Genetic improvement of &lt;i&gt;Leucaena leucocephala&lt;/i&gt; for wood energy

Hendrati, Rina Laksmi; Nurrohmah, Siti Husna

doi:10.17138/tgft(7)210-213

Cited by 3 publications

(4 citation statements)

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“…Measurements of the tree height and stem diameter were conducted until the age of 12 months. At 4 months the height recorded was 0.82 m compared to the range 0.28 to 0.36 m for various breeds tested by Hendrati and Nurrohmah (2019). The recorded data showed that the largest tree had a height of 5.6 m and stem diameter of 7.9 cm.…”

Section: Growth Studymentioning

confidence: 84%

“…Although L. leucocephala is highly inbred and produces copious seeds in as little as 18 months, clonal in vitro propagation would be useful as most other Leucaena species are self-incompatible and produce few inbred (true to type) seeds (Brewbaker 1982). Hendrati and Nurrohmah (2019) in their studies looked at a separating distance of 10 to 100 m in between individual mother trees (families) in an attempt to avoid or reduce in-breeding. Rapid in vitro asexual propagation techniques would also be useful for promising hybrids, such as L. pulverulenta × L. leucocephala, and L. leucocephala × L. diversifolia, that have recently been made by tedious hand pollination techniques (Brewbaker 1982).…”

Section: Growth Studymentioning

confidence: 99%

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Leucaena leucocephala: A fast-growing tree for the Malaysian particleboard industry

Rahman

Johari

Sarmin

et al. 2020

BioRes

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Leucaena leucocephala (Lam) de Wit is a fast-growing tree species often used as lead (shade) tree that can be cultivated in Malaysia. This species has potential as an alternative resource for the Malaysian furniture and panel board industries in the coming years because of a shortage of the current frequently used raw material (rubberwood). A study on growth performance and potential as particleboard resource material was done. In terms of growth performance, the preliminary study indicated that Leucaena trees grew at a rate of 44% from the first month to the forth month and 43% from 6 to 12 months. As for particleboard manufacturing, Leucaena: Rubberwood admixture bound with urea formaldehyde (8%, 10%, and 12% resin content) to a density of 700 kg/m3, showed promise of usability when all boards pass the Type P2 board requirement of EN312:2010. In general, L. leucocephala wood is a potential raw material for the manufacture of wood composites.

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Section: Growth Studymentioning

confidence: 84%

Section: Growth Studymentioning

confidence: 99%

Leucaena leucocephala: A fast-growing tree for the Malaysian particleboard industry

Rahman

Johari

Sarmin

et al. 2020

BioRes

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“…This program has produced superior seeds from the first generation (F1) for Calliandra callothyrsus with increment (growth) reaching 65 m 3 ha -1 year -1 , and second-generation (F2) for Acacia auriculiformis with increment can reach 72 m 3 ha -1 year -1 [70]. In the Leucaena species, preliminary observations show that the Tarramba cultivar with seeds originating from Kupang (East Nusa Tenggara Province) and known to be more resistant to pest, has tremendous biomass potential [71,72]. For Gliricidia species, the breeding is more on efforts to increase plant productivity, especially as a source of animal feed.…”

Section: Discussionmentioning

confidence: 99%

A System Dynamics Model for Wood-Based Renewable Energy Production from Degraded Land Rehabilitation

Narendra¹,

Widiatmaka²,

Kusmana³

et al. 2021

Pol. J. Environ. Stud.

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The trend of using wood biomass as a renewable energy source must be supported by a more extensive feedstock through the utilization of degraded land. However, not all regions have information on land potential in the provision of wood biomass. This study aims to develop a system dynamic model that can describe the potential of wood biomass production from degraded land rehabilitation. The main steps include problem identification, mapping causal loop diagrams, integrating mathematical models in a stock and flow diagram, evaluating the model, and simulating the conditions in the next 20 years based on existing conditions and three alternatives of policies scenarios. The result showed that all scenarios able to reduce the degraded land area by 16%. Energy wood plantations can reduce the number of unemployed by half of the simulated amount while applying a moderate, optimistic, or very optimistic scenario, the number of unemployed will only be a quarter left in 2040. The optimistic scenario was considered to be applied in the rehabilitation of degraded land. The expected goals must be supported by the use of superior seedlings and effective forestry extension by increasing the number of extension officers and extension assistants.

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“…e species has been utilized as biofertilizer or green leaf manuring to improve soil fertility, as forage for animal feed, and a prominent source of high quality timber [8][9][10]. In Indonesia, the species has been cultivated since 1800 with some of its cultivars being recognized as important timber producers due to its valuable traits [11,12]. erefore, the species is well-adapted towards abiotic stress in marginal lands while being proved useful for afforestation and landscaping [13].…”

Section: Introductionmentioning

confidence: 99%

Improved Salt Tolerance of Lamtoro (Leucaena leucocephala) through the Application of Indigenous Mycorrhiza

Delvian

Hartanto

2021

International Journal of Forestry Research

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Salt stress is one of the serious abiotic stressors which limit the growth and development of important crops in agricultural lands. Arbuscular mycorrhizal fungi (AMF) have been implemented as a strategy to mitigate the adverse effects due to an impact of salt stress through the structural and physiological adjustment. This study aimed to determine a relationship between salinity levels (0, 150, 300, and 450 mM NaCl) and AMF treatments (Glomus manihotis, Glomus etunicatum, and G. manihotis + G. etunicatum) to the salt tolerance of Leucaena leucocephala seedlings in a greenhouse. Salinity reduced the plant height, biomass, and root colonization by AMF. However, the inoculation of AMF, especially the consortium, ameliorated the negative effects by stabilizing the growth performance and supporting the photosynthetic outputs through optimum nutrient and mineral absorptions. These results were indicative through a significant interaction between salinity levels and the types of AMF treatment in all parameters except in the total leaf protein and proline contents from the two-way ANOVA results. Root colonization was highly correlated with the plant height, biomass, and total carbohydrate content with a maximum contribution conferred by the AMF consortium, based on Pearson’s correlation coefficient test and PCA analysis. Our study then showed the positive impact of AMF toward salt tolerance by L. leucocephala with potential application and cultivation in salt-stressed ecosystems.

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Genetic improvement of <i>Leucaena leucocephala</i> for wood energy

Abstract: Poster presented at the International Leucaena Conference, 1‒3 November 2018, Brisbane, Queensland, Australia.

Cited by 3 publications

References 0 publications

Leucaena leucocephala: A fast-growing tree for the Malaysian particleboard industry

Leucaena leucocephala: A fast-growing tree for the Malaysian particleboard industry

A System Dynamics Model for Wood-Based Renewable Energy Production from Degraded Land Rehabilitation

Improved Salt Tolerance of Lamtoro (Leucaena leucocephala) through the Application of Indigenous Mycorrhiza

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