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Prospects for Enhancing Value of Crops through Public-Sector Research: Lessons from Experiences with Roots and Tubers

As international agricultural research centers places greater emphasis on poverty reduction, a debate is underway whether higher priority should be given to research to “add value” to agricultural commodities through post-harvest innovations at the expense of the traditional emphasis given to agricultural production. In particular, post-harvest research is seen as …

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Transport Receipt and Propagation of In Vitro Sweetpotato Plantlets

Tissue culture materials consist of small aseptic plantlets growing on a synthetic nutrient medium. The aseptic nature of this material makes it an ideal method for international exchange of germplasm as it minimizes the risk of transmitting fungal and bacterial diseases. This document contains information for the recipient of in …

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Genomic Structure and the Gene Flow in Sweetpotato and and Related Species

This presentation consists of three points. The first point is that the cytogenetical study provides evidence of autoploidy of sweetpotato and the wild polyploids in the Ipomoea trifida complex. The second point concerns the feasibility of the gene flow in a circulationg system among sweet potato and its wild relatives. …

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Sweetpotato Postharvest Systems in Uganda: Strategies, Constraints and Potentials

Sweetpotato is often either a major food staple or complementary staple in Ugandan food systems. It also serves as a famine reserve crop and increasingly as an important source of case income. Nevertheless, sweetpotato has only recently begun to attract the attention of researchers and policy markers with much of …

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Promotion of Orange-fleshed Sweetpotato to Enhance Dietary Vitamin A Intake: Lessons and Strategies in Eastern and Southern Africa

Vitamin A deficiency is a serious component of a serious and growing problem of malnutrition in sub-Saharan Africa, particularly among children. The International Potato Centre (CIP) is working together with partner organizations in agriculture, nutrition, and health to fight vitamin A deficiency through the promotion of orange- fleshed sweetpotato varieties …

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Potential of Sweetpotato in Reducing Vitamin A Deficiency in Africa

Orange-fleshed roots contained higher total carotenoid and b-carotene content than white- and cream- fleshed lines, and all trans-b-carotene predominated for more than 80%. Carotenoids from orange-fleshed sweetpotato are highly vitamin A active and their consumption in Africa where vitamin A deficiency is prevalent should be encouraged. Twelve weeks after planting, the …

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Overview of Breeding and Evaluation of Orange-fleshed Sweetpotato In South Africa

The sweetpotato research programme at the Agricultural Research Council (ARC) Roodeplaat Vegetable and Ornamental Plant Institute (ARC-Roodeplaat) has been operational since the 1950s. The program has contributed to the sweetpotato industry in South Africa in two ways: through breeding of almost all the commercially grown sweetpotato cultivars, and by a scheme …

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