Two highly variable enzyme systems of glucosephosphate isomerase (GPI) and phosphoglucomutase (PGM) were used to investigate the parentages of grape cultivars. Of 35 parent/offspring combinations that we investigated, 30 combinations gave alleles in the offspring which were presented in the reported parents, whereas 5 combinations gave alleles in the offspring which were not extractable from the reported parents. The Gpi-2 genotype of 'Hiro Hamburg' and the Pgm-2 genotype of 'Pione' indicated that 'Koshu Sanjaku' and 'Cannon Hall Muscat' may not have been the paternal parent respectively. The Gpi-2 genotype of 'New Niagara' and the Gpi-2 and Pgm-2 genotypes of 'Beniyamabiko' indicated that 'Niagara' and a hybrid from 'DxK151' x 'Delaware' may not have been the maternal parent respectively. The Gpi-2 genotype of 'Cannon Hall Muscat' grown in Japan indicated that this cultivar may not have originated as a tetraploid sport of 'Muscat of Alexandria'.
All Science Journal Classification (ASJC) codes
- Agronomy and Crop Science
- Plant Science