Genetic diversity in two Italian almond collections

Background Sweet-seeded domesticated almonds were brought to the Mediterranean Basin from central Asia about 4000 years ago. In Italy, most of the almonds produced are cultivated in the southern part of the country. Local populations of the tree in Sardinia are largely seed-derived and mostly self-i...

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Autores principales:	Rigoldi,Maria Pia, Rapposelli,Emma, De Giorgio,Donato, Resta,Paolo, Porceddu,Andrea
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2015
Materias:	Biodiversity Genetic structure Prunus amygdalus SSR
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000100008
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spelling	oai:scielo:S0717-345820150001000082015-03-09Genetic diversity in two Italian almond collectionsRigoldi,Maria PiaRapposelli,EmmaDe Giorgio,DonatoResta,PaoloPorceddu,Andrea Biodiversity Genetic structure Prunus amygdalus SSR Background Sweet-seeded domesticated almonds were brought to the Mediterranean Basin from central Asia about 4000 years ago. In Italy, most of the almonds produced are cultivated in the southern part of the country. Local populations of the tree in Sardinia are largely seed-derived and mostly self-incompatible, so have developed extensive genetic diversity. The need to protect biodiversity has prompted a revived interest in local genetic materials in almond. Two Italian collections have been established, one in Sardinia and the other in Apulia. These collections were the focus of the present evaluation of genetic diversity. Results Eleven SSRs (microsatellites) were used for fingerprinting. The Sardinian germplasm was highly polymorphic, revealing a mean of 14.5 alleles per locus and a mean heterozygosity of 0.71. Using a model-based clustering approach, two genetic clusters were distinguished: one included all the commercial varieties and most of the Sardinian accessions, and the other most of the Apulian accessions. A similar structure was produced using a distance-based cluster analysis. The Sardinian accessions could still be distinguished from the commercial germplasm with few exceptions. Conclusion The extensive genetic variability present in the Sardinian and Apulian almond germplasm indicates that these materials represent an important source of genes for the improvement of the crop.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.18 n.1 20152015-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000100008en10.1016/j.ejbt.2014.11.006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Biodiversity Genetic structure Prunus amygdalus SSR
spellingShingle	Biodiversity Genetic structure Prunus amygdalus SSR Rigoldi,Maria Pia Rapposelli,Emma De Giorgio,Donato Resta,Paolo Porceddu,Andrea Genetic diversity in two Italian almond collections
description	Background Sweet-seeded domesticated almonds were brought to the Mediterranean Basin from central Asia about 4000 years ago. In Italy, most of the almonds produced are cultivated in the southern part of the country. Local populations of the tree in Sardinia are largely seed-derived and mostly self-incompatible, so have developed extensive genetic diversity. The need to protect biodiversity has prompted a revived interest in local genetic materials in almond. Two Italian collections have been established, one in Sardinia and the other in Apulia. These collections were the focus of the present evaluation of genetic diversity. Results Eleven SSRs (microsatellites) were used for fingerprinting. The Sardinian germplasm was highly polymorphic, revealing a mean of 14.5 alleles per locus and a mean heterozygosity of 0.71. Using a model-based clustering approach, two genetic clusters were distinguished: one included all the commercial varieties and most of the Sardinian accessions, and the other most of the Apulian accessions. A similar structure was produced using a distance-based cluster analysis. The Sardinian accessions could still be distinguished from the commercial germplasm with few exceptions. Conclusion The extensive genetic variability present in the Sardinian and Apulian almond germplasm indicates that these materials represent an important source of genes for the improvement of the crop.
author	Rigoldi,Maria Pia Rapposelli,Emma De Giorgio,Donato Resta,Paolo Porceddu,Andrea
author_facet	Rigoldi,Maria Pia Rapposelli,Emma De Giorgio,Donato Resta,Paolo Porceddu,Andrea
author_sort	Rigoldi,Maria Pia
title	Genetic diversity in two Italian almond collections
title_short	Genetic diversity in two Italian almond collections
title_full	Genetic diversity in two Italian almond collections
title_fullStr	Genetic diversity in two Italian almond collections
title_full_unstemmed	Genetic diversity in two Italian almond collections
title_sort	genetic diversity in two italian almond collections
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000100008
work_keys_str_mv	AT rigoldimariapia geneticdiversityintwoitalianalmondcollections AT rapposelliemma geneticdiversityintwoitalianalmondcollections AT degiorgiodonato geneticdiversityintwoitalianalmondcollections AT restapaolo geneticdiversityintwoitalianalmondcollections AT porcedduandrea geneticdiversityintwoitalianalmondcollections
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Genetic diversity in two Italian almond collections

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