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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management JURNAL PERBENIHAN TANAMAN HUTAN
Rina Laksmi Hendrati
Centre for Forest Biotechnology and Tree Improvement
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences

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Quality of Genetically-Improved Acacia auriculiformis For Renewable Short-Rotation Wood-Energy Rina Laksmi Hendrati; Siti Husna Nurrohmah
Jurnal Manajemen Hutan Tropika Vol. 24 No. 3 (2018)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (548.468 KB)

Abstract

To be viable, fast-growing energy plantations must be large in volume, harvested at early age, and maximized calorific value which linked to heartwood proportion. This study examines 38 families in the second generation (F2) progeny trial of Acacia auriculiformis for energy. Heartwood proportion, calorific value and lignin content were assessed at ages 22, 30, 35, and 40 months.  Wood samples from around 300 selected individuals of observed ages from all families were examined. Quality was based on heartwood and sapwood development until reaching the commercial requirement of >33% for lignin content and >4,500 cal g-1 for calorific value.  When required quality has been obtained at particular age, assessment of biomass was carried out from all final individuals in the progeny test. Heartwood proportion varies among families. Heartwood possesses higher values than sapwood in lignin content and calorific value. Individuals with higher heartwood proportion are preferred. Both wood types only reached the required quality for solid wood energy after 3.5 years, however lignin content at much early age are appropriate for wood pellet and briquette. Selection improves heartwood proportion and quality from the first generation (F1) into F2 with an increase of 52% at three years.  Mean annual increments at 3.5 years is 43 m3ha-1yr-1.  
BREEDING FOR BETTER GROWTH OF Calliandra calothyrsus Meissn., A FAST GROWING LEGUME FOR WOOD-ENERGY Rina Laksmi Hendrati; Siti Husna Nurrohmah
Jurnal Perbenihan Tanaman Hutan Vol 7, No 1 (2019): Jurnal Perbenihan Tanaman Hutan
Publisher : Forest Tree Seed Technology Research & Development Center (FTSTRDC)/ Balai Penelitian dan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (358.429 KB) | DOI: 10.20886/bptpth.2019.7.1.13-20

Abstract

Short-rotation woody crops for renewable energy in anticipating decreasing fossil energy resources, has been a great interest for tropical countries where rain and sunshine are abundant. Calliandra calothyrsus, a multipurpose tree suitable for energy-wood is a very potential as short-rotation crop. This nitrogen-fixing species can be utilized as energy-wood by planting once but is able to secure annual harvest up to 15-20 years from its coppices. Beside that, this species supports earth vegetation cover for mitigating climate change. This fast growing, high volume and quality species fulfills requirement for energy needs as renewable wood biomass. In optimizing this role, its genetic improvement was undertaken during 2011 - 2014 to obtain the best energy-wood individuals in volume and quality. This study examined the growth-gain by comparing off spring of genetically improved trees (5 families) selected in 2014 from progeny test in Wonogiri, Central Java, to five (5) families from the unimproved ones. Significant differences on important growth characters have been obtained at the age of 4-month plants ready for field plantation. Calliandra’s genetic improvement has proven to increase the number of leaves, height, diameter and seedling quality up to 23.4 percent,   24.3 percent, 6.7 percent  and 20 percent consecutively. More complete materials have been established as realized genetic-gain trials in 2016. It is expected that similar trends will be realized in the fields.
Nine Indonesian Populations of Leucaena leucochepala (Lam.) de Wit. for Wood-Energy Breeding versus var. Tarramba Rina Laksmi Hendrati; Nur Hidayati
Jurnal Perbenihan Tanaman Hutan Vol 6, No 1 (2018): Jurnal Perbenihan Tanaman Hutan
Publisher : Forest Tree Seed Technology Research & Development Center (FTSTRDC)/ Balai Penelitian dan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (210.983 KB) | DOI: 10.20886/bptpth.2018.6.1.15-30

Abstract

Renewable energy from fast-growing woody species needs to be initiated rapidly in Indonesia, facilitated with conducive climate for continuous growth. Selecting suitable species and exploring its populations to capture as wide variation as possible for successful screening, is required. Leucaena leucochepala, which is the wood has long  been used for wood-energy, has been grown widely in Indonesia. Growing for more than 50 generations since its introduction, it should have been very well adapted. This study is to evaluate early performances of its seedlings as genetic materials ready for its breeding. Seeds of ten populations from different regions and habitats have been collected as materials for energy-wood breeding, included var. Tarramba, the best world performer grown in Indonesia. Further, 80 families were selected as genetic materials for progeny test. L. leucochepala produce flowers in 4 ̶ 6 months, therefore evaluation of early growth at 3 months should be appropriate. Results show high variations among populations and families as well as among habitat promising for breeding success. Some Indonesian populations and families grow promisingly due to performing similarly  against var. Tarramba, even some families are better. By using 5 best families of 3 different habitats and compared to var. Tarramba, it shows that plants from Bali, collected from saline area, are as good as var. Tarramba’s, the world best performers.
Co-Authors Nur Hidayati Siti Husna Nurrohmah Siti Husna Nurrohmah