In the coastal region of Peru it grows best when planted from September to November. Sweet potato can be grown all year round if soils are well drained. Colder temperatures injure the roots.Īnnual rainfall of 750–1000 mm is ideal, with a minimum of 500 mm in the growing season (Ahn 1993). It is a semi-tropical plant that grows best between 20 and 30☌ and requires a minimum of 5 months of frost-free growing conditions with abundant sunshine (a photoperiod of 13–15 hours light is recommended) and warm nights. On the equator it is grown at altitudes from sea level to 3000 masl (Huaman 1987). Sweet potato grows at latitudes ranging from 40°N to 32°S. This guide describes the procedures for regeneration of seed collections of Ipomoea batatas and other wild relatives.Ī wide range of additional information about sweet potato can be found at the Sweetpotato Knowledge Portal.Ĭhoice of environment and planting season Several techniques have been developed to promote sweet potato flowering, including short photoperiod, grafting, trellises etc. Under normal sowing conditions, some cultivars do not flower. Within a sweet potato collection, a wide variation is generally observed in the flowering habits of different accessions. Wild sweet potato plant, Ipomoea purpurea (L.) Roth. Wild, related species and 2556 landrace accessions are conserved as seeds in cold chambers. The former are mainly conserved vegetatively in pots in greenhouses or screenhouses or under in vitro culture. The CIP genebank contains 6855 accessions of Ipomoea batatas (4616 landraces and 2239 improved cultivars and breeding materials) and 1171 accessions of 67other Ipomoea species. Sweet potato was probably domesticated more than 5000 years ago, in either South America or Central America, with recent evidence suggesting the latter (Rossel et al 2001). More than 133 million tonnes of sweet potato are produced globally per year, more than 95% in developing countries ( The most common names for this plant in Latin America are batata, camote, boniato, batata doce, apichu and kumara. Sweet potato is the world’s seventh most important food crop, after wheat, rice, maize, potato, barley and cassava. It has a vine system that expands rapidly and horizontally along the ground.Īlthough its growth habit is mainly prostrate, it varies from erect and semi-erect to spreading. Sweet potato ( Ipomoea batatas (L.) Lam.) is a herbaceous, perennial plant belonging to the Convolvulaceae family. 9 pp.īefore reading the regeneration details for this crop, read the general introduction that gives general guidelines to follow by clicking here.

CGIAR System-wide Genetic Resource Programme, Rome, Italy. The information on this page was extracted from:

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