tailieunhanh - Báo cáo khoa học: Provenance variation in Pinus nigra at three sites in Northern Greece

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Provenance variation in Pinus nigra at three sites in Northern Greece. | Ann. For. Sci. 58 2001 893-900 INRA EDP Sciences 2001 893 Original article Provenance variation in Pinus nigra at three sites in Northern Greece Constantine Varelides George Brofas and Yiannis Varelides Forest Research Institute Terma Alkmanos Athens Greece Received 30 June 2000 accepted 6 March 2001 Abstract - Seventeen provenances of Pinus nigra Arnold from Greece Turkey Corsica and Calabria were tested on three sites in northern Greece. Data of the 9th year of tree height diameter and survival show differences in growth on two sites with varying results per site except for the Corsican provenance ranking high in both sites. Survival differences were identified only in one site with Calabrian 82 and Corsican 87 provenances ranking low. The analysis for twelve provenances common to the two sites where differences were identified show significant site-provenance interactions. Some of the Greek provenances especially the one from Thassos island grow better on the schist site with sandy loam soil while the Turkish provenances grow better on the conglomerate site with clay loam soil. The existence of Pinus nigra ecotypes adapted to original site conditions is discussed. Pinus nigra provenance trials site-provenance interactions Greece Résumé - Variations entre provenances de Pinus nigra dans trois sites du Nord de la Grèce. Dix-sept provenances de Pinus nigra Arnold de Grèce Turquie France Corse et Italie Calabre ont été testées dans trois sites du nord de la Grèce. L analyse des mesures de la neuvième année concernant la hauteur le diamètre et le taux de survie a montré des différences d accroissement sur deux sites avec des résultats variant dans chaque site à l exception de la provenance Corse dont l accroissement était important sur les deux sites. Des différences de taux de survie ont été identifiées sur un site seulement où les provenances de Calabre 82 et de Corse 87 ont mon-tré un taux relativement bas. Des interactions significatives entre provenances