Phenotypic, Genetic, and Epigenetic Variation among Diverse Sweet Cherry Gene Pools
2021
Avramidou, Evangelia V. | Moysiadis, Theodoros | Ganopoulos, Ioannis | Michailidis, Michail | Kissoudis, Christos | Valasiadis, Dimitrios | Kazantzis, Konstantinos | Tsaroucha, Eirini | Tsaftaris, Athanasios | Molassiotis, Athanassios | Aravanopoulos, Filippos A. | Xanthopoulou, Aliki
Sweet cherry germplasm contains a high variety of phenotypes which are associated with fruit size and shape as well as sugar content, etc. High phenotypic variation can be a result of genetic or epigenetic diversity that may interact through time. Recent studies have provided evidence that besides allelic variation, epiallelic variation can establish new heritable phenotypes. Herein we conducted a genetic and an epigenetic study (using amplified fragment length polymorphism (AFLP) and methylation-sensitive amplified polymorphism (MSAP) markers, respectively), accompanied by phenotypic traits correlation analysis in sweet cherry gene pools. The mean genetic diversity was greater than the epigenetic diversity (hgₑₙ = 0.193; hₑₚᵢ = 0.185), while no significant relationship was found between genetic and epigenetic distance according to a Mantel test. Furthermore, according to correlation analyses our results provided evidence that epigenetic diversity in predefined populations of sweet cherry had a stronger impact on phenotypic traits than their rich genetic diversity.
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