Next Article in Journal
Modelling of Climate Conditions in Forest Vegetation Zones as a Support Tool for Forest Management Strategy in European Beech Dominated Forests
Previous Article in Journal
Economic Feasibility of Managing Loblolly Pine Forests for Water Production under Climate Change in the Southeastern United States
Article Menu
Issue 3 (March) cover image

Export Article

Open AccessArticle
Forests 2017, 8(3), 81; doi:10.3390/f8030081

Genetic Diversity of Walnut (Juglans Regia L.) in the Eastern Italian Alps

1
Dipartimento di Scienze AgroAlimentari, Ambientali e Animali, University of Udine, Via delle Scienze 208, 33100 Udine, Italy
2
Dipartimento di Scienze della Vita, University of Trieste, Via Licio Giorgieri 5, 34127 Trieste, Italy
3
Department of Agrifood Production and Environmental Science, University of Florence, P. le delle Cascine 18, 50144 Florence, Italy
4
Institute of Biosciences and BioResources, Division of Florence, National Research Council, Via Madonna del Piano 10, 50019 Sesto Fiorentino (Firenze), Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Timothy A. Martin
Received: 16 January 2017 / Revised: 27 February 2017 / Accepted: 9 March 2017 / Published: 16 March 2017
View Full-Text   |   Download PDF [5892 KB, uploaded 17 March 2017]   |  

Abstract

Juglans regia L. is distributed primarily across temperate and subtropical regions of the Northern Hemisphere. During the last glaciation, the species survived in refugial areas that in Europe included the Balkans and the Italian peninsula, two areas joined by a corridor represented by the Friuli Venezia Giulia region, where two germplasm reservoirs met and likely intercrossed during re-colonization after the last glaciation. In this work, two hundred and fifteen wild accessions native to the area were sampled, georeferenced, and genotyped with 20 microsatellite loci selected from the literature. The local accessions of this study displayed moderate genetic diversity with 80 alleles identified. The number of alleles/loci was 4.0 (4.7 alleles for the genomic SSRs (Simple Sequence Repeats) and 2.7 alleles per EST (Expressed Sequence Tag)-derived SSR, on average). An analysis of molecular variance (AMOVA) revealed that most of the molecular diversity was between individuals (nearly 98% of variation explained). The model-based clustering algorithms implemented either in STRUCTURE and GENELAND software revealed two clusters: The first one encompassed most of the samples and showed a great genetic admixture throughout the five sampling areas defined on the base of orographic characteristics of the region. The second cluster represented a small island with three samples traced back to an introduction from Russia at the beginning of the 20th century. View Full-Text
Keywords: walnut germplasm; Juglans spp.; germplasm; genetic diversity; SSR genotyping; spatial structure genetics walnut germplasm; Juglans spp.; germplasm; genetic diversity; SSR genotyping; spatial structure genetics
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Vischi, M.; Chiabà, C.; Raranciuc, S.; Poggetti, L.; Messina, R.; Ermacora, P.; Cipriani, G.; Paffetti, D.; Vettori, C.; Testolin, R. Genetic Diversity of Walnut (Juglans Regia L.) in the Eastern Italian Alps. Forests 2017, 8, 81.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Forests EISSN 1999-4907 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top