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Báo cáo lâm nghiệp: "Croissance du Sapin de Grèce :variabilité inter-provenances dans trois stations méditerranéennes françaises"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: Croissance du Sapin de Grèce :variabilité inter-provenances dans trois stations méditerranéennes françaises. | Ann. Sci. For. 1988 45 3 239-254 Croissance du Sapin de Grèce variabilité inter-provenances dans trois stations méditerranéennes francaises B. FADY avec la collaboration technique de M. D. VAUTHIER INRA Domaine experimental du Ruscas Var Laboratoire de Botanique et Ecologie Méditerranéenne Université d Aix-Marseille III Centre Saint-Jérôme 13397 Marseille Cedex 13 Summary Height growth of the Greek Fir variability between provenances in three experimental sites in Mediterranean France Height growth is a very sensitive parameter by which to characterize genetic variability of the Greek Fir Abies cephalonica Loud. . In this study where ecovalence relative performance and analysis ot variance were used as mathematical and statistical tools the species growth stability in three comparative experimental sites in Mediterranean France showed significant variations between populations of different origins. Bud opening rates were also shown to be significantly different between provenances. However height growth dynamics remained comparable year after year for the great majority of provenances. Annual increment rates and inter-stationnal ecovalence were proven to be the most important characteristics of groups of provenances. Provenances from the Parnassos and the Taygetos mountains were often slow growers and sometimes had highly unstable responses to environmental changes. Moreover within each region provenances height growth patterns and drought resistance capacities were heterogenous. On the contrary provenances from the Mainalon and Pindos mountains displayed similar capacities within each region. Pindos provenances had a strong height growth and a good growth stability under varying environmental conditions. Mainalon provenances along with a very strong height growth had remarkable drought resistance capacities as well as a very stable growth pattern Therefore they are highly desirable provenances for reforestation in the upper Quercus ilex and Quercus pubescens .