Detection of Norin 10 dwarfing genes in winter wheat varieties registered in the Czech Republic
J. Chrpová, M. Škorpík, P. Prášilová, V. Šíphttps://doi.org/10.17221/3725-CJGPBCitation:Chrpová J., Škorpík M., Prášilová P., Šíp V. (2003): Detection of Norin 10 dwarfing genes in winter wheat varieties registered in the Czech Republic. Czech J. Genet. Plant Breed., 39: 89-92.
Insensitivity to the applied gibberellic acid, indicating the presence of Norin 10 dwarfing genes, was detected in 20 of 57 (35.1%) winter wheat varieties registered in the Czech Republic in 2002. Hybrid analyses in F2 generation showed a prevalent occurrence of Rht2 gene (in 14 varieties). Only 6 varieties were found to carry Rht1 gene. Among the recently developed Rht2 varieties, Clever possesses also a high bread-making quality which was not observed with the older materials. Rht2 varieties were found, on average, less winter-hardy, later in heading and more resistant to lodging than Rht1 varieties.Keywords:
winter wheat; registered varieties; dwarfing (Rht) genes