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Molecular and Phenotypic Diversity of Traditional European Plum ( Prunus domestica L.) Germplasm of Southern Italy

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  • Rosanna Manco

    (Dipartimento di Agraria, Università degli Studi di Napoli Federico II, via Università 100, 80055 Portici (NA), Italy)

  • Boris Basile

    (Dipartimento di Agraria, Università degli Studi di Napoli Federico II, via Università 100, 80055 Portici (NA), Italy)

  • Claudio Capuozzo

    (Dipartimento di Agraria, Università degli Studi di Napoli Federico II, via Università 100, 80055 Portici (NA), Italy)

  • Pasquale Scognamiglio

    (Dipartimento di Agraria, Università degli Studi di Napoli Federico II, via Università 100, 80055 Portici (NA), Italy)

  • Marcello Forlani

    (Dipartimento di Agraria, Università degli Studi di Napoli Federico II, via Università 100, 80055 Portici (NA), Italy)

  • Rosa Rao

    (Dipartimento di Agraria, Università degli Studi di Napoli Federico II, via Università 100, 80055 Portici (NA), Italy)

  • Giandomenico Corrado

    (Dipartimento di Agraria, Università degli Studi di Napoli Federico II, via Università 100, 80055 Portici (NA), Italy)

Abstract

The European plum ( Prunus domestica L.) is a worldwide distributed tree species. Italy has an ample number of traditional varieties, but many are neglected and at risk of extinction. This germplasm is still cultivated in rural areas in spite of the EU-28 crisis of the stone fruit sector. Traditional European plum varieties remain poorly characterized, strongly limiting their promotion in local markets, use for farm diversification, and exploitation for local gastronomic products. In this study, we carried out an investigation of the morphological and genetic diversity present in an ex-situ collection of 29 traditional varieties of P. domestica of the Campania region (Southern Italy). The combination of five continuous and five categorical fruit traits allowed us to phenotypically distinguish all the varieties. Similarly, the Simple Sequence Repeats (SSRs) employed (five genomic and five deriving from Expressed Sequence Tags) identified a unique molecular profile for each variety. Moreover, the data indicated that the phenotypic and molecular investigations provided different clustering, suggesting that the two analyses sampled different sources of diversity. The number and the distribution of the scored phenotypes as well as the indices of genetic diversity imply the presence of a wide-ranging variation, which may sustain the development of high-value, niche market products. Our work provided evidence that the implementation of measures for a combination of ex-situ and on-farm conservation of traditional European plum varieties should be preferred to avoid the loss of an ample diversity.

Suggested Citation

  • Rosanna Manco & Boris Basile & Claudio Capuozzo & Pasquale Scognamiglio & Marcello Forlani & Rosa Rao & Giandomenico Corrado, 2019. "Molecular and Phenotypic Diversity of Traditional European Plum ( Prunus domestica L.) Germplasm of Southern Italy," Sustainability, MDPI, vol. 11(15), pages 1-14, July.
  • Handle: RePEc:gam:jsusta:v:11:y:2019:i:15:p:4112-:d:252983
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    References listed on IDEAS

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    1. G. Nuel & S. Robin & C. P. Baril, 2001. "Predicting distances using a linear model: The case of varietal distinctness," Journal of Applied Statistics, Taylor & Francis Journals, vol. 28(5), pages 607-621.
    2. Salvioni, Cristina & Ascione, Elisa & Henke, Roberto, 2013. "Structural and economic dynamics in diversified Italian farms," Bio-based and Applied Economics Journal, Italian Association of Agricultural and Applied Economics (AIEAA), vol. 2(3), pages 1-19, December.
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