Research advances in genetic quality of sugar content in apples

Abstract

Sugar content is a critical quality trait that determines the flavor of apple, glucose, fructose, and sucrose are the main sugar components. In this review, we outline the genetic basis of various sugar components in apples, including their metabolism and transportation rules. We also analyze the genetic linkage map construction and QTL mapping loci. This review will provide insights for future research of sugar content regulatory mechanisms and help accelerate the molecular marker-assisted breeding process of apple with moderate sweetness.

Keywords

• genetic quality
• sugar content
• qtl analysis
• apple