There are several economic Importance of algae such as they are used as a food source, a fodder, in fish farming, as a fertilizer and they also used in medical industries. Nutritional and socio-economic value of Gnetum leaves in Central African Forest. Young leaves and inflorescence of Gnetum gnemon and G. latifolium are cooked as vegetable. While at a border market - Idenau, the turnover is in the tone of one million US dollars. 1 Former Programme Manager, Mount Cameroon Project, Limbe, Cameroon. If nothing is done, Gnetum will not continue to be a source of livelihood to thousands of people, most of whom are women. pl. This is a question and answer forum for students, teachers and general visitors for exchanging articles, answers and notes. In the wild, the species grow and form underground tuber or root that forms food reserves. A fiber of high tensile strength is obtained from the bark of Gnetum gnemon and G. latifolium, and used for making fishing nets and ropes. Order – Cycadales . The seeds of some species are edible. Content Guidelines 2. . 2. This increase in demand, coupled with the absence of a good management system, seriously threatens the resource base. Seeds of Gnetum gnemon, G. latifolium and G.ula are eaten after boiling or roasting. Uses of Gymnosperms. 5. Economic Importance of Algae in Food A. People don’t understand the importance of the Gnetum Africanum popularly known as Okazi leaf.. Its a green leafy vegetable used in preparing various delicacies,cusines and recipes her in Nigeria and other African countries such as Congo,Gabon, Angola, Asia and South America. ‘Seed starch’ obtained from seeds of Cycas rumphii, Dioon edule etc. genera i.e. Mialoundama, F., 1993. There are uses for all parts of the Ginkgo tree. However, to ensure sustainability of the species, the domestication programme needs to go along with the development of sustainable management systems for the wild population, and the enactment of an effective legal system to guide the harvesting and trading of the species. Gnetum produced from farms will contribute to maintaining the Gnetum trade, ensure the flow of benefits to the rural poor, and reduce the pressure on the wild population. (With Methods)| Industrial Microbiology, How is Cheese Made Step by Step: Principles, Production and Process, Enzyme Production and Purification: Extraction & Separation Methods | Industrial Microbiology, Fermentation of Olives: Process, Control, Problems, Abnormalities and Developments, The best answers are voted up and rise to the top. If compared with other highly valued forest products as timber, Gnetum trade touches the life of … Economic Importance of Gymnosperms: ADVERTISEMENTS: 1. Which part of the male reproductive system store the sperm? 3. 262 Downloads; Abstract. A planted Gnetum plant can produce about 1.9kg of leaves every six months. The African species of Gnetum are dioecious climbers and only two species (Gnetumafricanum Welw. ‘Sago’ starch obtained from pith and cortex of stem of C. revolute, C. rumphi etc. In India, the ephedrine is obtained from Ephedra gerardiana, E. intermedia, E. nebrodensis and E. sinica. Gnetum is a genus of about 30 species of vine to tree-like plants growing in Brazil, tropical west Africa, wet parts of India, and south-east Asia. These two species are very similar and can only be distinguished by the shape of the leaves and character of the male reproductive parts (Lowe 1984, Carlquist & Robinson 1995). Economic Importance of Viruses. Monitoring of the performance of Gnetum plants was monthly with the participation of the farmers and the agricultural extension staff. 1:125. 4. 6. Gymnosperms are found in the temperate zones as well as higher tropics. Burkill, H. M., 1994. Gnetum by Vasil, V. and a great selection of related books, art and collectibles available now at AbeBooks.co.uk. Ephedra gerardiana tincture is effective as a cardiac and circulatory stimulant. In Hladik, C. M. et al., Tropical Forest, people and food: Biocultural interactions and applications to development. The two species occur in S.E. Nkefor, J.P., 2000. Limbe Botanic Garden has developed methods for the propagation and cultivation of the two species of Gnetum. Cycas . Economic importance of gymnosperms  As food  Seeds of some species are edible: Cycas, Ginko, Pinus, Gnetum  The seeds and stems of cycas yield ‘sago’ which is a starch and is also called “arrow root”. Thuja sp. The strongest Indian coniferous wood is used for making Railway slippers is deodar wood obtained from Cedrus Deodara. The heart wood of this tree is resistant to insect/ fungus attacks & has strong scent. Pteridophytes are used in the horticulture. Order – Cycadales . The permit is for one year and specifies the volume. Dry fronds of many ferns are used as a cattle feed. The African species of Gnetum are dioecious climbers and only two species (Gnetum africanum Welw. Most governments are still grappling with this to come up with what can be recommended as sound management systems for most of the NTFPs in the wild. The leaves are highly valued as a nutritious green vegetable and today, as an article of considerable cross-border trade, extending to Europe and America. Pteridophytes are also used as a medicine. In these situations the areas will require some active interventions if Gnetum is to grow there again. Economic importance includes a traditional use as a tea (Mormon tea) in s.w. Pines are also used for the manufacture of turpentine, rosin, pulp, and paper. Harvesting for commercial purposes attracts some taxes through a special permit that is obtained from the relevant government ministry. Fatty oils. Molecular phylogenies based on nuclear and plastid sequences from most of the species indicate hybridization among some of the Southeast A… Royal Botanic Garden Kew. If compared with other highly valued forest products as timber, Gnetum trade touches the life of more people in the rural areas. There is limited and requires that similar initiatives in countries where Gnetum naturally occurs so that the genetic variation can be secured. Dioon edule etc, Mount Cameroon Project, Limbe, Cameroon a propagator was to. Difference between Ephedra and Gnetum | Gnetales areas where they can be categorized in the of... Of this product in Cameroon, they can ` t do metabolic process without a host.. To solve our economic problems pteridophytes are economically very important paper ornamental of... 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