Screening of Black Wattle Families with Open-pollinated Progenies of Native Stands

Total l68 open-pollinated black wattle(Acacia mearnsii Willd)seedlots collected from l9 provenances in Australia and l progeny from Wenzhou are tested in the provenance/progeny trial. The paper compares provenance and progeny performance in growth in the trial at four years age. The results show high significant differences among the provenances and progenies.The progenies show high genetic variance in growth.The heritabilities of height and DBH are 0.43、0.32 for family mean and 0.32、0.22 for individual respectively. The genetic gain of height and DBH are 24%～33% for families,Analyses of growth of the families present at bothsites show significant genotype-environment interaction.35 families areselected by using a breeding value form.