tailieunhanh - Báo cáo lâm nghiệp: " Sicily represents the Italian reservoir of chloroplast DNA diversity of Quercus ilex L. (Fagaceae)"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài:" Sicily represents the Italian reservoir of chloroplast DNA diversity of Quercus ilex L. (Fagaceae)" | Ann. For. Sci. 62 2005 79-84 INRA EDP Sciences 2005 DOI forest 2004085 79 Original article Sicily represents the Italian reservoir of chloroplast DNA diversity of Quercus ilex L. Fagaceae Silvia FINESCHIa Salvatore COZZOLINOb Marianna MIGLIACCIOb Aldo Musacchioc Michela INNOCENTId Giovanni G. VENDRAMINd a Consiglio Nazionale delle Ricerche Istituto per la Protezione delle Piante Polo Scientifico Sesto Fiorentino Via Madonna del Piano Edificio E 50019 Sesto Fiorentino Firenze Italy b Dipartimento Biologia Vegetale Università di Napoli Federico II Italy c Dipartimento di Ecologia Università della Calabria Arcavacata di Rende - CS Italy d CNR Istituto di Genetica Vegetale Sezione di Firenze Italy Received 14 August 2003 accepted 6 February 2004 Abstract - Chloroplast DNA polymorphism was analysed in forty-four Italian holm oak populations. Results obtained with different markers PCR-RFLP and SSR were congruent showing a clear geographic structure of genetic diversity and high value of genetic differentiation GST . By combining PCR-RFLP and SSR eight haplotypes were identified in Italy six of them in Sicily. Most populations were fixed for one haplotype. Some populations from the extreme West Mediterranean Morocco and the extreme East Mediterranean areas Crete were interpreted as reproductively isolated populations because they had completely different haplotypes. These results strongly support the hypothesis of glacial refugia existing in southern Italy and underline the high conservation value of natural tree populations in Sicily in which most diversity was detected. Quercus ilex PCR-RFLP SSR genetic differentiation Résumé - La Sicile reservoir italien de la diversité de l ADN chloroplastique de Quercus ilex L. Le polymorphisme de l ADN chloroplas-tique a été analyse chez 44 populations italiennes de chêne vert. Les résultats obtenus avec differents marqueurs PCR-RFLP et SSR ont été cohérents montrant clairement une structure géographique de la .