Phenotypic Var ia tion of Geographic Provenance in Tsuga dum osa

Nine p rovenances of Tsuga dum osa (D. Don) Eichlerwere collected from 5 distribution areas in Yunnan.The quantitative trait variation of different p rovenances was studied and p rovenance test was carried out. The variance analysis showed that there were significant differences in the 12 quantitative traits among the p rovenances. Itwas found that geograph, water and temperature were the main factors affecting the morphological differentiation byusing the method of p rincipal component analysis. Correlation analysis indicated that geographic variation of Tsugadum osa was continuous by altitude gradient, and the variation was random by latitude factor. After three-year cultivation, there were distinct differences in growth characteristics among 9 p rovenances. Four superior p rovenanceswere selected according to the standard height of 3-year-old seedling.