The genetic diversity of Sardinian myrtle (Myrtus communis L.) populations

Background: The myrtle (Myrtus communis) is a common shrub widespread in the Mediterranean Basin. Its fruit and leaves exhibit antioxidant, antibacterial and antifungal properties, and are used for their content of essential oils and for their medicinal properties, but most commonly as an ingredient...

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Autores principales:	Melito,Sara, Chessa,Innocenza, Erre,Patrizia, Podani,János, Mulas,Maurizio
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2013
Materias:	domestication genetic structure germplasm ISSR genotyping
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000600007
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spelling	oai:scielo:S0717-345820130006000072014-01-16The genetic diversity of Sardinian myrtle (Myrtus communis L.) populationsMelito,SaraChessa,InnocenzaErre,PatriziaPodani,JánosMulas,Maurizio domestication genetic structure germplasm ISSR genotyping Background: The myrtle (Myrtus communis) is a common shrub widespread in the Mediterranean Basin. Its fruit and leaves exhibit antioxidant, antibacterial and antifungal properties, and are used for their content of essential oils and for their medicinal properties, but most commonly as an ingredient in locally made liquor. The uncontrolled exploitation of natural stands has reduced both the species' geographical coverage and the size of individual populations. The selection of genotypes for controlled cultivation requires a characterization of the genetic diversity present both within and between populations. Results: Genotypic variation was evaluated using ISSR profiling and genetic diversity characterized using standard population genetics approaches. Two major clusters were identified: one capturing all the candidate cultivars selected from various Sardinian localities, and the other wild individuals collected from Asinara, Corsica and Surigheddu. A moderate level of gene flow between the Sardinian and Corsican populations was identified. Discriminant analysis of principal components revealed a level of separation among the wild populations, confirming the population structure identified by the clustering methods. Conclusions: The wild accessions were well differentiated from the candidate cultivars. The level of genetic variability was high. The genetic data were compatible with the notion that myrtle has a mixed pollination system, including both out-pollination by insects and self-pollination. The candidate cultivars are suggested to represent an appropriate basis for directed breeding.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.16 n.6 20132013-11-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000600007en10.2225/vol16-issue6-fulltext-13
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	domestication genetic structure germplasm ISSR genotyping
spellingShingle	domestication genetic structure germplasm ISSR genotyping Melito,Sara Chessa,Innocenza Erre,Patrizia Podani,János Mulas,Maurizio The genetic diversity of Sardinian myrtle (Myrtus communis L.) populations
description	Background: The myrtle (Myrtus communis) is a common shrub widespread in the Mediterranean Basin. Its fruit and leaves exhibit antioxidant, antibacterial and antifungal properties, and are used for their content of essential oils and for their medicinal properties, but most commonly as an ingredient in locally made liquor. The uncontrolled exploitation of natural stands has reduced both the species' geographical coverage and the size of individual populations. The selection of genotypes for controlled cultivation requires a characterization of the genetic diversity present both within and between populations. Results: Genotypic variation was evaluated using ISSR profiling and genetic diversity characterized using standard population genetics approaches. Two major clusters were identified: one capturing all the candidate cultivars selected from various Sardinian localities, and the other wild individuals collected from Asinara, Corsica and Surigheddu. A moderate level of gene flow between the Sardinian and Corsican populations was identified. Discriminant analysis of principal components revealed a level of separation among the wild populations, confirming the population structure identified by the clustering methods. Conclusions: The wild accessions were well differentiated from the candidate cultivars. The level of genetic variability was high. The genetic data were compatible with the notion that myrtle has a mixed pollination system, including both out-pollination by insects and self-pollination. The candidate cultivars are suggested to represent an appropriate basis for directed breeding.
author	Melito,Sara Chessa,Innocenza Erre,Patrizia Podani,János Mulas,Maurizio
author_facet	Melito,Sara Chessa,Innocenza Erre,Patrizia Podani,János Mulas,Maurizio
author_sort	Melito,Sara
title	The genetic diversity of Sardinian myrtle (Myrtus communis L.) populations
title_short	The genetic diversity of Sardinian myrtle (Myrtus communis L.) populations
title_full	The genetic diversity of Sardinian myrtle (Myrtus communis L.) populations
title_fullStr	The genetic diversity of Sardinian myrtle (Myrtus communis L.) populations
title_full_unstemmed	The genetic diversity of Sardinian myrtle (Myrtus communis L.) populations
title_sort	genetic diversity of sardinian myrtle (myrtus communis l.) populations
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000600007
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The genetic diversity of Sardinian myrtle (Myrtus communis L.) populations

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