The relationships of hardening period and the expression of frost resistance in chromosome substitution lines of wheat

✍ Scribed by O. Veisz; J. Sutka

• Publisher: Springer
• Year: 1989
• Tongue: English
• Weight: 364 KB
• Volume: 43
• Category: Article
• ISSN: 0014-2336
• DOI: 10.1007/bf00037894

✦ Synopsis

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 .