Unlocking Spanish pear genetic diversity: strategies for construction of a national core collection.

ABSTRACT: Spanish pear germplasm collections are crucial for preservation, research, and breeding efforts. However, genetic diversity and structure is unknown at national level. A coordinated national project analyzed 1251 accessions from 7 Spanish pear collections using an internationally recognized set of 14 SSRs to enhance the utilization of these collections. Key findings included the identification of 760 unique genotypes (490 diploids and 270 triploids). Notably, genotypes represented by a single accession accounted for 49% of the total, indicating high vulnerability of this material. Using a Bayesian clustering method revealed two main genetic groups, G1 containing most foreign cultivars and G2 retaining local Spanish cultivars, which were further divided into two other subgroups using a nest

SUBMITTER: Irisarri P 

PROVIDER: S-EPMC11532559 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature