On-farm participatory assessment of elite yam clones for yield and food quality in Nigeria. Gender equitable positioning, promotion and performance, WP5

Amele Asrat, Edemodu Alex, Pelemo Olugboyega, Olusola Theresa, Kabiru Ganiyu, Dada Oluwakayode Johnson, Obidiegwu Jude, Agre Paterne Angelot, Adebola Patrick, Bouniol Alexandre. 2023. On-farm participatory assessment of elite yam clones for yield and food quality in Nigeria. Gender equitable positioning, promotion and performance, WP5. Abuja : RTBfoods Project-CIRAD, 14 p.

https://doi.org/10.18167/agritrop/00750

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Résumé : The overall agronomic and food quality assessment revealed that the elite yam clones advanced to on-farm testing namely TDa1100374, TDr1401220 and TDr1400158 are suitable for official release. The water yam candidate TDa1100374, produced higher yields and performed better than the checks and showed stability across diverse agro ecologies in Nigeria. It also showed highly resistant reaction to yam diseases with an appealing creamy white tuber flesh colour, with slow rate of oxidation. The TDa1100374 showed low peel loss during processing, higher tuber dry matter content and exhibited an excellent boiled and pounding qualities. On the other hand, the white yam candidate, TDr1401220 showed remarkable yield potential and adaptation across locations while TDr1400158 expressed higher yield but showed a specific adaptation to northern Guinea savannah and the rain forest savannah transition zones. Combined with their high yields and high resistance to yam diseases (virus and anthracnose), both candidates reported excellent industrial and nutritional attributes including high flour yields, dry matter and low peel loss. Their tubers exhibited appealing qualities including a creamy white tuber flesh with slow rate of oxidation. Among the 461 farmers participated in the evaluation the candidate yam varieties in comparison to the standard and local check cultivars for the agronomic and food quality attributes, majority preferred TDr1400158 for excellent pounding qualities while TDr1401220 for good boiled yam quality. Incidentally, more of the consumers/farmers preferred the boiled (53%) and pounded yam (62%) from their local varieties more that the products from TDa1100374. However reverse trend was observed for the tuber yield (63%), tuber appearance (61%) and tuber shape (60%) where they preferred the test genotype over their local varieties.

Mots-clés libres : White Yam, Water Yam, Boiled Yam quality, Pounded Yam quality, PVS

Agences de financement hors UE : Bill and Melinda Gates Foundation, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Centro Internacional de Agricultura Tropical, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, James Hutton Institute

Projets sur financement : (FRA) Breeding RTB Products for End User Preferences

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