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<p>Sorghum is one of the minor cereals, rich in genetic diversity and important nutritional values. Unfortunately, this crop lacks a formal seed production system due to insufficient knowledge of available cultivars in Benin. The aim of this study is to characterise the local sorghum cultivars from the collection of the National Institute of Agricultural Research of Benin (INRAB). Field trials took place at the Research-Development site in Kouya (Boukoumbé) during the 2023 and 2024 growing seasons. A randomised complete block design with three replications was employed, comprising 120 plots, each measuring 16&#xa0;m². Eleven morphological and agronomic traits, selected based on UPOV guidelines, were assessed. Descriptive analysis showed moderate genetic variation among the sorghum accessions for the evaluated morpho-agronomic traits. The average grain yield was 2946.5&#xa0;kg/ha, ranging from 2000 to 5000&#xa0;kg/ha. Grain colour varied considerably, with orange-red being the most common (25%). Cluster analysis grouped the accessions into five genotypic categories, which align with three primary profiles: early and high-yield accessions (clusters 2 and 5), late accessions with strong yield potential (cluster 3), and vigorous but lower-performing accessions (clusters 1 and 4). Notably, group 2 includes accessions with very dense panicles, highlighting their important agronomic traits. Among the top 10 accessions based on grain yield, the highest three are S_19077 (5 t/ha), S_19095 (4.5 t/ha), and S_19093 (4.1 t/ha). Based on these results, the most successful sorghum cultivars will be selected and will be used in a genetic improvement programme for this cereal.</p>

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Agromorphological Diversity of Sorghum Accessions Collected in North-West Benin

  • 期刊论文

  • 发表日期：

    2026年4月30日

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  • Hafiz A. Salami,
  • Marius Guedou ,
  • Guirguissou Mamoudou Alidou,
  • Donatien Ahissou,
  • Yannick S. C. Gogan,
  • Pascal Koi,
  • Barnabé Kindohoun,
  • Maurice Hodonou,
  • Haziz Sina

摘要

Sorghum is one of the minor cereals, rich in genetic diversity and important nutritional values. Unfortunately, this crop lacks a formal seed production system due to insufficient knowledge of available cultivars in Benin. The aim of this study is to characterise the local sorghum cultivars from the collection of the National Institute of Agricultural Research of Benin (INRAB). Field trials took place at the Research-Development site in Kouya (Boukoumbé) during the 2023 and 2024 growing seasons. A randomised complete block design with three replications was employed, comprising 120 plots, each measuring 16 m². Eleven morphological and agronomic traits, selected based on UPOV guidelines, were assessed. Descriptive analysis showed moderate genetic variation among the sorghum accessions for the evaluated morpho-agronomic traits. The average grain yield was 2946.5 kg/ha, ranging from 2000 to 5000 kg/ha. Grain colour varied considerably, with orange-red being the most common (25%). Cluster analysis grouped the accessions into five genotypic categories, which align with three primary profiles: early and high-yield accessions (clusters 2 and 5), late accessions with strong yield potential (cluster 3), and vigorous but lower-performing accessions (clusters 1 and 4). Notably, group 2 includes accessions with very dense panicles, highlighting their important agronomic traits. Among the top 10 accessions based on grain yield, the highest three are S_19077 (5 t/ha), S_19095 (4.5 t/ha), and S_19093 (4.1 t/ha). Based on these results, the most successful sorghum cultivars will be selected and will be used in a genetic improvement programme for this cereal.