Distribution, Diversity and Potential Production of Yams (Dioscorea spp.) in Sheko District, Southwest Ethiopia
American Journal of Life Sciences
Volume 5, Issue 3, June 2017, Pages: 86-92
Received: Mar. 21, 2017; Accepted: Mar. 31, 2017; Published: May 17, 2017
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Belachew Garedew, Department of Biology, College of Natural and Computational Science, Wolkite University, Wolkite, Ethiopia
Bewuketu Haile, Department of Horticulture, College of Agriculture and Natural Resource, Mizan-Tepi University, Mizan-Teferi, Ethiopia
Aklilu Ayiza, Department of Biology, College of Natural and Computational Science, Mizan-Tepi University, Tepi, Ethiopia
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Yams are the Dioscoreaceae vine plants grown as staple food in tropical and sub-tropical regions that produce underground tubers or aerial bulbs. This researchwas developed with objective of assessing the distribution, diversity and potential production of yams (Dioscorea spp.) in sheko district, Bench Maji Zone, Ethiopia. A total of 147 informants were selected from six Kebeles using purposive and random sampling method. Reliable data were collected from households using semi-structured questionnaires, focus group discussions and field observations which were analyzed by using Microsoft excel and descriptive statistics. A total of 3 different types of yam species (Dioscorea abyssinica, Dioscorea alata and Dioscorea bulbifera) were recorded from Sheko district. Yams were identified as a main staple food for the Sheko people. Four well adopted varieties selected by indigenous farmers of Sheko district were identified; among white yam is most preferred one due to its taste and high yield performance. The findings of the study revealed that most of the farmers (96.8%) highly practicing intercropping whereas few farmers (3.2%) practice monoculture mode of cultivation. Farmers’ indigenous experience on production of yam crops in almost all representative kebeles of the District was observed to be tremendous. Therefore, indigenous knowledge of farmers must be valued and supported by research to analyze the productive variety and further improved production and post harvest technology should be introduced.
Distribution, Indigenous Knowledge, Production, Yams
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Belachew Garedew, Bewuketu Haile, Aklilu Ayiza, Distribution, Diversity and Potential Production of Yams (Dioscorea spp.) in Sheko District, Southwest Ethiopia, American Journal of Life Sciences. Vol. 5, No. 3, 2017, pp. 86-92. doi: 10.11648/j.ajls.20170503.12
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Agbaje, G. O., Adegbite, A. A., Akinlosotu, T. A., 2003. Performance of new hybrid yam (D.rotundataPoir) varieties in the forest zone of Nigeria.Tropicultura21 (3):149-152.
Amadi, C. O, Ekwe, K. C., Chukwu, G. O, Olojede, A. O. and Egesi, C. N. (ed) (2011). Root and tuber crops: research for food security and empowerment. Page 33-182.
Ben G. B. 2010. Classification of crops and their role in human nutrition. OSU Extended Campus. Retrieved, Oregon State University. n.d.
Bourke, R. M. and Vlassak, V. 2004. Estimates of food crop production in Papua New Guinea, ANU Canberra.
Bradshaw, J. E, editor. 2010. Root and Tuber Crops. Handbook of Plant Breeding, Vol. 7. Springer Verlag, London.
Edgerton, M. D. 2009. Increasing crop productivity to meet global needs for feed, food, and fuel.Plant Physiology.2009, 149: 7-13.
Edison S., M. Unnikrishnan, B. Vimala, Santha V. Pillai, M. N. Sheela, M. T. Sreekumari and K. Abraham 2006. Biodiversity of Tropical Tuber Crops in India. NBA Scientific Bulletin Number - 7, National Biodiversity Authority, Chennai, Tamil Nadu, India, p60.
IBC 2008. Ethiopia: Second Country Report on the State of PGRFA to FAO, Addis Abeba, Ethiopia. IFPRI Issue brief, September 2008. Washington DC.
IITA 2010. International Institute of Tropical Agriculture. "Yam" http://old.iita.org/cms/ details/research summary.aspx? Article id=268&zoneid=63.
Ikeorgu J. E. G. 2000. Root and Tuber Crops of Nigeria: Production, Challenges and Future. In: Akoroda M. O. (Ed.) Agronomy in Nigeria. pp. 60-69.
Iyagba A. G.2010. A review on root and tuber crop production and their weed management among small scale farmers in Nigeria. ARPN Journal of Agricultural and Biological Science. 5(4): 52-57.
Izekor and Olumese, 2010. "Determinants of yam production and profitability in Edo State, Nigeria". African Journal of General Agriculture. 6:pp443-448.
Joseph A. O., Andrew E. E., George B. C., Pascal T. T. 2016. Diversity of Yam (Dioscorea spp.)Populations in South Western Region of Cameroon.American Journal of Life Sciences. Vol. 4, No. 6, pp. 187-194. doi: 10.11648/j.ajls.20160406.17.
Lebot, V. 2009. Tropical root and tuber crops Cassava, sweet potato, yams and aroids. Publ. CABI. 413p.
Magurran A. E 1988. Ecological diversity and its measurement. Croom Helm, London.
Mekbib, Y. and T. Deressa 2016. Exploration and collection of root and tuber crops in East Wollega and Ilu ababoa zones: recruiting declining genetic resources. Indian journal of Traditional Knoeledgw. Vol. 15(1).Pp.86-92.
Mignouna, H. D., Abang, M. M., & Asiedu, R. 2003. Harnessing Modern Biotechnology for Tropical Tuber Crop Improvement: Yam (Dioscorea spp.) Molecular Breeding. Available online.
Mignouna, H. D., and A. Dansi. 2003. Yam (Dioscoreaspp.) domesticated by the Nago and Fonethnic groups in Benin. Genet. Res. Crop Evol. 50:519–528.
Sanginga, N. 2015. Root and Tuber Crops (Cassava, Yam, Potato and Sweet Potato). An action plan for African agricultural transformation.
Scott, G. J., Rosegrant M. and Ringler C. 2000. Roots and tubers for the 21st century: Trends, projections and policy options. Food, Agriculture and the Enviornment Discussion Paper 31.
Tamiru, M. 2006. Assessing diversity in yams (Dioscoreaspp.) from Ethiopia based on morphology, AFLP markers and tuber quality, and farmers’ management of landraces. (Ph.D). diss. Georg-August Universitat, Gottingen, Cuvillier Verlag Gottingen, Germany. P.2-9.
Tamiru, M., Becker, H. C. and Maass, B. L. 2007. Diversity, distribution, and management of yam landraces (Dioscorea spp.) in southern Ethiopia. Genet. Resour. Crop Evol. doi: 10.101007.
Yamane, Taro 1967. Statistics: An Introductory Analysis, 2nd Ed., New York: Harper and Row.
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