Variability in carotenoid content among introduced yellow-fleshed cassava clones

Abstract: 
Cassava is important in semi-arid Kenya. However, the crop is low in micronutrients including beta-carotene. A total of 129 high beta-carotene cassava clones from the International Institute of Tropical Agriculture (IITA) were established in Kenya. Root samples were collected for carotenoid quantification by high performance liquid chromatography and spectrophotometry methods. Root yield of the clones ranged from 26.5-85 tons/ha. Mean root cyanogenic potential was 3.84. Carotenoid content ranged from 23-2232 µg/100g. The clones were ranked on basis of carotenoid content, root yield, cyanogenic potential and availability of planting material. The top ten clones in the rank were selected for incorporation in the carotenoid content trait in local varieties.
Dans la partie semi-aride du Kenya, la culture du manioc est d’une importance capitale. Cependant, la récolte est faible en micronutrients y compris le bêta-carotène. Un total de 129 clones de manioc avec haut bêta-carotène de l’institut international de l’agriculture tropicale (IITA) ont été établis au Kenya. Des échantillons de racine ont été rassemblés pour la quantification de carotenoïde par des méthodes de chromatographie liquide et de spectrophotométrie de haute performance. Le rendement de racine des clones s’est étalé de 26.5 à 85 tonnes/ha. Le potentiel cyanogénique moyen de racine était 3.84. Le contenu de carotenoïde s’est étendu de 23 à 2232 µg/100g. Les clones ont été rangés sur base de la teneur en carotenoïde, du rendement de racine, du potentiel cyanogénique et de la disponibilité de la matière végétale. Les dix principaux clones dans la classification ont été choisis pour l’incorporation du trait de contenu de carotenoïde dans des variétés locales.
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Date of publication: 
2010
Country: 
Region Focus: 
East Africa
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Collection: 
RUFORUM Conferences and Workshops
Licence conditions: 
Open Access
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Form: 
Printed resource
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Extent: 
139-142
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"The 2010 RUFORUM Biennial Conference was the second in the series. The main objective of the Biennial conferences is to provide a platform for agricultural research for development stakeholders in Africa and beyond to actively exchange findings and experiences, while at the same time learning lessons towards improving performance of the agricultural sector and ultimately people’s livelihoods. The biennial conference is RUFORUM’s most comprehensive meeting for the diversity of stakeholers in agriculture. It is especially dedicated to graduate students and their supervisors, grantees in RUFORUM member universities and alumni. It is a platform for peer review, quality control, mentorship, networking and shared learning. This record contains an extended abstract accepted under the theme of agronomy".