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<p>Sweet potato cultivation is expanding in Côte d’Ivoire, but increasingly erratic rainfall is shortening the growing season and depressing yields. Deploying early-maturing genotypes could stabilise production and improve food security in rain-fed systems. This study therefore screened 33 sweet-potato (<i>Ipomoea batatas</i>) genotypes to identify high-yielding, short-cycle cultivars suited to the country’s central region. The genotypes were evaluated at Bouaké over two consecutive years in an alpha-lattice split-plot design with four harvest dates (60, 90, 120, and 150 days after planting). Combined ANOVA, principal-component analysis and hierarchical clustering showed highly significant harvest date and genotype effects (<i>p</i> &lt; 0.001) for all agronomic traits. Six genotypes AFFOU1, CIP-196062-1, TIB-440,060, CNRA PD19/00036, INCONNU8 and J21 consistently produced marketable yields ≥ 20 t ha<sup>−</sup>¹ within 90–120 days, with precocity indices &gt; 0.60 and stable performance across contrasting seasons. Six short-cycle sweet-potato genotypes combining earliness and high productivity were identified. Their adoption could mitigate the impact of shortened rainy seasons, secure farmer incomes and strengthen food security in regions facing climatic variability.</p>

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Identification of early productive sweet potato genotypes for enhancing food security in Côte d’Ivoire

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月16日

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  • Akoua Reine-Fatou Essy,
  • Konan Evrard Brice Dibi,
  • Denis Cornet,
  • Ky Juliette Dedi,
  • Kinampinan Adelphe Hala,
  • Adjo Christiane Koffi,
  • Brou Julien Kouakou

摘要

Sweet potato cultivation is expanding in Côte d’Ivoire, but increasingly erratic rainfall is shortening the growing season and depressing yields. Deploying early-maturing genotypes could stabilise production and improve food security in rain-fed systems. This study therefore screened 33 sweet-potato (Ipomoea batatas) genotypes to identify high-yielding, short-cycle cultivars suited to the country’s central region. The genotypes were evaluated at Bouaké over two consecutive years in an alpha-lattice split-plot design with four harvest dates (60, 90, 120, and 150 days after planting). Combined ANOVA, principal-component analysis and hierarchical clustering showed highly significant harvest date and genotype effects (p < 0.001) for all agronomic traits. Six genotypes AFFOU1, CIP-196062-1, TIB-440,060, CNRA PD19/00036, INCONNU8 and J21 consistently produced marketable yields ≥ 20 t ha−¹ within 90–120 days, with precocity indices > 0.60 and stable performance across contrasting seasons. Six short-cycle sweet-potato genotypes combining earliness and high productivity were identified. Their adoption could mitigate the impact of shortened rainy seasons, secure farmer incomes and strengthen food security in regions facing climatic variability.