Elnura 32 dating
The amount and structure of genetic diversity in dessert apple germplasm conserved at a European level is mostly unknown, since all diversity studies conducted in Europe until now have been performed on regional or national collections.
Here, we applied a common set of 16 SSR markers to genotype more than 2,400 accessions across 14 collections representing three broad European geographic regions (North East, West and South) with the aim to analyze the extent, distribution and structure of variation in the apple genetic resources in Europe.
The cumulative probability of identity (P, thus highlighting the low risk of erroneous attribution of accessions to duplicate groups.
Redundancies were found both within and between collections, leading to the confirmation of numerous previously documented synonyms (e.g., ‘Papirovka’ and ‘White Transparent’, ‘London Pippin’ and ‘Calville du Roi’, or ‘Président van Dievoet’ and ‘Cabarette’) and allowing the putative identification of numerous unknown synonyms or mutant groups (e.g., ‘Gloria Mundi’ = ‘Mela Zamboni’ = ‘Audiena de Oroz’ = ‘Belle Louronnaise’, ‘Court-Pendu Plat/Doux/Gris’ = ‘Krátkostopka královská’, ‘Reinette de Champagne’ = ‘Maestro Sagarra’ or ‘Reinette Simirenko’ = ‘Renetta Walder’ = ‘Burdinche’).
The present work thus constitutes a decisive step in the field of conservation genetics.
The first level of stratification revealed an asymmetric division of the germplasm among the three groups, and a clear association was found with the geographical regions of origin of the cultivars.