Trends of genetic parameters and stand volume productivity of selected clones of Eucalyptus pellita observed in clonal trials in Wonogiri, Central Java

Abstract

Breeding program of Eucalyptus pellita has proceeded into advanced generationswith clonal development as best way to deliver greater genetic gain. Clonal test is a prerequisite for selecting and verifying the clones productivity before deployment. Following the breeding strategy, clonal trials of E. pellita were established in Wonogiri, CentralJava. The purposes of this study are to observe trends of genetic parameters and stand volume productivity of clones tested in clonal trials of E. pellita. The trials were laid out in two experimental designs: 1) nine clones, 16 replications, single tree-plot, spacing 3 x 2m;2) 4 clones, 2-4 replications, 16 squares tree-plot, spacing 3 x 2m. Each trial also contains control (i.eseedling material). Measurements were conducted five times from six monthsto 46 months age. Results showed that trends of growth increased along the measurements with nine tested clones performed better than control seedlings. The growths were significantly different among clones along the ages with clone repeatibility ranging from 0.49 to 0.98.Three selected clones namely clone 1,2 and 3on the basis of height growth and multiplication rates showed higher stand volume productivity compared to control and consistently increased on average of0.37 m3/ha at 6 months to 73.93 m3/ha at 46 months age.