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Characterization of Sardinian cork oak (Quercus suber L.) genetic resources for economically important traits

Bullitta, Simonetta Maria and Dettori, Sandro and Manchinu, Manuela and Filigheddu, Maria Rosaria Sara Antonietta and Piluzza, Giovanna Antonia Maria (2011) Characterization of Sardinian cork oak (Quercus suber L.) genetic resources for economically important traits. Genetic Resources and Crop Evolution, Vol. 58 (7), p. 1007-1020. ISSN 0925-9864. eISSN 1573-5109. Article.

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DOI: 10.1007/s10722-010-9636-7

Abstract

Considering the very high socio economic value of cork oak (Quercus suber L.) in Mediterranean areas, a better knowledge of local genetic resources is necessary in order to reach a good balance between the conservation issues and the need of an efficient cork production network. In such frame, local germplasm of Q. suber from the main cork production areas of Sardinia was analysed for DNA and isozyme polymorphisms and for cork quality in relation to some environmental parameters. A total number of 24 sample stands of cork oak were selected, representing typical vegetation, sylvicultural and cork quality features within the eight identified cork growing areas in Sardinia. Considerable variation was found between cork oak stands of the different areas. Results of the principal component analysis performed on the cork quality data and environmental characters of the eight areas, showed that the first three components explain 72.2% of the variation. The major characters involved in this differentiation were cork quality characters such as dimensional recover, moisture and Mg content of the cork and also elevation of stands m a.s.l. for the first component. The second component appears to be determined by some climatic parameters (average annual temperature and average of the minimum temperatures of coldest month) and by the Fe and Zn in the cork. For the third component, major characters involved in differentiation are average annual rainfall, bark thickness and Ca content in the cork.

Item Type:Article
ID Code:6128
Status:Published
Refereed:Yes
Uncontrolled Keywords:Cork quality, cluster analysis, DNA polymorphisms, principal component analysis, Quercus suber L.
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/03 Arboricoltura generale e coltivazioni arboree
Area 07 - Scienze agrarie e veterinarie > AGR/02 Agronomia e coltivazioni erbacee
Divisions:001 Università di Sassari > 01 Dipartimenti > Economia e sistemi arborei
002 Altri enti e centri di ricerca del Nord Sardegna > CNR-Consiglio Nazionale delle Ricerche > Istituto per il sistema produzione animale in ambiente Mediterraneo, Sassari
Publisher:Springer Netherlands
ISSN:0925-9864
eISSN:1573-5109
Copyright Holders:© Springer Science+Business Media B.V. 2010
Deposited On:09 Jun 2011 11:51

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