WOOD RESEARCH Volume 70, Number 1, 2025
NUR SAFITRI, AUDREY KINANTI, IMAM WAHYUDI, and ANDI DETTI YUNIANTI

COMPARISON OF FIBER QUALITY AND ANATOMICAL STRUCTURES OF ACACIA MANGIUM FROM BREEDING ACTIVITIES

This study aimed to analyze the effect of a tree breeding program on the fiber quality and anatomical structure of 10-year-old Acacia mangium wood. There are three trees in each breeding generation, namely the first generation (F0) and the second generation (F1). The results showed the average fiber dimensions of all populations were as follows: First generation has 966.05 µm length, 19.84 µm diameter, and 3.78 µm cell wall thickness, while Second generation has 1046.23 µm fiber length, 20.23 µm fiber diameter, and 3.56 µm cell wall thickness. The genetic improvement treatment showed significant improvement in the fiber dimension. According to the quality classification grade for pulp and paper raw materials, all populations belong to quality class II. Based on the list of the International Association of Wood Anatomists (IAWA), it can be ascertained that the wood anatomical structures of all populations showed no microscopic differences

WOOD RESEARCH Volume 67, Number 5, 2022
ARIF NIRSATMANTO, SRI SUNARTI, Dwi Kartikaningtyas, Betty Rahma Handayani, Teguh Setyaji, Surip, Sugeng Pudjiono, NOOR KHOMSAH KARTIKAWATI, Teddy Kardiansyah, Krisdianto, Dian Anggraini Indrawan, Rohmah Pari, Mindoro Razoki, Albertus Bambang Herdyantara, Sri Nugroho Marsoem, and Fanny Hidayati

Evaluation of the characteristics of Eucalyptus pellita and acacia hybrid superior clones selected from breeding program in Indonesia as materials for pulp and papermaking

This study evaluates the characteristics of superior clones of Eucalyptus pellita and Acacia hybrid (Acacia mangium × A. auriculiformis) aged six years selected from a breeding program in Indonesia as materials for pulp and papermaking. Height, diameter, and wood density differed significantly between species and among the clones, with respective mean values 21.6 m, 12.57 cm, and 657 kg.m-3 for E. pellita and 19.5 m, 24.83 cm, and 567 kg.m-3 for Acacia hybrid. Most fiber morphologies were significantly different between species. Cellulose and lignin differed significantly only among Acacia hybrid clones. The mean value of screened pulp yield Acacia hybrid (52.50%) was higher than that of E. pellita (50.31%). Kappa number and brightness were significantly different between species and among E. pellita clones. Some correlations of growth and wood properties showed a better relationship to pulp properties. Handsheet properties varied between species, and some clones showed an outstanding one.