NDLI: Evaluation of frost tolerance in winter wheat.

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Evaluation of frost tolerance in winter wheat.

Content Provider	CiteSeerX
Author	Petcu, Elena Hagima, Ioana Þerbea, Maria Ittu, Gheorghe
Abstract	Changes in membrane stability, free proline content and peroxidase isoenzyme expression, induced by low tem-peratures and exogenous ABA in some wheat genotypes, were investigated. Both low temperature and exogenous ABA induced larger increases in free proline content and stability of cell membranes in frost resistant wheat geno-types than in frost sensitive ones. Proline levels in hard-ened plants and in plants treated with ABA were correlated with frost tolerance, expressed as TL50. Low temperatures, more than ABA treatment, determined the increasing of peroxidase isoenzymes activity with medium and high mo-lecular weight. Genotype ranking for frost tolerance in hardened plants at low temperatures in controlled condi-tion was consisted with that recorded in ABA treated plants. Our results suggested that ABA pays an important role in the acclimatization process of wheat and indicated the possibility to use the treatment with ABA for frost tol-erance screening. Key words: ABA, free proline, frost tolerance, membrane sta-
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Subject Keyword	Frost Tolerance Winter Wheat Frost Tolerance Low Temperature Exogenous Aba Free Proline Content Important Role Frost Tol-erance Screening Cell Membrane Frost Resistant Wheat Geno-types Membrane Sta Low Tem-peratures Controlled Condi-tion Hardened Plant Peroxidase Isoenzyme Expression Free Proline Membrane Stability Proline Level Acclimatization Process Frost Sensitive One Aba Treatment Hard-ened Plant Peroxidase Isoenzymes Activity Wheat Genotype High Mo-lecular Weight
Content Type	Text

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