The relationships of hardening period and the expression of frost resistance in chromosome substitution lines of wheat |
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Authors: | O Veisz J Sutka |
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Institution: | (1) Agricultural Research Institute of the Hungarian Academy of Sciences, 2462 Martonvásár, Hungary |
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Abstract: | Summary The highly frost resistant wheat variety Cheyenne (donor) and the poorly frost resistant variety Chinese Spring (recipient) were frozen at –9° C and –11° C at various stages of hardening, as were a number of substitution lines of these two varieties (CS/Ch 3A, CS/Ch 5A, CS/Ch 7A, CS/Ch 2B, CS/Ch 4B, CS/Ch 5B, CS/Ch 4D, CS/Ch 5D). Chromosomes 5A, 5B, 5D, 4B and 7A of Cheyenne increased the frost resistance of the recipient variety to varying extents. However, the frost resistance changed not only as a function of the different chromosomes, but also as a function of the duration of hardening, indicating that genes responsible for frost resistance are expressed differently during different phases of the hardening process. |
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Keywords: | Triticum aestivum wheat chromosome substitution frost resistance hardening |
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