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полный	информационный	краткий

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Effects of mineral nutrition conditions on heat tolerance of chufa (Cyperus esculentus L.) plant communities to super optimal air temperatures in the BTLSS [Text] / E. S. Shklavtsova [et al.] // Adv. Space Res. - 2014. - Vol. 54, Is. 6. - P1135-1145, DOI 10.1016/j.asr.2014.05.031. - Cited References: 26. - The study was performed within the framework of the program of fundamental research for the Russian academies of sciences for 2013-2020, subject No. 56.1.4. . - ISSN 0273-1177. - ISSN 1879-1948

РУБ Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences
Рубрики:
LIFE-SUPPORT-SYSTEMS
   CHLOROPHYLL FLUORESCENCE
   STRESS
   WASTE
   WHEAT
   LSS
Кл.слова (ненормированные):
Bioregenerative life support system -- Cyperus esculentus L. -- Heat shock -- Mineralized human wastes -- Chlorophyll fluorescence -- Lipid peroxidation
Аннотация: The use of mineralized human wastes as a basis for nutrient solutions will increase the degree of material closure of bio-technical human life support systems. As stress tolerance of plants is determined, among other factors, by the conditions under which they have been grown before exposure to a stressor, the purpose of the study is to investigate the level of tolerance of chufa (Cyperus esculentus L.) plant communities grown in solutions based on mineralized human wastes to a damaging air temperature, 45 degrees C. Experiments were performed with 30-day-old chufa plant communities grown hydroponically, on expanded clay aggregate, under artificial light, at 690 mu mol m(-2) s(-1) PAR and at a temperature of 25 degrees C. Plants were grown in Knop's solution and solutions based on human wastes mineralized according to Yu.A. Kudenko's method, which contained nitrogen either as ammonium and urea or as nitrates. The heat shock treatment lasted 20 h at 690 and 1150 mu mol m(-2) s(-1) PAR. Chufa heat tolerance was evaluated based on parameters of CO2 gas exchange, the state of its photosynthetic apparatus (PSA), and intensity of peroxidation of leaf lipids. Chufa plants grown in the solutions based on mineralized human wastes that contained ammonium and urea had lower heat tolerance than plants grown in standard mineral solutions. Heat tolerance of the plants grown in the solutions based on mineralized human wastes that mainly contained nitrate nitrogen was insignificantly different from the heat tolerance of the plants grown in standard mineral solutions. A PAR intensity increase from 690 mu mol m(-2) s(-1) to 1150 mu mol m(-2) s(-1) enhanced heat tolerance of chufa plant communities, irrespective of the conditions of mineral nutrition under which they had been grown. (C) 2014 COSPAR. Published by Elsevier Ltd. All rights reserved.

WOS
Держатели документа:
[Shklavtsova, E. S.
Ushakova, S. A.
Shikhov, V. N.
Anishchenko, O. V.] SB RAS Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shklavtsova, E.S.; Ushakova, S.A.; Shikhov, V.N.; Anishchenko, O.V.; program of fundamental research for the Russian academies of sciences [56.1.4]

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