The color of khaya ivorensis heartwood varied from pale yellowish brown to deep reddishbrown. Khaya ivorensis im germplasm resources information network grin, usda, ars, national. Promotion and utilization of plantation grown timber species. All the compounds were evaluated for their cytotoxicity.
Sep 01, 2011 potential of a khaya ivorensis alstonia boonei extract combination as antimalarial prophylactic remedy. African journal of environmental science and technology 412. Andropogon gayanus straw and khaya ivorensis sawdust okwulehie, i. Evaluation of the chemical composition and natural durability.
Antibacterial and toxicological properties of essential oils. All species grow to around 3035m tall, rarely 45m, with a trunk over 1m diameter. Antifungal activity of limonoids from khaya ivorensis. Since the project was first conducted in malaysia, the study since the project was first conducted in malaysia, the study highlights the reforestation based on mosaic planting approach both by using naturally regenerated and. Taylor department of chemistry, university of natal, durban 4001, republic of south africa revised received 1 june 1977 key word indexhaya ivorensis. Pdf growth of khaya senegalensis plant under water deficit. Often further classified as to port of shipment or country of origin.
African mahogany khaya ivorensis tegs timbers timber. Department of agriculture agricultural research service. It is threatened by habitat loss khaya ivorensis is a species in the african mahogany family. Under the decree, uprooting or damage to this species is prohibited, as is the destruction of their fruits and seeds.
The work was carried out at ipameri, goias on a bench in full sun following. Khaya ivorensis, also called african mahogany or lagos mahogany, is a tall forest tree with a buttressed trunk in the family meliaceae. Khaya ivorensis and khaya anthotheca meliaceae researchgate. The development of clonal propagation could improve plantation establishment, which is currently impeded by mahogany shoot borer. 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. In this study, the chemical constituents of khaya ivorensis stem bark and their. Disclaimers contact wikipedia developers statistics cookie statement mobile view. Khaya ivorensis, also called african mahogany or lagos mahogany, is a tall forest tree with a.
Usually sold as either quartered or flat sawn grain. Please base your medical decisions only on the advice of a doctor or a registered medical professional. African mahoganys khaya ivorensis is a very large tree that attains a height of 4050 m and a dbh of up to 2 m. Dialairi ivory coast, ghana, akuk, ogwango nigeria, eri kiree uganda, bandoro sudan. These results only indicate the perceptions of the website users.
Pdf chemical composition and termiticidal activity of khaya. Meliaceae african mahogany benin mahogany senegal mahogany other common names. Ecogeographic variation in leaf morphology of african mahogany khaya anthotheca and khaya ivorensis provenances in ghana. Growth the african mahogany khaya ivorensis in oxisol. 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. Potential of a khaya ivorensis alstonia boonei extract. One of the first places mahogany wood was discovered was in belize, however it soon became known that the mahogany tree was indigenous to the americas. Who also stated that over 500,000 babies with severe forms of sickle cell disorder are born worldwide, with majority in low and middle income countries. The structures of the limonoids isolated were determined by comparison of their 1 h and c nmr data with those reported in the literature. Mansfelds world databas of agricultural and horticultural crops epic. The grain of african mahogany is interlocked and can include quite figured flames. 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. Arten mak value documentation in german language, 1997.
West african species are reasonably stable in service. Moreover, khaya ivorensis recorded significantly p family. Khaya senegalensis in the germplasm resources information network grin, u. Little information exists on the properties of tropical tree species that are now being used in plantations in different tropical countries including ghana. The paper has been read and approved by all named authors. The species are native to tropical africa and madagascar. Pdf four clones of khaya ivorensis were grown in tropical glasshouses in. Find, read and cite all the research you need on researchgate. 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. Khaya ivorensis is greatly used as timber and little is known about its extracts especially the essential oil of the seed. Antisickling activities of the stem bark of three khaya. The objective of the present study was to evaluate the initial growth of khaya senegalensis plants under water deficit.
Natural resistance of plantation grown african mahogany. 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 is a genus of five species of trees in the mahogany family meliaceae. Electronic plant information centre of royal botanic gardens, kew. Wood database and searchable library woodworkers source. Oct 22, 2004 chemical investigation of the diethyl ether extract of the stem bark of khaya ivorensis a chev meliaceae afforded ten limonoids of angolensates, ring d. Khaya ivorensis is found in various habitat types in west and central africa. African mahoganies are among the most valuable tropical timbers and important export in the international timber market. The following are the results of ongoing survey on for khaya ivorensis. Unlike other khaya species which do not require much rainfall, it is reported to. Growth the african mahogany khaya ivorensis in oxisol yellow in the integrated croplivestockforest system in eastern amazon arystides r. May 05, 2016 the objective of the present study was to evaluate the initial growth of khaya senegalensis plants under water deficit. Potential of a khaya ivorensis alstonia boonei extract combination as antimalarial prophylactic remedy. Khaya grandifoliola khaya ivorensis hypsipyla robusta attack.
Moreover, khaya ivorensis recorded significantly p ivorensis is the only mahogany species which could be selectively extracted from bowiye and draw forest reserves. Khaya senegalensis is a multipurpose african timber species. Wood properties and processing outcomes for plantation. Department of plant sciences and biotechnology, michael okpara university of agriculture, umudike department of chemistry, michael okpara university of agriculture, umu abstract. Mechanical values category green dry units weight 40 31 lbscu. 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. Heartwood and sapwood of two african mahogany species, khaya ivorensis and khaya senegalensis, were evaluated for resistance to decay by five woodrot fungi as well as to feeding by subterranean termites in laboratory tests. To examine its potential for clonal propagation, the effects of cutting length, leaf area, stockplant maturation, auxin, and smoke solution treatments were investigated. 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. Medium bending and crushing strengths, although steam bending is not recommended. Wood properties and processing outcomes for plantation grown african mahogany khaya senegalensis trees from clare, queensland 18 and 20 years and katherine, northern territory 14 years 3 introduction khaya senegalensis, african mahogany, a highvalue hardwood, was introduced in the. Khaya ivorensis in the germplasm resources information network grin, u. Pdf vegetative propagation of khaya ivorensis african mahogany. The timber of khaya is called african mahogany, and is valued as a substitute to genuine mahogany of the genus swietenia.
Khaya anthotheca is a large, fastgrowing, semideciduous tree with a dense crown, sometimes exceeding 60 metres in height, producing abundant panicles of fragrant, white flowers 303 title. From then, exportation has radically decreased from the natural forest to 17,000m. Bole straight, unbranched up to 30 m above the ground with welldeveloped plank buttresses. Evaluation of the chemical composition and natural. The manual readings of the dbh through the circumference were taken by. The timber species, khaya ivorensis about 40 yr were felled from both the natural forest and plantation plot of the forestry research institute of ghana forig at amantia in the moist semideciduous forest zone of ghana. Khaya grandifoliola khaya ivorensis khaya madagascariensis khaya senegalensis. Hardness of the wood varied from soft to moderate hard. In some cases, dark reddish brown heartwood was easy to distinguish from pale yellowish brown sapwood. Khaya ivorensis name synonyms khaya caudata stapf khaya caudata stapf ex hutch. In addition, density values were evaluated and examined for correlation to the observed natural durability properties. The structure of an extractive from khaya ivorensis.
A ban on the export of timber in log form was introduced in ghana. Restoration of degraded dry semideciduous forest ecosystems. Genus khaya 1khag species khaya ivorensis khaiv contact eppo. Mahogany is a type of wood that is simply described as having straightgrains and a reddishbrown hue of timber. Pdf this study investigated the pattern of leaf morphometric variation and similarities.
Common names africanmahogany in english ivory coast khaya in english lagosmahogany in english. The results indicated that khaya ivorensis stem bark has potential as a natural agent for. Pdf ecogeographic variation in leaf morphology of african. Khaya anthotheca and khaya ivorensis have a wide natural distribution in ghana. It is found in angola, cameroon, cote divoire, gabon, ghana, liberia, and nigeria where it grows primarily in lowland tropical rainforests. Two new limonoids, namely 14,15didehydroruageanin a 1 and 3omethyl butyrylseneganolide a 2, were isolated from the fruits of khaya ivorensis along with six known limonoids. The goal of this study was to examine natural resistance of plantationgrown african mahogany khaya spp. Title world agroforesty centre publication author website. Tepongning rn1, lucantoni l, nasuti cc, dori gu, yerbanga sr, lupidi g, marini c, rossi g, esposito f, habluetzel a. Interlocked grain is difficult to surface without tearing.
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