Genetic control of growth traits in Eucalyptus pellita at Bau Bang, Binh Duong
Keywords:
Eucalyptus pellita, heritability, genetic gainAbstract
Eucalyptus pellita is a fast growing and highly pest and disease resistant and suitable for central coast and south east Vietnam. Objectives of the study were to evaluate growth potential and feasibility of genetic improvement of this species in the South Eeast. The study was based on an 104 family progeny - provenance trial planted in 2002 in Bau Bang, Binh Duong province. Results of the study confirmed that E. pellita is a
promising species for the South East. The improved seed sources from seedling seed orchard grew faster than unimproved seed sourcesfrom natural forest. Heritability of diameter increased with ages, ranging from 0.10 to 0.25
while it remained stable for height, about 0.20. Phenotypic correlation of diameter between age 3 and 6 was 0.86; age 3 and 10 was 0.51; and age 6 and 10 was 0.90. Genetic gain of stem volume would have increased 13 - 15% if 5 - 10% best trees had been selected in the progeny trial at 6 years old
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