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Blog Archives

Key access and utilization descriptors for sweet potato genetic resources

This minimum list consists of an initial set of characterization and evaluation descriptors for sweet potato utilization. This strategic set of descriptors, together with passport data, will become the basis for the global accession level information portal being developed by Bioversity International with the financial support of the Global Crop …

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Descriptors for sweetpotato

This list consists of an initial set of characterization and evaluation descriptors for sweet potato utilization. This strategic set of descriptors, together with passport data, will become the basis for the global accession level information portal being developed by Bioversity International with the financial support of the Global Crop Diversity …

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Guidelines for regeneration of sweetpotato from seed

Within a sweet potato collection, a wide variation is generally observed in the flowering habits of different accessions. Under normal sowing conditions, some cultivars do not flower. Several techniques have been developed to promote sweet potato flowering, including short photoperiod, grafting, trellises etc. This guide describes the procedures for regeneration …

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Transgenic sweet potato plants carrying the delta-endotoxin gene from Bacillus thuringiensis var. tenebrionis.

Some clones of sweet potato (Ipomoea batatas L.), transgenic plants of the cultivar ‘Jewel’, carrying the cryIIIA gene from Bacillus thuringiensis subsp. tenebrionis (B.t.t), were obtained. Molecular tests and biological activity experiments against sweet potato weevil (Cylas formicarius), were performed. The cryIIIA delta-endotoxin gene was cloned under the regulation of …

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Sweet Potato (Ipomoea batatas L.) Regeneration and Transformation Technology to Provide Weevil (Cylas formicarius) Resistance – Field Trial Results

Although sweet potato is one of the most important plants around the world (FAO, 1989),biotechnological work on it has lagged behind. In the last years few groups have reported theirexperiences in sweet potato molecular biology manipulation to increase its nutritional quality(L6pez et al., 1996) and to give it pest resistance …

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On-farm evaluation of the impact of drying and storage on the carotenoid content of orange-fleshed sweet potato (Ipomea batata Lam.)

Drying of orange‐fleshed sweet potato was evaluated under African rural conditions. Three locally built dryers (open‐air sun, tunnel and shade) were tested using Resisto and MGCL01 varieties in Mozambique. Total carotenoid losses were low in all dryers being 9.2% on average. After drying, sweet potato chips were stored in a …

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Effect of drying and storage on the degradation of total carotenoids in orange-fleshed sweetpotato cultivars

Orange‐fleshed sweetpotato (OFSP) can be used to tackle vitamin A deficiency, a major public health problem in most developing countries. In East Africa, common ways of using sweetpotato include drying and subsequent storage. The aim of the study was to investigate the impact of drying and storage on the total …

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Plant breeding and farmer participation

This book provides a comprehensive description and assessment of the use of participatory plant breeding in developing countries. It is aimed at plant breeders, social scientists, students and practitioners interested in learning more about its use with the hope that they all will find a common ground to discuss ways …

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Plant Breeding and Farmer Participation

This book provides a comprehensive description and assessment of the use of participatory plant breeding in developing countries. It is aimed at plant breeders, social scientists, students and practitioners interested in learning more about its use with the hope that they all will find a common ground to discuss ways …

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