title: The use of the isoenzymic marker gene Got-1 in the recognition of incompatibility S alleles in apple.
abstract: The S incompatibility system of apple was confirmed through the application of the gene Got-1 for glutamate oxaloacetate transaminase as a marker for the S locus. The 11S alleles proposed by Kobel et al. (1939) were confirmed through anomalous segregations for Got-1 observed in 14 semi-compatible crosses and regular segregations observed in 2 fully compatible crosses. The S allele genotypes of 'Idared' (S 3 S 7), 'Cox' (S 5 S 9) and 'Fiesta' (S 3 S 5) were determined and found to fall within the original series. By associating parental incompatibility genotypes with the segregation of Got-1 alleles, we were able to deduce the coupling of S and Got-1 alleles in 9 varieties.
authors.affiliation: Horticulture Research International East Malling, ME19 6BJ, Kent, UK.
authors.forename: I
authors.initials: I
authors.lastname: Batlle
authors.forename: F H
authors.initials: FH
authors.lastname: Alston
authors.forename: K M
authors.initials: KM
authors.lastname: Evans