Screening of yam genotypes based on crumbliness of boiled yam

Honfozo Laurenda, Hotegni Francis, Adinsi Laurent, Pede Pénélope, Arufe Santiago, Akissoé Noël. 2025. Screening of yam genotypes based on crumbliness of boiled yam. Cotonou : RTB Breeding-CIRAD, 16 p.

https://doi.org/10.18167/agritrop/00860

Document technique et de recherche

Prévisualisation

Version publiée - Anglais
Sous licence

.
RTB Breeding Quality_Screening of yam genotypes by crumbliness_UAC-FSA_2025.pdf
Télécharger (748kB) | Prévisualisation

Résumé : The key quality traits of boiled yam mainly include white color, sweet taste and the crumbly texture. The latter, as a key trait for boiled yam acceptance, is highly variety dependent. The study aimed at classifying yam genotypes regarding their crumbliness for boiled yam. Ten (10) landraces and 23 hybrids were used, among them nine were harvested in two zones (Bassila, Dassa, Djougou Massi). Consequently, 42 samples were considered for this study. Textural analysis as well as dry matter content analysis were carried out. In addition, some of the genotypes (nine) were subjected to quantitative descriptive analysis (QDA). The textural parameters, the dry matter content of yam and the sensory crumbliness of boiled yam enabled discriminating the genotypes (p-value <0.0001). Using predicted crumbliness based on textural parameter LD Peak/APeak and the sensory thresholds of boiled yam, yam genotypes were classified in good (9 genotypes), medium (13 genotypes) and poor (20 genotypes) quality clusters. This classification was used to identify yam genotypes which are promising (good and medium). However, further investigations have to be done for a better understanding of the crumbliness of boiled yam which is not yet well mastered since only 36% of sensory crumbliness was explained by the predicted crumbliness.

Mots-clés libres : Yam genotypes, Predicted crumbliness, Selection, Promising genotypes, Breeding

Agences de financement hors UE : Centro Internacional de la Papa, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Bill and Melinda Gates Foundation

Projets sur financement : (FRA) RTB Breeding

Auteurs et affiliations