Asexual Propagation of Sheanut Tree (Vitellaria paradoxa C.F. Gaertn.) Using a Container Layering Technique

Naalamle Amissah, Brain Akakpo, Julius Yeboah, Essie Blay

Cocoa Research Institute of Ghana (CRIG), Bole, Ghana..
Department of Crop Science, College of Agriculture and Consumer Sciences, University of Ghana, Accra, Ghana;.

DOI: 10.4236/ajps.2013.49216                

Abstract

In spite of the economic potential of the sheanut tree (Vitellaria paradoxa), its domestication still has not been achieved due to the long juvenile period of seed propagated plants and the absence of a reliable vegetative propagation method. Three experiments were conducted by using a modified container layering technique to investigate the effects of season (rainy and dry season), light treatments (etiolation and natural light) and indole 3-butyric acid (IBA) on root formation in juvenile and mature sheanut trees. The effect of light treatments on the internal conditions such as level of sugars (soluble, insoluble and total sugars) and total free phenols in layered sheanut shoots was also considered. Rooting was generally lower in the mature trees (27.9%) compared to that in juvenile 4 year-old plants (40.9%). Etiolation increased the levels of total sugars and phenols in shoots of 4-year-old plants and mature fruit bearing trees, but this increase did not significantly enhance rooting in both the juvenile and mature sheanut trees. The container layering technique holds promise as a method for the asexual propagation of sheanut planting material. Roots formed using this method looked healthy and were vertically orientated giving layered shoots a better chance at survival.

Keywords

Etiolation; Container Layering Technique; Indolebutyric Acid; Sheanut Tree

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	A. Nikiema and B. E. Umali, “Vitellaria paradoxa C.F. Gaertn. [Internet] Record from Protabase,” In: H. A. M. van der Vossen and G. S. Mkamilo, Eds, PROTA (Plant Resources of Tropical Africa, Wageningen, 2007. http://database.prota.org/search.htm
[2]	F. R. Irvine, “Woody Plants of Ghana with Special Reference to Their Uses,” Oxford University Press, London, 1961.
[3]	J. N. Fobil, “Research and Development of the Shea Tree and Its Products,” 2008. www.solution.site.org/artman
[4]	J. B. Hall, D. P. Aebischer, H. F. Tomlinson, E. OseiAmaning and J. R. Hindle, “Vitellariaparadoxa, a Monograph, Project B4850,” Forestry Research Progaramme, School of Agricultural Sciences, University of Wales, Bangor, 1996, p. 105.
[5]	A. Grolleau, “Contribution Al’Etude de la Multiplication Vegetative par Greffage du Karité (Vitellaria paradoxa Gaertn. f. = Butryospermum paradoxum Hepper),” Bois et Forets des Tropiques, No. 222, 1989, pp. 38-40.
[6]	Z. Teklehaimanot, H. Tomlinson, T. Lemma and K. Reeves, “Vegetative Propagation of Parkiabiglobosa (Jacq.) Benth, an Undomesticated Fruit Tree from West Africa,” Journal of Horticulture Science, No. 71, 1996, pp. 205-215.
[7]	P. N. Lovett and N. Haq, “Evidence for Anthropic Domestication of the Sheanut Tree (Vitellaria paradoxa),” Agroforest System, No. 48, 2000, pp. 273-288.
[8]	K. Opoku-Ameyaw, F. M. Amoah and J. Yeboah, “Studies into Vegetative Propagation on the Sheanut Tree (Vitellaria paradoxa Gaertn),” Journal of Ghana Science Association, Vol. 4, No. 2, 2002, pp. 138-145.
[9]	H. Sanou, S. Kambou, Z. Teklehaimanot, M. Dembele, H. Yossi, S. Sina and L. Djingdia, “Vegetative Propagation of Vitellaria paradoxa by Grafting,” Agroforestry Systems, Vol. 60, No. 1, 2004, pp. 93-99. doi:10.1023/B:AGFO.0000009408.03728.46
[10]	J. A. Yidana, “Progress in Developing Technologies to Domesticate the Cultivation of Shea Tree (Vitellaria paradoxa L.) in Ghana,” Agricultural and Food Science Journal of Ghana, Vol. 3, 2004, pp. 249-268.
[11]	J. Yeboah, S. T. Lower and F. M. Amoah, “The Rooting Performance Shea (Vitellaria paradoxa C.F. Gaertn) Cuttings Leached in Water and Application of Rooting Hormones in Different Media,” Journal of Plant Science, No. 4, 2009, pp. 10-14. doi:10.3923/jps.2009.10.14
[12]	P. W. Hackett, “Juvenility, Maturation and Rejuvenation in Woody Plants,” Horticulture Reviews, Vol. 7, No. 109, 1985.
[13]	H. T. Hartmann, D. E. Kester, F. T. Davies Jr. and R. L. Geneve, “Plant Propagation: Principles and Practices,” 7th Edition, Prentice Hall, Upper Saddle River, 2001.
[14]	B. K. Maynard and N. Bassuk, “Etiolation as a Tool for Rooting Cuttings of Difficult-to-Root Woody Plants,” Combined Proceedings of International Plant Propagators Society, 1985, pp. 448-495.
[15]	N. Amissah and N. Bassuk, “Severe Cutback of Stock Plant Influences Rooting in Shoots of Quercus bicolor and Quercus macrocarp,” Combined Proceedings of International Plant Propagators Society, 2005, pp. 436-438.
[16]	N. Amissah and N. Bassuk, “Effect of Light and Cutting Age on Rooting in Quercus bicolor, Quercus robur and Quercus macrocarpa Cuttings,” Combined Proceedings of the International Plant Propagators Society, 2007, pp. 286-292.
[17]	N. Amissah and N. Bassuk, “Cutting Back Stock Plants Promote Adventitious Rooting of Stems of Quercus bicolor and Quercus macrocarp,” Journal of Environmental Horticulture, Vol. 27, No. 3, 2009, pp. 159-165.
[18]	E. F. Frolich, “Rooting Guatemalan Avocado Cuttings,” California Avocado Society Yearbook, 1951, pp. 136-138.
[19]	N. Bassuk and B. Maynard, “Stock Plant Etiolation,” Hortscience, Vol. 22 1987, pp. 749-750.
[20]	J. Griffin and N. Bassuk, “Preliminary Progress on the Asexual Propagation of Oaks,” Combined proceedings of International Plant Propagation Society, 1996, pp. 487-494.
[21]	N. Amissah and N. Bassuk, “Clonal Propagation of Quercusspp Using a Container Layering Technique,” Journal of Environmental Horticulture, Vol. 22, No. 2, 2004, pp. 80-84.
[22]	M. Dubois, K. A. Gilles, J. K. Hamilton, P. A. Rebers and F. Smith, “Colorimetric Methods for Determination of Sugars and Related Substances,” Journal of Analytical Chemistry, No. 28, 1956, pp. 350-356. doi:10.1021/ac60111a017
[23]	T. Swain and W. E. Hillis, “The Phenolic Constituents of Prunus domestica,” Journal of the Science of Food and Agriculture, Vol. 10, No. 1, 1959, pp. 63-68. doi:10.1002/jsfa.2740100110
[24]	A. Henrique, E. N. Campinhos, E. O. Ono and S. Z. Pinho, “Effect of Plant Growth Regulators in the Rooting of Pinus Cuttings,” Brazilian Archives of Biology and Technology, Vol. 49, No. 2, 2006, pp. 189-196. doi:10.1590/S1516-89132006000300002
[25]	J. B. Coll, G. N. Rodrigo, B. S. Garcia and R. S. Tames, “Acido Abscisicoytros Inhibidores,” In: J. B. Coll, G. N. Rodrigo, B. S. Garcia and R. S. Tames, Eds., Fisiologia Vegetal, Madrid, 2002, pp. 369-379.