TAILIEUCHUNG - Báo cáo lâm nghiệp: "Morphological evaluation of cork oak (Quercus suber): Mediterranean provenance variability in Tunisia"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: Morphological evaluation of cork oak (Quercus suber): Mediterranean provenance variability in Tunisia. | Ann. For. Sci. 64 2007 549-555 INRA EDP Sciences 2007 DOI forest 2007032 Available online at Original article Morphological evaluation of cork oak Quercus suber Mediterranean provenance variability in Tunisia Mhemmed GAND0URa Mohamed Larbi KHOUJAb Lamjed T0UMlc Saida TRlKla a Laboratoire de Biochimie Département de Biologie Faculté des Sciences de Tunis Université Tunis El-Manar Tunis 2092 Tunisia b Laboratoire d Ecologie et d amelioration Sylvo-Pastoral Institut National des Recherches en Génie Rural Eau et Forêt INRGREF BP 10 Ariana 2080 Tunisia c Laboratoire de Génétique et Amelioration des Plantes Institut Sylvo-Pastoral de Tabarka ISPT Tabarka 8110 Tunisia Received 4 April 2006 accepted 7 February 2007 Abstract - Twenty-six provenances 2 340 plants of cork oak Quercus suber spp. originating from Portugal Spain Italy Morocco Algeria and Tunisia were tested for genetic variation among and within provenances by growth traits. Seven morphometrical characters were measured in 90 plants from each provenance. Analysis of variance showed highly significant differences for all characters. The phenotypic coefficient of differentiation reached for the form and for height thus revealing a strong structuring between the provenances. Comparative study of growth among the provenances revealed more vigorous growth and better survival rate for those from Morocco Spain and Portugal which may constitute better materials for afforestation. Furthermore this variability appeared to be geographically structured and would be mainly genetically controlled as cork oak provenances were cultivated under the same environmental conditions. Our results should be helpful for guide forest managers in afforestation. Quercus suber genetic variability afforestation Mediterranean plants Résumé - Evaluation morphologique chez le chêne liège Quercus suber variabilité des provenances méditerranéennes en Tunisie. La varia-bilité génétique inter et .

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