The Selection Analysis of 10-Year-Old Eucalyptus pellita Provenance and Family

Based on the height(H) and diameter at breast height(DBH) of 1-to 5-year-old and 10-year-old Eucalyptus pellita provenance and family trial forest,the difference of traits in different families and provenance was analyzed.Then the heritabilities of two traits in different years were estimated.Breeding values(BV) for both traits in many years were estimated by Best Linear Unbiased Predict(BLUP),which were used to choose superior provenances and families by the Ward's Minimum Variance Cluster Analysis(WARD).The results showed that the difference was significant among families for two traits in 1 to 5 years,but not significant after thinning.It gave the highest heritabilities of each trait at the age of 2,of 0.147 and 0.094 respeclively.Besides,Australia provenances 17860,17861,18749,and 18750 had growth advantage in 14 provenances.Seventeen superior families including No.233 and No.250 were selected out from 244 families,which provided fundamental materials for long term breeding of Eucalyptus pellita.