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Agro-Morphological Characterization of Sweet Potato Genotypes Grown in Different Ecological Zones in Kenya

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A main characteristic of sweet potato [Ipomoea batatas (L.) Lam.] is its high phenotypic and genotypic variability. There is no, or limited, information on suitability of agro-morphological characteristics for utilization in production and processing. Currrently, farmers are growing different sweet potato genotypes characterized with low yield. The aim of the study was to evaluate agro-morphological characteristics of 68 sweet potato genotypes in order to determine the best performing ones. The sweet potato genotypes were grown at the Kenya Agricultural and Livestock Research Organization and the Embu and Miyare Agriculture Training College. The locations were chosen because they are the main sweet potato producing areas with different climatic and production conditions. Six storage root and five aerial characters were used in the characterization. The genotypes differed in storage root stalk and root length; vine internode length and vine internode growth rate; petiole length and leaf size, and yield at both sites. Genotype Nyautenge was the best performing in terms of storage root yield. There was poor correlation among agro-morphological attributes. The study demonstrates the potential of some sweet potato genotypes such as Nyautenge for high productivity.


Journal of Horticulture and Plant Research (Volume 5)
L.A. Ochieng, "Agro-Morphological Characterization of Sweet Potato Genotypes Grown in Different Ecological Zones in Kenya", Journal of Horticulture and Plant Research, Vol. 5, pp. 1-12, 2019
Online since:
January 2019

[1] P.E. Norman et al., Agro-phenotypic characterization of sweet potato (Ipomoea batatas L.) genotypes using factor and cluster analyses, Agricultural Science Research Journal. 4 (2014) 30-38.

[2] J. Low et al., Sweet potato in sub-Saharan Africa, in: G. Loebenstein, G. Thottappilly (Eds.), The Sweet Potato, Springer, Berlin, 2009, pp.359-390.

[3] S.K. Jindal, D. Arora, T.R. Ghai, Variability studies for yield and its contributing traits in okra, Electronic Journal of Plant Breeding. 1 (2010) 1495-1499.

[4] A.B. Das, S.K. Naskar, Genetic variation of high yielding drought resistant sweet potato as evident by RAPD markers, Biological Diversity and Conservation. 1 (2008) 28-39.

[5] B. Vimala, B. Hariprakash, Variability of morphological characters and dry matter content in the hybrid progenies of sweetpotato (Ipomoea batatas L.) Lam.), Gene Conserve. 10 (2011) 65-86.

[6] D.R. La Bonte, D.H. Picha, H.A. Johnson, Carbohydrate-related changes in sweet potato storage roots during development, Journal of the American Society for Horticultural Science. 125 (2000) 200-204.

[7] A. Elameen et al., Phenotypic diversity of plant morphological and root descriptor traits within a sweet potato germplasm collection from Tanzania, Genetic Resources and Crop Evolution. 58 (2011) 397-407.


[8] A. Amin, J. Singla, Genetic variability, heritability and genetic advance studies in Carrot (Daucus carota var. sativa L.), Electronic Journal of Plant Breeding. 1 (2010) 1504-1508.

[9] H.W. Karuri et al., Evaluating diversity among Kenyan sweet potato genotypes using morphological and SSR markers, International Journal of Agriculture and Biology. 12 (2010) 33-38.

[10] V. Gichuru et al., A preliminary analysis of diversity among East African sweet potato landraces using morphological and simple sequence repeats (SSR) markers, Acta Horticulturae. 703 (2006) 159-164.


[11] S. Koussao et al., Diversity analysis of sweet potato (Ipomea batatas [L.] Lam.) germplasm from Burkina Faso using morphological and simple sequence repeat markers, African Journal of Biotechnology. 13 (2014) 729-742.


[12] H.W. Karuri et al., Morphological markers cannot reliably identify and classify sweet potato genotypes based on resistance to sweet potato virus disease and dry matter content, Journal of Applied Biosciences. 15 (2009) 820-828.


[13] S.C. Liu, J.T. Lin, D.J. Yang, Determination of cis- and trans- alpha- and beta-carotenoids in Taiwanese sweet potatoes [Ipomoea batatas (L.) Lam.] harvested at various times, Food Chemistry. 116 (2009) 605-610.


[14] G. Jha, Emerging research technology against climate change through selecting ideal genotypes from open pollinated seedling population of sweet potato [Ipomoea batatas (L.) Lam.], International Quarterly Journal of Environmental Science. 1 (2011) 179-185.

[15] E.A. Vaeasey et al., Genetic diversity in Brazilian sweetpotato (Ipomoea batatas (L.) Lam., Solanales, Convolvulaceae) landaraces assessed within microsatellite markers, Genetic and Molecular Biology. 31 (2008) 725-733.


[16] Z. Huaman, Systematic botany and morphology of the sweetpotato plant, International Potato Center, Lima, Peru, (1992).

[17] A. Laurie, S.M. Thiart, H.J. Vorster, Sustainable production of root and tuber crops (potato, sweet potato, indigenous potato, cassava) in southern Africa, South African Journal of Botany. 70 (2004) 60-66.


[18] I. Maquia et al., Molecular, morphological and agronomic characterization of the sweet potato (Ipomoea batatas L.) germplasm collection from Mozambique: Genotype selection for drought prone regions, South African Journal of Botany. 88 (2013) 142-151.


[19] M. Nedunchezhiyan, G. Byju, S.N. Dash, Effects of organic production of orange fleshed sweet potato (Ipomoea batatas L.) on root yield, quality and soil biological health, International Research Journal of Plant Science. 1 (2010) 136–143.

[20] M.J. Mbithe et al., Morphological characterisation of selected Ugandan sweet potato (Ipomoea batatas L.) varieties for food and feed, Phylogenetics & Evolutionary Biology. 4 (2016) 1-6.


[21] P. Rukundo et al., Storage root formation, dry matter synthesis, accumulation and genetics in sweetpotato, Australian Journal of Crop Science. 7 (2013) 2054-2061.

[22] F. Tairo, E. Mneney, A. Kullaya, Morphological and agronomical characterization of Sweet potato [Ipomoea batatas (L.) Lam.] germplasm collection from Tanzania, African Journal of Plant Science. 2 (2008) 77-85.

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