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EARLY INDUCTION OF SPROUTING ON SEED TUBERS OF YAM (Dioscorea spp.) SOON AFTER TUBER INITIATION IN A HYDROPONICS SYSTEM

Published online by Cambridge University Press:  16 September 2015

E. AWOLOGBI  and
E. I. HAMADINA
E. AWOLOGBI
Affiliation:
University of Port Harcourt, Choba, Rivers State, Nigeria
E. I. HAMADINA*
Affiliation:
University of Port Harcourt, Choba, Rivers State, Nigeria
*
†Corresponding author. Email: elsie.hamadina@uniport.edu.ng
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Summary

Prolonged inability of yam tubers to sprout/germinate is associated with the expression of tuber dormancy, and the start of dormancy in tubers is linked to the onset of tuber formation. Although the plant hormone, abscisic acid (ABA) is known to regulate the onset and maintenance of dormancy in tubers, there are no known method(s) of inducing shoot growth (sprouting) on seed yam tubers that are harvested at 240 days after vine emergence or earlier. Therefore, this study was conducted to: (1) determine whether the absorption of fluridone, a reputed ABA inhibitor, prior to or during early seed yam tuber formation would induce sprouting, and (2) determine the effect of fluridone on early shoot growth. The study was a 2×4 factorial experiment arranged in a Completely Randomized Design (CRD) with eight treatment combinations replicated three times. Two species of yam with long dormancy durations were used: D. rotundata var TDr 131 and D. alata var TDa 98/01166; and three concentrations of fluridone were tested (30, 50, 100 µM). Young plants (69 days after vine emergence) of TDr 131 and TDa 98/01166 were grown in a coco coir medium hydroponics system using Hoagland's Nutrient Solution, with or without the test fluridone concentrations. In all fluridone treatments, most leaves of both species of yam had 30–90% of their surface bleached while the stems appeared purplish. In both Controls, all the newly formed seed tubers that were harvested at 90 and 104 days after vine emergence were dormant (devoid of any new shoots/sprouts). In contrast, over 70% of the seed tubers that developed in 30 and 100 µM fluridone had at least one new shoot, particularly in TDa 98/01166. The fluridone treatments did not significantly affect tuber weight or vegetative growth parameters like dimensions and number of leaves. This study has shown that the duration from vine emergence of the old tuber to sprouting of the new tuber can be reduced by more than half if young plants absorbed fluridone during early tuber development.

Type
Research Article
Information
Experimental Agriculture , Volume 52 , Issue 3 , July 2016 , pp. 405 - 417
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Copyright
Copyright © Cambridge University Press 2015 

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References

REFERENCES

Claassens, M. M. J. and Vreugdenhil, D. (2000). Is dormancy breaking of potato the reverse of tuber initiation. Potato Research 43:347–369.Google Scholar
Comar, C. L. and Zscheile, F. P. (1942). Analysis of plant extracts for chlorophyll a and b by a photoelectric spectrophotometric method. Plant Physiology 17:198–209.Google Scholar
Coursey, D. G. (1967). Yams. Longmans, London: Green and Co. Ltd.Google Scholar
Craufurd, P. Q., Summerfield, R. J., Asiedu, R. and Vara Prasad, P. V. (2001). Dormancy in yams (Dioscorea spp). Experimental Agriculture 37:147–181.Google Scholar
Dansi, A., Mignouna, H. D., Zoundjihekpon, J., Sangare, A., Asiedu, R. and Quin, F. M. (1998). Varietal identification key of the cultivated yams (Dioscorea cayenensis - Dioscorea rotundata complex) of Benin Republic. Plant Genetic Resources Newsletter 116:18–25.Google Scholar
Food and Agricultural Organization of the United Nations (FAO) (2008). Corporate Statistical Database: Statistical Yearbook 2007-2008. Rome: FAO.Google Scholar
Food and Agricultural Organization of the United Nations (FAO) (1997). Food and Agricultural Organization: Food Production Yearbook. Rome: FAO.Google Scholar
Hahn, S. K. (1995). Yams: Dioscorea spp. (Dioscoreaceae). In Evolution of Crop plants, 112–120. London, UK: Longman Scientific and Technical.Google Scholar
Hamadina, E. I. (2011a). The Control of Yam Tuber Dormancy: A Framework for Manipulation. Ibadan, Nigeria: International Institute of Tropical Agriculture (IITA).Google Scholar
Hamadina, E. I. (2011b). Origin of vines, feeder roots and tubers in yam (Dioscorea spp.): the tuber head or the primary nodal complex? Nigerian Journal of Agriculture, Food and Environment 8:67–72.Google Scholar
Hamadina, E. I. and Craufurd, P. Q. (2015). Duration of tuber dormancy in yam (Dioscorea rotundata): effect of plant growth regulators and its relationship with tuber age. Jouranl of Advance in Biology 7:1230–1237.Google Scholar
Hamadina, E. I., Craufurd, P. Q., Battery, N. H. and Asiedu, R. (2010). In vitro micro-tuber initiation and dormancy in yam. Annals of Applied Biology 157:203–212.Google Scholar
Hoagland, D. R. and Arnon, D. I. (1950). The Water Culture Method for Growing Plants without Soil. C347, Berkley CA: College of Agriculture, University of California.Google Scholar
Ile, E. I., Craufurd, P. Q., Battey, N. H. and Asiedu, R. (2006). Phases of dormancy in yam tubers (Dioscorea rotundata). Annals of Botany 97:497–504.CrossRefGoogle ScholarPubMed
Kim, K. S., Davelaar, E. and De Klerk, G. J. N. (1994). Abscisic acid controls dormancy development and bulb formation in lily plantlets regenerated in vitro . Physiologia Plantarum 90:59–64.CrossRefGoogle Scholar
Mijinyawa, Y. and Alaba, J. O. (2013). A comparative analysis of barn and platform as storage structures for yam tubers in Ibadan Nigeria. African Journal of Agricultural Research 8:4115–4121.Google Scholar
Mulwa, R. M. S. and Nwanza, L. M. (2006). Biotechnology approaches to developing herbicide tolerance/selectivity in crops. African Journal of Biotechnology 5:396–404.Google Scholar
Nweke, F. I., Ugwu, B. O., Asadu, C. L. A. and Ay, P. (1991). Production costs in the yam-based cropping systems of South-eastern Nigeria. Resource and Crops Management Programme, Research Monograph No. 6, IITA Ibadan, Nigeria.Google Scholar
Onayemi, O. (1983). Observations on the dehydration of different varieties of yam and cocoyam. Abstract, 6th Symposium of the Int. Soc. For. Trops. Peru, Febuary, 1983.Google Scholar
Orkwor, G. C. and Asadu, C. L. A. (1998). Agronomy. In: Food Yams: Advances in Research, 105–141 (Eds Orkwor, G. C., Asadu, R. and Ekanayake, I. J.). Nigeria: NRCRI and IITA Ibadan.Google Scholar
Orkwor, G. C. and Ekanayake, I. J. (1998). Growth and development. In: Food Yams: Advances in Research, 39–62 (Eds Orkwor, G. C., Asadu, R. and Ekanayake, I. J.). Nigeria: NRCRI and IITA Ibadan.Google Scholar
Sanderman, G. and Boger, P. (1989). Inhibition of carotenoid biosynthesis by herbicides. In Target Sites of Herbicide Action, 25–44 (Eds Boger, P. and Sanderman, G.). Boca Raton, FL, USA: CRC Press.Google Scholar
Sandmann, G. and Mitchell, P. (2001). In vitro inhibition studies of phytoene desaturase by bleaching ketomorpholine derivatives. Journal of Agricultural Food Chemistry 49:138–141.Google Scholar
Suttle, J. C. (2004). Physiological regulation of potato tuber dormancy. American Journal of Potato Research 81:253–262.Google Scholar
Suttle, J. C. and Hultstrand, J. F. (1994). Role of endogenous abscisic acid in potato micro tuber dormancy. Plant Physiology 105:891–896.Google Scholar
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 43:103–107.Google Scholar
Ugwu, B. O. (1990). Resource use and productivity in food crop production in major yam producing areas of South Eastern Nigeria. PhD. Dissertation, University of Nigeria, Nsuka.Google Scholar
Yamazaki, H., Nishijima, T., Yamato, Y., Hamano, M. and Miura, H. (1999). Involvement of Abscisic acid in bulb dormancy of Allium wakegi Araki. II. A comparison between dormant and non dormant cultivars. Plant Growth Regulation 29:195–200.Google Scholar