PERFORMANCE OF 43 PINUS-PINASTER AIT PROVENANCES ON 5 LOCATIONS IN CENTRAL SPAIN

The paper present results of a 5-location all range Pinus pinaster pro venance study in Spain, conducted in four-replicated complete block de sign provenance tests. Total height, diameter, survival and stem form were analysed at age 19 years. An analysis of variance over locations was made and two methods of studying stability of provenances were use d, ecovalence and joint regression analysis. For stem form, provenance was the most important effect, and site was statistically not signifi cant. For height and diameter, site was the predominant effect, but hi gh provenance site - interaction was present. Significance of interact ion and implications on the use of the species were discussed.