • 3
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    [Cytoembryologic studies of super dwarf wheat grown in "Svet" greenhouse in the ground-based experiments] (1998)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: The Project of scientific programs MIR/SHUTTLE and MIR/NASA was allowed for studying the productional, cytoembryological, morphological, biomechanical and other characteristics of superclub wheat on cultivation in the Svet greenhouse on-board orbital complex. This work was aimed at studying the duration of the complete cycle of ontogenesis of wheat and its individual stages, the peculiarities of forming the reproductive organs, processes, fertilization and formation of the seed production while cultivating in the Svet greenhouse under terrestrial conditions. Superclub wheat has been the object of experimentation. On cultivation of superclub wheat in the Svet greenhouse at designated conditions it was found that the cycle duration "from seed to seed" was 90-97 days. The number of granules in the wheat-ears studied was quite low and ranged from 15 to 30%. Performed studies with applying the light microscopy have indicated that in superclub wheat the embryological processes occur in compliance with those regularities which are described for the other forms of soft wheat.
    Keywords: Life Sciences (General)
    Type: Aviakosmicheskaia i ekologicheskaia meditsina = Aerospace and environmental medicine (ISSN 0233-528X); Volume 32; 4; 37-43
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  • 4
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    [Evaluation of super dwarf wheat growth and development in greenhouse "Svet" during cultivation in inhabited pressurized chamber] (1998)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: Goals of the 3-month experiment GREENHOUSE using the equipment of greenhouse SVET (ECO-PSY-95) were to feature growth and development of wheat through the entire cycle of ontogeny under the maximally mimicked MIR environment, and to try out the procedures and timeline of space experiment GREENHOUSE-2 as a part of the fundamental biology investigations within the MIR/NASA space science program. Irradiation intensity (PAR) was 65 W/m2 and 38 W/m2 in the experiment and laboratory control, respectively. Values of other environmental parameters were MIR average (18-25 degrees C, relative air humidity in the interval between 40% and 75%, total gas pressure of about 660 to 860 mm Hg, partial oxygen pressure within the range from 140 to 200 mm Hg, partial carbon dioxide pressure up to 7 mm Hg). Experimental results showed that wheat cultivation in inhabited chamber under a modified lighting unit providing greater irradiation of the crop area produced more plant mass although seed production dropped. Low grain content in ears could be the aftermath of the gaseous trace contaminants in the chamber atmosphere.
    Keywords: Meteorology and Climatology
    Type: Aviakosmicheskaia i ekologicheskaia meditsina = Aerospace and environmental medicine (ISSN 0233-528X); Volume 32; 2; 43-8
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  • 5
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    [Cyto-embryologic investigation of super dwarf wheat grown on board of the Mir orbital complex] (1999)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: The cytoembryologic analysis of wet and dry samples of super dwarf wheat cultivated in greenhouse SVET aboard the MIR station over the whole cycle of vegetation was made with the use of light microscopy. Characteristic features of wheat development in space flight are plentiful early tillering, and formation and rapid growth of side shoots. Elementary spikelets in the composite head were more numerous but the top spikelets were rudimentary and, therefore, the ripe head contained less of these spikelets as compared with the ground controls (9-13 and 14, respectively). The number of florets in a spike was also higher reaching 14-16 vs. 7-8 in the control. Typically, no more than 4 to 5 florets vs. 3 in the control were fully differentiated while the others died off earlier in development. The fact that there were no caryopses found in the flight crop is explained by absolute male sterility appearing at different stages of staminal development: before archesporium formation, on the stage of differentiated archesporium, during meiosis, on the stage of microspores or uninucleate "pollen". The female generative system developed mainly without abnormalities. An assumption was made that elevated ethylene concentrations in the MIR atmosphere at the time of the wheat experiment were the cause for abnormal development of the male generative system which led to barrenness of the super dwarf wheat crop.
    Keywords: Life Sciences (General)
    Type: Aviakosmicheskaia i ekologicheskaia meditsina = Aerospace and environmental medicine (ISSN 0233-528X); Volume 33; 2; 30-7
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  • 6
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    [The influence of space flight factors on the growth and development of super dwarf wheat cultivated in greenhouse Svet] (1999)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: In 1996-1997 an experiment with super dwarf wheat (Greenhouse-2) was made aboard the orbital complex MIR as a part of the MIR-NASA space science program. The article deals with the main production and morphometric characteristics of plants that completed their vegetation cycle in the space flight. Lengths of the whole cycle of vegetation and its individual stages were essentially same as in ground control experiments. Dry mass of one plants equal, the number of headed shoots was in 2.7 times less in the flight harvest as compared with the control. The height of shoots was reduced by one half. No seeds were found in the heads formed in space. The architecture of heads was substantially different from what had been observed in the preceeding ground control experiments: mass of the heads was halved and lengths of inflorescence and palea awn shortened. The number of spikelets in a head reduced up to 8-10 vs. 13-14 in the controls, whereas the number of florets per a spikelet averaged 5 vs. 3 in the controls. The experiments showed that mainly the most profound changes in the productive and morphometric parameters of the super dwarf wheat plants were largely caused by the phytotoxic effects of ethylene rather than spaceflight specific factors as its concentrations in the MIR air amount to 0.3-1.8 mg/m3.
    Keywords: Meteorology and Climatology
    Type: Aviakosmicheskaia i ekologicheskaia meditsina = Aerospace and environmental medicine (ISSN 0233-528X); Volume 33; 2; 37-41
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  • 7
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    [Growth of wheat from seed-to-seed in space flight] (2000)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: In our earlier space experiment with super dwarf wheat we found the spikes developed in space to be barren. The cause of the full crop sterility was sensitivity of this wheat species to the ethylene concentration of 0.3-0.8 mg/m3 during the experiment. The follow-up ground experiments were made to identify species of dwarf wheat that could be raised in space greenhouse Svet and are distinguished by partial tolerance of their reproductive organs to elevated ethylene in air. The choice fell on the USU-Apogee cultivar specially developed for planting in growth chambers as an integral part of various bioregenerative life support systems, including the space ones. An experiment with wheat Apogee was performed in greenhouse Svet on board MIR. The period of the full crop vegetation cycle was not significantly altered under the spaceflight conditions. The experiment yielded 508 seeds from 12 plants, i.e. by 38% less than in laboratory experiments and by 69% more as compared with results of growing crops in ethylene-contaminated atmosphere (1 mg/m3). Mass of the space seeds was low if compared with the laboratory crops. This was the first time when the feasibility of gathering seeds from wheat that had passed the whole vegetation cycle in space flight was demonstrated. The experiment will give mightly impetus to the advancement of research on space biological LSS and gravitational biology.
    Keywords: Life Sciences (General)
    Type: Aviakosmicheskaia i ekologicheskaia meditsina = Aerospace and environmental medicine (ISSN 0233-528X); Volume 34; 4; 44-9
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  • 8
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    [Characteristics of super dwarf wheat metabolism in microgravity] (2000)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: Metabolism of sLt during Russian-US experiment GREENHOUSE-2 (July 9, 1996-January 17, 1997) within the MIR/NASA space research program and in laboratory Svet experiments in 1995-1996 was studied. Chemical, biochemical and pigment analyses of the flight and laboratory plants were made after the first (dry biomass) and second vegetation (photosynthetically active 41-d old plants). Data on the composition of leaves and stems of ground and flight wheat do not attest any biologically significant shifts in plant metabolism. There were slight changes in accumulation and migration of several macro- and microelements, protein nitrogen and phosphororganic compounds in microgravity. Lowered content of lignin, a critical supportive element for cellular walls was observed only during early stages of vegetation. In the Mir experiment, concentrations of photosynthetically active pigments also decreased a little but the chlorophyills-carotenoids balance was not upset.
    Keywords: Life Sciences (General)
    Type: Aviakosmicheskaia i ekologicheskaia meditsina = Aerospace and environmental medicine (ISSN 0233-528X); Volume 34; 6; 30-5
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  • 9
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    Six-month space greenhouse experiments--a step to creation of future biological life support systems (1998)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: SVET Space Greenhouse (SG)--the first automated facility for growing of higher plants in microgravity was designed in the eighty years to be used for the future BLSS. The first successful experiment with vegetables was carried out in 1990 on the MIR Space Station (SS). The experiments in SVET SG were resumed in 1995, when an American Gas Exchange Measurement System (GEMS) was added. A three-month wheat experiment was carried out as part of MIR-SHUTTLE'95 program. SVET-2 SG Bulgarian equipment of a new generation with optimised characteristics was developed (financed by NASA). The new SVET-GEMS equipment was launched on board the MIR SS and a successful six-month experiments for growing up of two crops of wheat were conducted in 1996 - 97 as part of MIR-NASA-3 program. The first of these "Greenhouse" experiments (123 days) with the goal to grow wheat through a complete life cycle is described. Nearly 300 heads developed but no seeds were produced. A second crop of wheat was planted and after 42 days the plants were frozen for biochemical investigations. The main environmental parameters during the six-month experiments in SVET (substrate moisture and lighting period) are given. The results and the contribution to BLSS are discussed.
    Keywords: Man/System Technology and Life Support
    Type: Acta astronautica (ISSN 0094-5765); Volume 42; 1-8; 11-23
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  • 10
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    [Growth and development of plants in a sequence of generations under the conditions of space flight (experiment Greenhouse-3)] (2001)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: The purpose was to study characteristic features of growth and development of several plant generations in space flight in experiment GREENHOUSE-3 as a part of the Russian-US space research program MIR/NASA in 1997. The experiment consisted of cultivation of Brassica rapa L. in board greenhouse Svet. Two vegetative cycles were fully completed and the third vegetation was terminated on day 13 on the phase of budding. The total duration of the space experiment was 122 days, i.e. same as in the ground controls. In the experiment with Brassica rapa L. viable seeds produced by the first crop were planted in space flight and yielded next crop. Crops raised from the ground and space seeds were found to differ in height and number of buds. Both parameters were lowered in the plants grown from the space seeds. The prime course for smaller size and reduced organogenic potential of plantTs reproductive system seems to be a less content of nutrients in seeds that had matured in the space flight. Experiment GREENHOUSE-3 demonstrated principle feasibility of plant reproduction in space greenhouse from seeds developed in microgravity.
    Keywords: Life Sciences (General)
    Type: Aviakosmicheskaia i ekologicheskaia meditsina = Aerospace and environmental medicine (ISSN 0233-528X); Volume 35; 3; 43-8
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