Pattern of Dry Matter Distribution, Yield and Nutritional Composition of some Orange-Fleshed Sweet Potato Accessions in Jos-Plateau, Nigeria

Akinbola, O.J, Namo, O.A.T. and Utoblo, G.O.

Cytogenetics and Plant Breeding Unit, Department of Plant Science and Technology, University of Jos, P.M.B. 2084, Jos, Plateau State, Nigeria

Accepted 16 November, 2017

Citation: Akinbola, OJ, Namo, O.A.T. and Utoblo, G.O. (2017). Pattern of Dry Matter Distribution, Yield and Nutritional Composition of some Orange-Fleshed Sweet Potato Accessions in Jos-Plateau, Nigeria. International Journal of Food and Nutrition Sciences, 2(3): 035-042.

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Copyright: © 2017 Namo et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Abstract

The orange-fleshed sweet potato contains β-carotene, a precursor of Vitamin A. There is, therefore, the need to promote the cultivation and consumption of the OFSP. Twelve accessions of the orange-fleshed sweet potato, namely, F2M5/3, Ng – Jay, MD, F1M1/4, ELINDA, SOUL, AI2IB, TIS. 87/0087/08, KWARA/00, F1M4/11, SOLO – 1/100 and SOLO – 1/144, were evaluated for dry matter distribution, yield potentials and nutritional composition in the Jos-Plateau environment, Nigeria in 2016, using the randomized complete block design with four replications. Proximate analysis was carried out to determine the nutrient composition of the accessions using standard procedures. Results showed that total dry matter increased with time up to 90 DAP and thereafter decreased in all but accessions F2M5/3, SOUL and SOLO-1/100. The proportion of dry matter in the leaves and stems was generally higher than in the tubers at the early stages of growth in all the accessions. At the end of the growing season, however, the dry matter partitioned to the tubers was generally higher than in the leaves and the stems. Total tuber yield was highest in the accession Ng-Jay (8.2 t/ha) and lowest in the accession ELINDA (2.0 t/ha). Except for calcium, all other nutrient elements varied with accession. The highest fat and β-carotene contents were observed in the accession SOLO-1/144. The OFSP accessions used in this study showed promising potentials for high yields and nutritional composition in the Jos-Plateau environment. They are, therefore, recommended for further screening and selection.

Keywords: Orange-fleshed sweet potato (OFSP), β-carotene, yield, dry matter, tuber.