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Genetic diversity evaluation of a loquat (Eriobotrya japonica (Thunb) Lindl) germplasm collection by SSRs and S-allele fragments

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URI
http://hdl.handle.net/20.500.11939/5122
DOI
10.1007/s10681-009-9901-z
Derechos de acceso
openAccess
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Author
Gisbert, Ana D.; Romero, Carlos; Martínez-Calvo, JoséAutoridad IVIA; Leida, Carmen; Llácer, GerardoAutoridad IVIA; Badenes, María L.Autoridad IVIA
Date
2009
Cita bibliográfica
Gisbert, D. A., Romero, C., Martinez-Calvo, J., Leida, C., Llacer, G. & Badenes, M. L. (2009). Genetic diversity evaluation of a loquat (Eriobotrya japonica (Thunb), Lindl), germplasm collection by SSRs and S-allele fragments. Euphytica, 168(1), 121-134.
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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