Variation in micronutrient content of orange-fleshed sweetpotato varieties grown in different environments

Field experiments were conducted at three locations in Zambia to characterize 15 sweetpotato varieties for tuber yield and micro-nutrient content. Location and variety had significant effect on tuber yield. Marketable yield ranged from 5.22 - 9.69 t/ha with variety Kakamega recording the least yield. AMMI analysis also indicated significant effects of genotype and location for tuber yield. These accounted for 53 and 11% of the differences. The variety x location effect was significant for iron, but not zinc. Varieties Zambezi, K566632, 199062.1 and Mayai had high levels of β-carotene.
Des expériences sur le terrain ont été conduites à trois endroits en Zambie pour caractériser 15 variétés de patate douce pour le rendement en tubercule. L’endroit et la variété ont eu un effet significatif sur le rendement en tubercule. Le rendement de Markatable s’est étendu de 5.22 à 9.69 t/ha avec la variété Kakamega enregistrant le moindre rendement. L’analyse d’AMMI a également indiqué des effets significatifs de génotype et d’endroit pour le rendement en tubercule. Ceux-ci ont montré 53 et 11% des différences. L’effet d’endroit de la variété X était significatif pour le fer, mais pas le zinc. Les variétés Zambezi, K566632, 199062.1 et Mayai ont eu les niveaux élevés du carotène-β.
Date of publication: 
Region Focus: 
Southern Africa
RUFORUM Conferences and Workshops
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Open Access
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Printed resource

About the RUFORUM 2010 Biennal Conference
"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 stakeholders 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 Food Science"