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Comparison of Resistance to Water Stress of Two Wheat Cultivars
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SYSNO ASEP 0172254 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Comparison of Resistance to Water Stress of Two Wheat Cultivars Author(s) Procházková, Dagmar (UEB-Q) RID
Wilhelmová, Naděžda (UEB-Q) RID, ORCIDSource Title Polska Akademia Nauk. Wydzial Nauk Rolniczych i Lesnych. Zeszyty Problemowe Postepow Nauk Rolniczych. Phytopathologia Polonica - ISSN 1230-0810
Roč. 481, - (2002), s. 217-221Number of pages 5 s. Language eng - English Country PL - Poland Keywords drought ; antioxidative enzymes ; Triticum aestivum L. Subject RIV GE - Plant Breeding R&D Projects GA522/01/0846 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z5038910 - UEB-Q Annotation Leaf senescence is an organized developmental program. Role for active oxygen species including superoxide, hydrogen peroxide, hydroxyl free radicals and singlet oxygen have been proposed in senescence [THOMPSON et al. 1987]. Presence of these reactive oxygen species leads to oxidative damage in cellular molecules, such as proteins, lipids and nucleic acids. At the cellular level, organelles are disassembled in a precise hierarchy. Chloroplasts are the first to be affected during the senescence program while the nucleus and mitochondria are last [QUIRING et al. 1999]. Plant cells are protected normally against the destruction effects of reactive oxygen species by a complex of enzymatic and nonenzymatic mechanisms: superoxide dismutase, ascorbate peroxidase, catalase, glutathione reductase, tocopherol, beta-carotene and ascorbate form antioxidative defence. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2003
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