A new S-allele in apple, 'Sg', and its similarity to the 'Sf' allele from 'Fuji'

Abstract

S-allele genotypes of nine apple (Malus xdomestica Borkh.) cultivars were identified using S-allele-specific polymerase chain reaction (PCR)-restriction fragment-length 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.