Common names africanmahogany in english ivory coast khaya in english lagosmahogany in english. Before requesting germplasm, scientists should consider their capacity to receive it. Volume equations for khaya ivorensis in brazil 3287 classes with amplitude equal to the mean value plus and minus one standard deviation. Khaya ivorensis is a very large evergreen tree which can be deciduous in drier climates, that attains a height of 40 50 metres. Assessing forest plantation productivity of exotic and. Restoration of degraded dry semideciduous forest ecosystems. Gum exudate from khaya ivorensis was evaluated for their physicochemical and rheological properties. Antibacterial and toxicological properties of essential oils. Mahogany, ghana, identification, khaya species, qualitative, quantitative four closely related ghanaian khaya woods were studied for differences in anatomical, chemical and physical properties to enable clear identification of the. Khaya senegalensis was introduced to sri lanka about 30 years ago and in the past 10 years it has become one of the priority species for timber plantation establishment in their dry zone ca. To examine its potential for clonal propagation, the effects of cutting length, leaf area, stockplant maturation, auxin, and smoke solution treatments were investigated. The present study was carried out to determine the antibacterial properties of the essential oils of these plants against the selected bacterial isolates and to establish or. Khaya ivorensis in the germplasm resources information network grin, u.
Chemical investigation of the diethyl ether extract of the stem bark of khaya ivorensis a chev meliaceae afforded ten limonoids of angolensates, ring d. The psi activity as indicated by the maximum quantity of photooxidizable p700 was maintained stable during the daytime. The difference, however, can only be seen with great difficulty if at all. Department of biosciences, university of helsinki, po box 65, fi00014 university of helsinki, finland, email. African mahogany lumber wholesale supplier khaya ivorensis. Khaya ivorensis exotic species and hopea odorata indigenous species are among the promising tree species for forest plantation in malaysia as alternatives to. World news of natural sciences 303 2020 281296 282 1. Sustained diurnal stimulation of cyclic electron flow in. Introduction forest is a highly complex, constantly changing environment made up of a variety of. Forestry research institute of ghana trial plots at benso in the wet evergreen forest ecological zone on ghana. Comparative ecological wood anatomy of african mahogany khaya ivorensis with special reference to damage caused by hypsipyl robusta shootborer rinne e. Pdf growth performance and biomass accumulation of a.
African or dry zone mahogany khaya senegalensis desr. Under the decree, uprooting or damage to this species is prohibited, as is the destruction of their fruits and seeds. Combining morphology and population genetic analysis. In accordance with their mandate and the reccomandations of their statutory bodies, fao and unep agreed to undertake a reassessment of the present situation and current evolution of the forest resources of the tropical world within the framework of the global environment monitoring system gems. Khaya ivorensis, a key species of the african mahoganies, is included in the iucn. Khaya anthotheca is a large evergreen tree up to 60 m tall up to 30 m in the garden with an elongated or rounded, muchbranched crown. Khaya senegalensis e khaya ivorensis j larix deciduas c larix kaempferi c larix leptolepis c larix occidentalis f liquidamper styraciflua a lovoa klaineana j lovoa trichiloides j maesopsis eminii j mansonia altissima b millettia stuhimannii a mimusops heckelii b mitragyna ciliate e. The species is reported to be found in all the timber producing areas of west africa, from ivory coast to gabon and cabinda, and is primarily found in the ivory coast, ghana, and nigeria.
Std species group chip calibration scale b c e f g h j. The structures of compounds 14 were established on the basis of extensive spectroscopic analysis. Pdf the demonstrated wide adaptability, substantial yield potential and proven timber quality of african. A ban on the export of timber in log form was introduced in ghana. Khaya senegalensis is a multipurpose african timber species. Unlike other khaya species which do not require much rainfall, it is reported to grow in the rain forest in lowlying areas within its range. Leaf morphometric variation in two species of african mahoganies. Munyama uganda, acajou dafrique ivory coast, dubini, dukuma fufu ghana, ogwango nigeria. Stem wood structure of four ghanaian khaya species. Wood database and searchable library woodworkers source. Potential of a khaya ivorensis alstonia boonei extract.
Four limonoids, 1odeacetyl6deoxykhayanolide e 1, 1odeacetyl2. It is found in angola, cameroon, cote divoire, gabon, ghana, liberia, and nigeria where it grows primarily in lowland tropical rainforests. Dialairi ivory coast, ghana, akuk, ogwango nigeria, eri kiree uganda, bandoro sudan. Khaya is a genus of five species of trees in the mahogany family meliaceae. The inhibitive effect of khaya ivorensis gum exudate ki for the corrosion of mild steel in hcl medium has been evaluated using the weight loss, gasometric, and thermometric techniques. Department of agriculture agricultural research service. The experimental plantations included tree species that repre. Mahogany, ghana, identification, khaya species, qualitative, quantitative four closely related ghanaian khaya woods were studied for differences in anatomical, chemical and physical properties to enable clear identification of the species. Khaya ivorensis khaya ivorensis is the highest quality lumber in the african mahogany family, and is considered an acceptable and costconscious alternative to genuine mahogany sweitenia macrophylla. Africa mahogany khaya spp is a member of the family meliaceae distributed. The gum was found to be soluble in water but insoluble in acetone, chloroform and sparingly soluble in ethanol indicating that the gum is ionic. In addition, it was established that leaf size in khaya ivorensis k. General information khaya ivorensis is a very large evergreen tree which can be deciduous in drier climates, that attains a height of 40 50 metres303.
The inhibition efficiencies of the gum were found to increase. The challenge to growers and other industry stakeholders is to combine forces in. Ecogeographic variation in leaf morphology of african mahogany khaya anthotheca and khaya ivorensis provenances in ghana article pdf available in european journal of scientific research. Meliaceae african mahogany benin mahogany senegal mahogany other common names. The development of clonal propagation could improve plantation establishment, which is currently impeded by mahogany shoot borer.
Meliaceae is a genus of eight species mainly distributed in africa and madagascar 3. Nutrient deficiency may adversely affect the growth and quality of seedlings in forest nurseries. Four triterpenoids from stem bark of khaya anthotheca article in phytochemistry 6610. Physical and mechanical properties of selected wood. Pdf physicochemical characterization of exudates from. Khaya senegalensis e khaya ivorensis j larix decidua c larix kaempferi c larix leptolepis c larix occidentalis f liquidamper styraciflua a lovoa klaineana j lovoa trichiloides j maesopsis eminii j mansonia altissima b millettia stuhimannii a mimusops heckelii b mitragyna ciliata e. Tree basal area models and density for selected plantation. African mahogany is the common name for a multitude of species variants, the two most common of which are khaya ivorensis and khaya senegalensis at j.
It grows many white flowers at the end of its branches. Harvested from central africa, our khaya ivorensis is known to offer a more consistently unifom color, and an evenly tex. Khaya ivorensis is a species in the african mahogany family. The wood species includes meliceae excelsa, khaya ivorensis, triplochiton scleroxylon, afzelia africana and celtis mildbraedii. General information khaya ivorensis is a very large evergreen tree which can be deciduous in drier climates, that attains a height of 40 50 metres. Khaya ivorensis name synonyms khaya caudata stapf khaya caudata stapf ex hutch. The purpose of this investigation was to determine the antiplasmodial activity of khaya ivorensis k and alstonia boonei a preparations in the murine malaria model plasmodium bergheianopheles stephensi, to estimate their prophylactic potential and to assess acute and subacute toxicity of the formulations prepared according to the traditional recipes. Mechanical values category green dry units weight 40 31 lbscu. Moreover, khaya ivorensis recorded significantly p ivorensis is the only mahogany species which could be selectively extracted from bowiye and draw forest reserves. Khaya antotheka cannot be sliced due to the hardness of this wood. Its ethanol stem bark extract has shown tissue toxicity, antimalarial and antiinflammatory activities 5. Khaya ivorensis is the highest quality lumber in the african mahogany family, and is considered an acceptable and costconscious alternative to genuine mahogany sweitenia macrophylla. Khaya senegalensis, khaya grandifoliola, khaya ivorensis, khaya.
Therefore, in this study the in vitro activities of the cold and hot extracts of the stem barks of the three khaya species used in the management of scd were evaluated using standard antisickling. Three species are found along the western african region and they are khaya senegalensis ks, khaya grandifoliola kg and khaya ivorensis ki. The biomass and charcoal characteristics of 7yearold khaya ivorensis indicated lower quality parameters than the main forest species used for energy purposes. Principally differentiation is made between two species. Acajou dafrique page 2 of 3 tropix 7 19982012 cirad dissemination without express authorization is prohibited 11262014 drying rapid slight risk no slight risk. It is well known that diameter variation can help explain volume variation. Khaya ivorensis is greatly used as timber and little is known about its extracts especially the essential oil of the seed. Heartwood and sapwood of two african mahogany species, khaya ivorensis and khaya senegalensis, were evaluated for resistance to decay by. Tepongning rn1, lucantoni l, nasuti cc, dori gu, yerbanga sr, lupidi g, marini c, rossi g, esposito f, habluetzel a.
Harvested from central africa, our khaya ivorensis is known to offer a more consistently unifom color, and an evenly textured grain, compared to other species of khaya. Gibson mcilvain, we only stock a couple of these species, and we keep close track of which is which so we can supply consistency in color, grain, and workability to our customers. Two new limonoids, namely 14,15didehydroruageanin a 1 and 3omethyl butyrylseneganolide a 2, were isolated from the fruits of khaya ivorensis along. Effects of macronutrient deficiencies on the growth and vigour of khaya ivorensis seedlings. Usually sold as either quartered or flat sawn grain. University of technology akure, ondo state, nigeria, between may 2012 and september 2012. The objectives of this study were, first, to determine and compare the growth of k. Meliaceae, a source of one of the most popular traditional african medicines, is mainly distributed throughout angola, cameroon, and nigeria adesida et al. The faounep tropical forest resources assessment project, signed on 8 november 1978 by both.
Pdf ecogeographic variation in leaf morphology of african. In plantations khaya ivorensis may suffer seriously from hypsipyla robusta shoot borers that kill the main stem of young trees, causing excessive branching and contributing to mortality. Khaya ivorensis, also called african mahogany or lagos mahogany, is a tall forest tree with a buttressed trunk in the family meliaceae. Tree growing in the african section of hoomaluhia botanical garden on oahu is it terminalia ivorensis. Khaya ivorensis and citrus sinensis were evaluated for their proximate composition, chemical properties and fatty acid profiles. Limonoids from the fruits of khaya ivorensis kailong ji 1,2, shanggao liao 3, xiaoling zheng 1,2, zhi na 1, huabin hu 1, ping zhang 1, and youkai xu 1. Khaya grandifoliola khaya ivorensis hypsipyla robusta attack. Pdf developing african mahogany khaya senegalensis. There may be also financial gains from combining fastgrowing species that. Other common names are gold coast mahogany, ivory coast mahogany, nigerian mahogany.
The bark on the young branches is smooth and greyishbrown but smooth to sometimes mottled grey and brown, flaking on the older branches and stems. Effect of overstory tree species diversity and composition. Pdf khaya senegalensiscurrent use from its natural range. In this study, the variation in chemical composition and natural durability of both plantation grown and natural african mahogany harvested in ghana were evaluated using tappi standards, astm d 175806 2008 and awpa e707 2008.
Interlocked grain is difficult to surface without tearing. Promotion and utilization of plantation grown timber species. Nov 11, 2016 little information exists on the properties of tropical tree species that are now being used in plantations in different tropical countries including ghana. Spatial characteristics and economic value of threatened.
National plant germplasm system covid19 update, march 23, 2020. The objectives of this study were to determine the initial effects of macronutrient deficiency on the growth and vigour of khaya ivorensis seedlings. The wood were machined and trimmed to standard size of 20mm x 20mm x 60mm for the. Khaya e um genero equatorial botanico pertencente a familia meliaceae, e nativo da africa. The timber of khaya is called african mahogany, and is valued as a substitute to genuine mahogany of the genus swietenia. African mahogany khaya ivorensis in integrated croplivestockforest system in the eastern amazon. Antisickling activities of the stem bark of three khaya. The structures of the limonoids isolated were determined by comparison of their 1 h and c nmr data with those reported in the literature. Guide technique du boisement programme solidarite eau. African mahoganys khaya ivorensis is a very large tree that attains a height of 4050 m and a dbh of up to 2 m. We determined the diurnal changes in psi and psii activities, light energy dissipation in psii and the p700 redox state in two tropical tree species erythrophleum guineense and khaya ivorensis grown in an open field. Limonoids from the fruits of khaya ivorensis kailong ji 1,2, shanggao liao 3, xiaoling zheng 1,2, zhi na 1, huabin hu 1, ping zhang 1, and youkai xu 1, 1 cas key laboratory of tropical plant resource and sustainable use, xishuangbanna tropical botanical garden, chinese academy of sciences, menglun, mengla, yunnan 666303, china. Antifungal activity of limonoids from khaya ivorensis.
Often further classified as to port of shipment or country of origin. Khaya ivorensis and khaya anthotheca meliaceae article pdf available june 2011 with 474 reads how we measure reads. Bole straight, unbranched up to 30 m above the ground with welldeveloped plank buttresses. Biomass compaction improved its energetic and physicalmechanical characteristics and is the indicated technique for the energetic use of 7yearold k. Lakehead university, faculty of forestry, thunder bay, ontario, canada. Potential of a khaya ivorensis alstonia boonei extract combination as antimalarial prophylactic remedy. The species were khaya anthotheca ka, khaya ivorensis ki, khaya grandifoliola. The diverse structures and significant biological activity of limonoids isolated from the meliaceae family have prompted continuous studies on this group of metabolites taylor, 1984, champagne et al. Growth the african mahogany khaya ivorensis in oxisol. Sep 01, 2011 potential of a khaya ivorensis alstonia boonei extract combination as antimalarial prophylactic remedy. Four triterpenoids from stem bark of khaya anthotheca. Its woody fruit is slightly thinner than those of khaya grandifoliola.
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