Abstract
Loquat (Eriobotrya japonica (Thunb.) Lindl.) is a minor Rosaceae fruit of growing interest as an alternative to the main fruit crops. In this context, the selection of new cultivars to satisfy the market demand will request the suitable characterization of the available germplasm. In this work, genetic relationships among 83 loquat accessions from different countries belonging to the European loquat germplasm collection, held at the Instituto Valenciano de Investigaciones Agrarias (IVIA) in Moncada (Spain) were evaluated using microsatellites and S-allele fragments. A total of nine single sequence repeats (SSRs) from Malus and Eriobotrya genera revealed 53 informative alleles and the S-RNases consensus primers detected 11 self-incompatibility putative alleles. The combined data allow to distinguish unambiguously 80 out of the 83 accessions studied. Unweighted pair-group method (UPGMA) cluster and principal coordinates analysis (PCoA), based on Dice’s genetic distance, generally grouped genotypes according to their geographic origins and pedigrees. Discrepancies and similarities of the results obtained with other variability analysis, based on pomological traits or molecular markers, on the same loquat collection are discussed.
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Acknowledgements
The IVIA germplasm collection is funded by a grant from the Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA RF2004-017) and this work was also partly supported by the growers association from Callosa d’en Sarrià (Alicante, Spain). A.D.G. was funded by a fellowship from the IVIA. All the experiments described in this paper comply with the current laws of Spain.
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Gisbert, A.D., Romero, C., Martínez-Calvo, J. et al. Genetic diversity evaluation of a loquat (Eriobotrya japonica (Thunb) Lindl) germplasm collection by SSRs and S-allele fragments. Euphytica 168, 121–134 (2009). https://doi.org/10.1007/s10681-009-9901-z
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DOI: https://doi.org/10.1007/s10681-009-9901-z