Orange Fleshed Sweetpotato: A contributor to health: Breeding healthy sweetpotatoes to alleviate vitamin A deficiency

Description

Vitamin A deficiency is a serious public health problem in Zambia and the existing means for addressing the problem are inadequate. The problem is manifest especially in young children and lactating mothers. Sweetpotato is a potential crop for alleviating vitamin A deficiency as some of the genotypes contain high levels of β carotene recognised by the orange flesh. However most of the genotypes grown in Zambia are white fleshed hence low in β carotene. The research presented in this book was conducted as a contribution to the alleviation of vitamin A deficiency in Zambia by bio fortification of sweetpotatoes. The goal of this research was to improve the quantity of β carotene of the high dry mass local sweetpotato cultivars through hybridisation with the high β carotene content introduced genotypes. Two high β carotene parents exhibited positive high general combining ability effects indicating that additive gene effects were predominant in the inheritance of β carotene. Reciprocal mean squares were significant (p=0.01) for β carotene content. The estimate of narrow sense heritability of β carotene (20.9%) was much lower. These results suggest that genetic gains will be slow for
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Manufacturer: LAP LAMBERT Academic Publishing;
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Label: LAP LAMBERT Academic Publishing;
Amazon Sale Rank: 9883275;


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