Work

Inheritance analysis of sugar and organic acid components in blueberry hybrid progenies

Year: 2025

Type: article

Abstract: Sugar and acid are critical determinants of fruit flavor. To investigate the genetic principles of sugar and acid components in blueberry fruits, three varieties with distinct flavor profiles were pairwise crossed, resulting in three reciprocal crosses and six half-sib families. We determined sugar and acid components in all progeny and parents. The results showed that glucose and fructose were the major sugars, and citric acid and quinic acid were the major acids. The variation coefficient of the main acids was higher than that of the main sugars. Glucose and fructose exhibited similar inheritance patterns, characterized by cytoplasmic inheritance with a declining trend. Citric acid exhibited transgressive inheritance with a pronounced additive effect, whereas quinic acid demonstrated variable inheritance patterns due to significant differences in parental dominant acids. Additionally, the majority of the combined genetic models for glucose, fructose, and citric acid were found to be 2MG-AD, governed by two pairs of additive and dominant genes. The additive effect was observed to be more significant than the dominant effect. The heritability of major genes exhibited substantial variation across different parental combinations. This study not only established a foundation for parental selection in hybridization but also facilitated molecular marker-assisted breeding in blueberries.

Source: Scientia Horticulturae

DOI: 10.1016/j.scienta.2025.114345