POLYMORPHISM FOR THE MD-EXP-7 GENE FOR EXPANSIN BIOSYNTHESIS IN WILD SPECIES OF THE GENUS MALUS MILL

Abstract

Molecular analysis revealed polymorphism for the MD-Exp7 gene, controlling expansin biosynthesis, in wild Malus species. Eight allelic forms of the gene were identified, and four of them were unique. The regularities in the allele distribution in 37 genotypes were found to be in accordance with their systematic positions. The trait was found to be broadly diverse both among the sections of the genus and within a particular section. Variants of the gene were identified in representatives of one species.

Keywords

• wild apple species
• pcr test
• allelic diversity
• md-exp7 gene
• fruit storability