Effect of Provenance and Storage Agroecology on Duration of Yam (Dioscorea rotundata Poir.) Tuber Dormancy
Agriculture, Forestry and Fisheries
Volume 4, Issue 3, June 2015, Pages: 95-100
Received: Apr. 5, 2015; Accepted: Apr. 15, 2015; Published: Apr. 22, 2015
Views 4024      Downloads 155
Elsie Ihuakwu Hamadina, Crop and Soil Science Department, Faculty of Agriculture, University of Port Harcourt, Port Harcourt, Nigeria
Robert Asiedu, International Institute of Tropical Agriculture, IITA, Ibadan, Nigeria
Article Tools
Follow on us
Crop improvement in yam is slow due to poor understanding of tuber dormancy. Tuber provenance and storage agroecology are thought to affect the duration to sprouting in yam, but systematic studies on the role of these factors are rare. The objective of this study was to determine the effects of tuber provenance and storage agroecology on the duration to sprouting in D. rotundata. Twenty landraces [comprising 7 originating from the Guinea savanna (GS), 5 from the Forest/transition (TS), and 8 from the Humid forest (HF)] were collected and multiplied at a location in their respective agroecologies: Abuja (GS), Ibadan (TS) and Onne (HF). Thereafter, 100 tubers of each of the 20 landraces were stored at each of the three sites, and dates of the appearance of shoot bud (ASB)/ sprouting were recorded. The results showed that provenance did not significantly affect the duration from planting to sprouting or the duration from date in storage to sprouting in D. rotundata. The duration to ASB varied by up to 21 days (d) for landraces originating from HF and TS, and 37 d for landraces originating from GS. Variations among landraces within a provenance group were greater than between provenance groups. This suggests that the provenance of a landrace is not a major factor controlling the duration to ASB. All landraces responded to storage agroecology/ environment in a similar manner. There was no interaction between provenance and storage environment. Tubers stored at Onne and Ibadan sprouted about 10 d earlier than those at Abuja, and this was associated with slightly higher temperature and RH at Onne and Ibadan. Storage agroecology is an important factor controlling the duration to sprouting but provenance is not.
Provenance, Dioscorea Rotundata, Humid Forest, Guinea Savanna, Forest Transition
To cite this article
Elsie Ihuakwu Hamadina, Robert Asiedu, Effect of Provenance and Storage Agroecology on Duration of Yam (Dioscorea rotundata Poir.) Tuber Dormancy, Agriculture, Forestry and Fisheries. Vol. 4, No. 3, 2015, pp. 95-100. doi: 10.11648/j.aff.20150403.13
Roberts, E. H. and Summerfield, R. J. (1987). Measurement and Prediction of Flowering in Annual Crops. In: Manipulation of Flowering (eds J. G. Atherton), pp.17-50. Butterworths, London.
Roberts, E. H. and Summerfield, R. J. (1987). Measurement and Prediction of Flowering in Annual Crops. In: Manipulation of Flowering (eds J. G. Atherton), pp.17-50. Butterworths, London.
Leopold, C. A. (1996). Natural History of Seed Dormancy. In: Plant Dormancy: Physiology, Biochemistry and Molecular Biology (ed G. A. Lang), pp.3-16. CAB International, Wallingford.
Lang, A. (1952). Physiology of flowering. Annual Review of Plant Physiology, 3, 265-306.
Lang, G. A., Early, J. D., Martin, G. C. and Darnell, R. (1987). Endo-, para-, and ecodormancy: physiological terminology and classifications for dormancy research. HortScience, 22, 371-377.
Passam, H. C. (1982). Dormancy of Yams in Relation to Storage. In: Yams- Ignames (eds J. Miege and N. Lyonga), pp.285-293. Oxford: OUP.
IITA, (1997). Project 13- Improvement of Yam-base Systems. Annual Report 1997. IITA Ibadan, Nigeria.
Barker, D. J., Keatinge, J. D. H. and Asiedu, R. (1999). Yam dormancy: potential mechanisms for its manipulation. Tropical Science, 39, 168-177.
Coursey, D. G. (1976). The Origins and Domestication of Yams in Africa. In: Origins of African Plant plant Domestication (ed. J. R. Harlan), pp.383-408. Mouton, La Hague.
Coursey, D. G. (1967). Yams. Longmans, Green and Co. Ltd, London
Ile, E. I. (2004). Control of Tuber Dormancy and Flowering in Yam (Dioscorea rotundata Poir.) tuber. PhD thesis, The University of Reading, Reading UK.
Orkwor, G. C. (1998). The importance of yams. In: Food Yams: Advances in Research (eds G.C. Orkwor, R. Asiedu and I. J. Ekanayake), pp. 1-12. NRCRI and IITA, Ibadan, Nigeria.
Degras, L. (1993). The Yam: A Tropical Root Crop. (ed R. Costo). MacMillan, London.
Okoli, O. O. (1980). Dry matter accumulation and tuber sprouting in yams Dioscorea spp.). Experimental Agriculture, 16, 161-167.
Alexander, J. and Coursey, D. G. (1969). The Origins of Yam Cultivation. In: The Domestication and Exploitation of Plants (eds P. J. Ucko and G. W. Dimbleby), pp. 405- 425. London: Duckworth.
Arnolin, R. (1982). Vegetative Cycle of the Yam D. alata cv. Tahiti and Belep: Influence of Spaced Planting. In: Proceedings 18th Annual Meeting, Caribbean Food Crops Society, Mayaguez, Puerto Rico University, Puerto Rico. pp.146-169. Caribbean Food Crops Society
Swanell, M. C., Wheeler, T. R., Asiedu, R. and Craufurd, P. Q. (2003). Effect of harvest date on the dormancy period of yam (Dioscorea rotundata). Tropical Science 2003, 43, 103-107.
Shiwachi, H., Ayankanmi, T., Asiedu, R. and Onjo, M. (2003). Induction of germination in dormant yam (Dioscorea spp.) tubers with inhibitors of gibberellins. Experimental Agriculture, 39, 209-217.
Njoku, E. (1963). The propagation of yams Dioscorea spp. by vine cuttings. Journal of West African Science Association, 18, 29-32.
U.S.D.A, (United States Departments of Agriculture) (1972). Yam Production Methods. In: Production Research Report No. 147. U.S.D.A. USA.
Passam, H. C. (1977). Sprouting and apical dominance of yam tuber. Tropical Science, 19, 29- 39.
Mozie, O. (1984). Influence of ventilation and humidity during storage on weight and quality changes of white yam tubers Dioscorea rotundata Poir. Journal of the University of Puerto Rico, 68, 341-348.
Ile, E. I. P. Q. Craufurd, N. H. Battey and R. Asiedu (2006). Phases of tuber dormancy in yam (Dioscorea rotundata Poir.), Annals of Botany 97; 497-504.
Science Publishing Group
1 Rockefeller Plaza,
10th and 11th Floors,
New York, NY 10020
Tel: (001)347-983-5186