A New S-allele in Apple, `Sg', and Its Similarity to the `Sf' Allele from `Fuji'

Abstract

S -allele genotypes of nine apple ( Malus × domestica Borkh.) cultivars were identified using S -allele–specific polymerase chain reaction (PCR)–restriction fragmentlength polymorphism (RFLP) analysis. A new S -allele, Sg , was proposed to be present in `American Summer Pearmain', `Indo', `Kitanosachi', and `Meku 10'. This allele is very similar to Sf at the nucleotide sequence (92%) and deduced amino acid sequence (94%) levels.