Study on Selection of Eucalyptus Species/Provenances and Progeny

The results of 5-year study on Eucalyptus species,provenances and progeny trials involving 9 species and 8 provenances and 14 progenies(including 1 hybrids of E. urophylla×E. grandis)at Xinhui City,in centre of Guangdong Province showed that growth differences among species and provenances and progenies were highly significant.The growth of seedlot No.3 E. urophylla from superior trees of provenance trials(S14534)in Dongmen State Forest Farm of Guangxi region,2 provenances and 1 hybrid of E. urophylla×E. grandis and seedlot No.13544 E.tereticornis form 40 km N of Gladstone,QLD were better of all,with 35% of selecting gain at adaptability and growth characteristics.The best growth performance was from the superior trees of a provenance trails(S14534)in Dongmen State Forest Farm with a highly yield of 89.03 m3/hm2 at the fifth year.There were poor growth performances of seeds selected from Leizhou Forest Bureau of E. cloeziana,E.ABL No.12 and 2 progenies of E. urophylla due to the lack of an effective pollen isolation and a genetic control for seed production.