Field Growth Performances of Different Eucalyptus pellita Genotypes

Abstract

Eucalyptus is a key species in global tropical hardwood industries and has gained importance in Malaysia since the establishment of Eucalyptus pellita plantations in 2008. Its versatile, durable wood supports various sectors, such as furniture, construction, and pulp production. High-quality wood enhances product longevity, reduces processing costs, and increases plantation value. To improve productivity and wood quality, selecting superior planting materials through genotype screening is vital. This study evaluated the growth performance of eight E. pellita genotypes as part of a breeding program for industrial applications. A progeny trial was conducted at Agricultural Park UPM, Puchong, Selangor, with field measurements including tree height, diameter at breast height (DBH), root collar diameter, volume, crown health, multiple leaders, and leaf browning recorded over a year after 31 months of planting. Genotype EP03 achieved the greatest height (17.7 to 18.0 m), while EP03 and EP11 had the largest DBH (14.1 to 14.0 cm). U × G recorded the highest volume (0.17 m³), followed by EP03 (0.15 m³) and EP11 (0.14 m³). EP03 and EP11 also exhibited superior crown health and lower leaf disease severity. Strong correlations were observed between DBH and both height and volume. Overall, EP03 and EP11 showed consistently superior growth and qualitative traits, making them promising candidates for forestry applications.