Progress towards the Genetic Transformation of Four Tropical Acacia Species: Acacia Mangium, Acacia Crassicarpa, Acacia Mearnsii and Acacia Albida

2000 ◽  
pp. 161-178 ◽  
Author(s):  
M. Quoirin ◽  
A. Galiana ◽  
D. K. S. Goh ◽  
A. Limanton ◽  
V. Gratio ◽  
...  
Keyword(s):  
Genetic Transformation ◽  
Acacia Mangium ◽  
Acacia Mearnsii ◽  
Acacia Species ◽  
Acacia Albida ◽  
Acacia Crassicarpa

scholarly journals Diversité Et Structure Floristiques Sous Des Peuplements d’Acacias Australiens En Zone Forestière De La Côte d’Ivoire

2016 ◽  
Vol 12 (35) ◽  
pp. 229
Author(s):  
Kouadio Kouassi Richard ◽  
Bakayoko Adama ◽  
N’guessan Kanga Anatole ◽  
Konan Djezou
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Acacia Mangium ◽  
Research Station ◽  
Cote D’Ivoire ◽  
Acacia Species ◽  
Côte D'ivoire ◽  
African Flora ◽  
Acacia Crassicarpa ◽  
The Impact

Since thirty years, four Australian Acacias species are introduced and studied in Anguédédou Research station. The station research is located in evergreen forest in the south of Côte d'Ivoire. The objective of the introduction of these species, is to rehabilitate degraded grounds and fallow after growing. The study aims at appreciating the impact of Acacia species on floristic diversity and the regeneration of forest species. For collecting data, we use quadrat method (35 x 50 m and 6 x 6 m).This method permitted the inventory of 212 species on 1.05 ha. Among these species, 1.89 % are Ivorian endemic species and 11.32 % are endemic of West African flora. The flora under the different species of Acacia are relatively diversified and dense. The majority of plant inventoried under Acacia species have small diameters. The highest specific richness average per plots (36 m2) were noted in the 11 years old parcels of Acacia mangium (26.20±2.34) and 27 years old parcels of Acacia auriculaeformis (25.40±2.34) and Acacia crassicarpa (30.60±2.34). The mean values of diameters (dbh ≥ 2.5 cm) fluctuate from 2.94±0.56 cm for the 8 years old stands of Acacia mangium to 8.09±0.56 cm for the 27 years old settlements of Acacia crassicarpa. The results show that leguminous trees can be used for recolonization of the deforested areas in order to rebuild quickly their plant biodiversity.

scholarly journals CHAPAS AGLOMERADAS CONFECCIONADAS COM UREIA-FORMALDEÍDO SOB ADIÇÃO DE TANINO EM PÓ

2017 ◽  
Vol 27 (4) ◽  
pp. 1349 ◽  
Author(s):  
Fabricio Gomes Gonçalves ◽  
Roberto Carlos Costa Lelis ◽  
José Tarcísio da Silva Oliveira ◽  
Rosilei Aparecida Garcia ◽  
Edvá Oliveira Brito
Keyword(s):  
Acacia Mangium ◽  
Acacia Mearnsii

Este trabalho teve por objetivo avaliar as propriedades tecnológicas de chapas aglomeradas fabricadas com partículas de Acacia mangium e adesivo ureia-formaldeído (UF) mediante adição de tanino comercial de Acacia mearnsii na forma de pó a suas partículas. As chapas foram fabricadas sob diferentes razões de compactação e o efeito destas nas propriedades tecnológicas foi avaliado. Utilizou-se o delineamento inteiramente casualizado no esquema fatorial 4 x 4, sendo quatro porcentagens de adição de tanino em pó às partículas (0, 10, 20 e 30%), após aplicação do adesivo ureia-formaldeído e quatro razões de compactação nominais - 1,39, 1,55, 1,73, e 2,00. Foi utilizado o ciclo de prensagem com pressão de 3,92 MPa e temperatura de 140ºC por 8 minutos. A adição de tanino em pó às partículas encoladas com ureia-formaldeído proporcionou melhoras em algumas propriedades físicas e mecânicas. Os resultados indicam a adição do tanino em pó como alternativa viável de utilização em chapas de partículas, sem necessidade de sua diluição.

scholarly journals Pengaruh Lama Penyimpanan Chip Terhadap Kualitas Pulp

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Rachmawati Apriani ◽  
Muhammad Akbar
Keyword(s):  
Acacia Mangium ◽  
Total Solid ◽  
Kappa Number ◽  
Acacia Crassicarpa

Pada penelitian ini bertujuan untuk mengetahui lama penyimpanan bahan baku chip guna mengetahui kualitas pulp yang dihasilkan dan pengaruhnya apabila disimpan dalam waktu yang lama. Di dalam penelitian ini ada beberapa tahap proses yakni, proses cooking dengan memvariasikan waktu penyimpanan chip selama 1 minggu, 2 minggu, 3 minggu dan 4 minggu dengan bahan baku yang berupa kayu Acacia mangium, Acacia crasicarpa, dan Eucalyptus. Untuk waktu optimum diperoleh maksimal waktu tunggu yakni dua minggu. Semakin lama chip disimpan maka akan membuat tingkat kekeringan chip meningkat sehingga lebih banyak larutan pemasakan yang akan digunakan. Dengan nilai parameter yang dihasilkan minggu kedua total solid acacia mangium 16.23%, acacia crassicarpa 16.78% dan Eucalyptus 17.23%. Nilai yield acacia mangium 54.87%, acacia crassicarpa 54.15% dan Eucalyptus 48.33%. Nilai kappa number Acacia mangium 22.3, Acacia crassicarpa 21.7 dan Eucalyptus 20.4. Nilai viskositas Acacia mangium 1228.23 cm3/gr, Acacia crassicarpa 1200.13 cm3/gr dan eucalyptus 1162.87 cm3/gr. Nilai REA Acacia mangium 9.43 g/L, Acacia crassicarpa 8.73 g/L dan eucalyptus 8.41 g/L. Nilai brightness Acacia mangium 28.23 %, Acacia crassicarpa 24.99 % dan Eucalyptus 37.51 %. Nilai reject Acacia mangium 0.57 %, Acacia crassicarpa 0.42 % dan Eucalyptus 0.31%.

Symbiosis of Acacia auriculiformis and Acacia mangium with mycorrhizal fungi and Bradyrhizobium spp. improves salt tolerance in greenhouse conditions

2005 ◽  
Vol 32 (12) ◽  
pp. 1143 ◽  
Author(s):  
Diégane Diouf ◽  
Robin Duponnois ◽  
Amadou Tidiane Ba ◽  
Marc Neyra ◽  
Didier Lesueur
Keyword(s):  
Salt Tolerance ◽  
Mineral Nutrition ◽  
Mycorrhizal Fungi ◽  
Glomus Intraradices ◽  
Mycorrhizal Fungus ◽  
Acacia Mangium ◽  
Arbuscular Mycorrhizal ◽  
Ectomycorrhizal Fungus ◽  
Acacia Auriculiformis ◽  
Acacia Species

The aim of our work was to assess the growth and mineral nutrition of salt stressed Acacia auriculiformis A. Cunn. ex Benth. and Acacia mangium Willd. seedlings inoculated with a combination of selected microsymbionts (bradyrhizobia and mycorrhizal fungi). Plants were grown in greenhouse conditions in non-sterile soil, irrigated with a saline nutrient solution (0, 50 and 100 mm NaCl). The inoculation combinations consisted of the Bradyrhizobium strain Aust 13c for A. mangium and Aust 11c for A. auriculiformis, an arbuscular mycorrhizal fungus (Glomus intraradices, DAOM 181602) and an ectomycorrhizal fungus (Pisolithus albus, strain COI 007). The inoculation treatments were designed to identify the symbionts that might improve the salt tolerance of both Acacia species. The main effect of salinity was reduced tree growth in both acacias. However, it appeared that, compared with controls, both rhizobial and mycorrhizal inoculation improved the growth of the salt-stressed plants, while inoculation with the ectomycorrhizal fungus strain appeared to have a small effect on their growth and mineral nutrition levels. Endomycorrhizal inoculation combined with rhizobial inoculation usually gave good results. Analysis of foliar proline accumulation confirmed that dual inoculation gave the trees better tolerance to salt stress and suggested that the use of this dual inoculum might be beneficial for inoculation of both Acacia species in soils with moderate salt constraints.

scholarly journals DENSITOMETRIA DE RAIOS X NA AVALIAÇÃO DA DENSIDADE EM PAINÉIS DE PARTÍCULAS

2018 ◽  
Vol 28 (3) ◽  
pp. 1151 ◽  
Author(s):  
Fabricio Gomes Gonçalves ◽  
Roberto Carlos Costa Lelis ◽  
Alexandre Monteiro de Carvalho ◽  
Mário Tomazello Filho
Keyword(s):  
Acacia Mangium ◽  
Acacia Mearnsii

Objetivou-se neste trabalho determinar o perfil da densidade aparente em painel aglomerado confeccionado com partículas da madeira de Acacia mangium. Utilizou-se a técnica de microdensitometria de raios X correlacionada com a densidade gravimétrica. Foram utilizados os adesivos ureia formaldeído e tanino comercial de Acacia mearnsii aplicado na forma de pó diretamente nas partículas previamente encoladas. Os painéis foram fabricados com quatro razões de compactação (1,39; 1,55; 1,73; e, 2,00) combinadas a quatro proporções de tanino em pó (0, 10, 20 e 30%), totalizando 16 tratamentos (4 painéis por tratamento). Foram determinados, analisados e comparados o perfil da densidade aparente (densidade média, densidade máxima e densidade mínima) e a densidade gravimétrica dos aglomerados produzidos. O perfil da densidade é apresentado graficamente e interpretado por análise de variância e regressão linear múltipla. Os valores de densidade aparente média, máxima e mínima observados para os painéis aglomerados obtidos pela microdensitometria de raios X variaram de 357 a 697 kg/m3, 386 a 824 kg/m3 e 334 a 634 kg/m3, respectivamente, e pelo método gravimétrico de 369 a 742 kg/m3. A técnica mostrou-se eficiente na determinação de variações nos perfis de densidade aparente ao longo da espessura dos painéis em todos os tratamentos, bem como mostrou-se eficiente na obtenção direta da densidade aparente. Estas variações poderiam ser minimizadas se o tanino utilizado fosse anteriormente hidratado em água. Houve forte correlação entre as médias das densidades obtidas pelo método do microdensitômetro de raios X e pelo método gravimétrico.

Agrobacterium tumefaciens-mediated genetic transformation of Acacia crassicarpa via organogenesis

2008 ◽  
Vol 95 (2) ◽  
pp. 141-147 ◽  
Author(s):  
Mingjia Yang ◽  
Xiangming Xie ◽  
Caixia Zheng ◽  
Fangqiu Zhang ◽  
Xiaoqing He ◽  
...  
Keyword(s):  
Agrobacterium Tumefaciens ◽  
Genetic Transformation ◽  
Acacia Crassicarpa

Bioactive phenolic substances in important tree species. Part 3: Knots and stemwood of Acacia crassicarpa and A. mangium

Holzforschung ◽  
2005 ◽  
Vol 59 (1) ◽  
pp. 94-101 ◽  
Author(s):  
Suvi P. Pietarinen ◽  
Stefan M. Willför ◽  
Rainer E. Sjöholm ◽  
Bjarne R. Holmbom
Keyword(s):  
Tree Species ◽  
Acacia Mangium ◽  
Acacia Crassicarpa ◽  
Phenolic Substances

Abstract Polyphenols in heartwood, sapwood, and knots of Acacia crassicarpa and Acacia mangium were analysed using GC, GC-MS, HPSEC, and NMR. Melacacidin and isomelacacidin dominated in A. crassicarpa and teracacidin and its ketone in A. mangium. Also, bi- and triflavonoids were tentatively identified in the samples. The amounts of polyphenols were larger in the knots than in the heartwood of both species, while the composition within the species was the same.

scholarly journals Evaluation of in vitro digestibility and pH of Acacia seed pods (Acacia sp.)

2021 ◽  
Vol 902 (1) ◽  
pp. 012003
Author(s):  
R F Hadi ◽  
E Handayanta ◽  
I Ngadyastuti
Keyword(s):  
Ph Value ◽  
Rumen Fluid ◽  
Acacia Mangium ◽  
Acacia Auriculiformis ◽  
In Vitro Digestibility ◽  
Acacia Species ◽  
Dry Matter Digestibility ◽  
Randomized Design ◽  
Two Stages

Abstract This study aimed to determine the rumen fluid’s in-vitro dry matter digestibility (IVDMD), in-vitro organic matter digestibility (IVOMD), and pH of different species Acacia seed pods as a single feed ingredient. The Acacia species in this study were Acacia mangium, Acacia auriculiformis, and Acacia crassicarpa. The method used was in vitro two-stages with the first 48 hours of incubation (the rumen) and the second 48 hours of incubation (post-rumen), and analyses of pH. The research design used was a completely randomized design (CRD) with 3 treatments and 5 replications based on the Acacia species. The data were analysed with oneway analysis of variance (ANOVA) followed by Duncan’s multiple range test (DMRT). The results showed that IVDMD stage one was 34.59-37.59%; IVOMD stage one was 38.66-43.06%. Stage two of IVDMD was 58.02-59.23%; stage two of IVOMD was 51.67-55.01% and rumen fluid pH were 6.58-7.02. Different Acacia seed pods had significant differences in IVDMD and IVOMD stage one in the rumen and stage two in the post-rumen (P<0.05), but not in the pH value (P>0.05). We concluded that different acacia seed pods had different digestibility values in the rumen and post-rumen. However, it does not affect the rumen acidity.

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