Orange-fleshed: lmpilo and W-119 (dry); Beauregard (moist) Purple skin (fresh market): Blesbok, Bosbok (moist) Cream skin: Ndou, Monate (dry). Potato and sweetpotato in Africa: transforming the value chains for food and nutrition security. Hundayehu, M., Du Toit, E., Laurie, S., Steyn, M., Greyling, R., Myeza, N. 2014. Effect of long-term invitro sub-culturing on quality degeneration of sweet potato varieties: Morpho-anatomic assessment and simple sequence repeats (SSR) analysis. FLOURY (UTD – Up to Date, Caren, Darius and Avalanche) MWANGA, E.E. Multi-environment performance of new orange-fleshed sweetpotato varieties in South Africa. All clods should be smashed by using a rake or hand tined cultivator until a deep fine bed is obtained. Consumer acceptability of four products made from beta-carotene-rich sweet potato. Sweet potato is grown by many resource-poor farmers in virtually all provinces of South Africa. •ARC- Roodeplaat breeding programme is breeding cultivars with: Good yield, good taste Wide adaptability Drought tolerance. Orange-fleshed types are rich in beta-carotene, a pro-vitamin A carotenoid that is converted to vitamin A by the human body. The ARC-VOP has an excellent history in sweet potato breeding since 1952. 12(25): 3947-3951. Euphytica 204(2):433-442. trial for two years. processing or orange-fleshed sweet potato. Sweet Potatoes have a rich history in Africa and around the world. New varieties and lines have been released for the various markets in South Africa, PRODUCTION MANUAL - Guide to Sweet potato production. Sweet potato is an important food and poverty relief crop that can be used to combat widespread Vitamin A deficiency which compromises the immune system and eye health. Potato cultivars available in South Africa can be divided into three groups according to the length of their growing periods. SouthAfrican Journal of Botany 85: 10-16. The crop plays an important role in food systems of Southern Africa countries, including South Africa. South Africa Online (Pty) Ltd. SouthAfrica.co.za. The second aim was to establish the sensory characteristics of OFSP by developing sensory profiles for four OFSP cultivars and one Sweet potatoes are rich sources of energy but also contributes vitamin C and minerals such as magnesium, copper, iron and zinc to the human diet. Naidoo S.I.M, Laurie, S.M., Odeny, D.A., Vorster, B.J., Mphela, W.M., Greyling, M.M. Orange-fleshed cultivars are rich in beta-carotene and thus used in food-based programs to address vitamin A deficiency. Laurie, S.M., van Jaarsveld, P.J., Faber, M., Philpott, M.F. Orange-fleshed cultivars were superior to the cream-fleshed cultivar Blesbok in calcium and magnesium content. The most common potato varieties grown in South Africa are Mondial and Sifra (2017). Sweet potato vines can be planted in two different ways – to either multiply the sweet potato vines or to produce a higher yield of the crop. Orange-fleshed sweet potato is a very useful food for school feeding. Ipomea batatas. Scientia Horticulturae 142: 180-184. Keep a look-out for pests and control them with the correct chemicals or organic remedies. Blesbok, Bosbok and Ribbok. frozen products, crisps, baby foods, etc. Research on sweet potato include the following areas: sweet potato breeding and cultivar trials, MWANGA, E.E. The sweet potato weevil is the most common pest you are likely to find. Greenhouse and field evaluation of selected sweetpotato (Ipomoea batatas (L.) LAM) accessions for drought tolerance in South Africa. : Beauregard, Hernandez, Beerwah Gold, NC-3, LO-323, Centennial, Darby and Jewel. There are many different potato cultivars/varieties available in South Africa. & Pillay M. 2013. Yes, there’s more than one type of sweet potato at your local grocery store. Loosen the soil thoroughly by either ploughing or using a fork, hand hoe or spade. You may be trying to access this site from a secured browser on the server. They're even more moist than jewels or Beauregards, which makes them great for baking projects; they're our ideal sweet potato for pie, mashed sweet potato casserole, and nice and simple mashed sweet potatoes. The skin can for example be white, yellow, pink, orange, purple or reddish brown. Development of NIRS models for rapid quantification of protein content in sweetpotato [Ipomoea batatas (L.) LAM]. GRÜNEBERG, W.J., D. MA, R.O.M. Sweet Potato. sweet potato population. Laurie S.M., Calitz F.J., Adebola P.O., Lezar, A. Biofortification of sweet potato for food and nutrition security in South Africa. The ARC also has Magwaza LS, Naidoo SIM, Laurie SM, Laing MD, Shimelis H. 2016. LAURIE, S.M., BOOYSE, M., LABUSCHAGNE, M.T., GREYLING. Laurie, S.M., Faber, M., van Jaarsveld, PJ, Laurie, R.N., du Plooy, C.P. The varieties/cultivars differ in shape, colour, skin texture, size, yield, and days to maturity. LAURIE S.M. Sweet potato breeding. Sweet potato belongs to the morning glory family and produces edible storage roots. Orders cannot be separated. & VAN HEERDEN, S.M. Although the leaves and shoots are also edible, the starchy tuberous roots are by far the most important product. Potato seeds are one of the most important and obvious inputs in this business. increased production under unfavourable biotic and abiotic conditions. The flesh colour varies from white and yellow to light orange or dark orange. (2014). The crop needs good drainage and is sensitive to waterlogging, salinity and alkalinity. South African Journal of Plant & Soil 32(3):147-155. stringent selection (±80-100), lines progress to the preliminary yield In the group for early cultivars (less than … The breeding efforts also aim at traits of importance to the commercial industry, such as high quality, as well as high yielding sweet potato varieties for export, local markets and processing, e.g. Advances in sweetpotato breeding from 1993 to 2012 (pg 1-77). There is therefore a need to integrate modern Lam.) Crop Science 55(4): 1585-1595. processing or orange-fleshed sweet potato, http://dx.doi.org/10.1080/09064710.2016.1220613. Laurie S.M., Faber M., Adebola P., Belete A., 2015. Commonly three distinct types of sweet potato available for commercial pro-duction include: 1) Orange/copper skin with orange fl esh, e.g. Journal of Food Composition and Analysis 27:151-9. Nyongesa, M., Quinn, S., Parker, M., & Low, J. - Andrè van den Berg, Whelma Mphela, Lesego Selokela, Sidwell Tjale, Musa Mtileni, Piet Ribisi, Lazarus Masuku, and Obed Moikangwe, GRÜNEBERG, W.J., D. MA, R.O.M. Pieces of stem of 20-30 cm long should be taken for cuttings. •The internal colors of most South African cultivars varies from white to yellow. Potatoes South Africa is a Non-profit company under the Companies Act 71, 2008 (Act 71 of 2008). Trans-β-carotene, selected mineral content and potential nutritional contribution of 12 sweetpotato varieties. the commercial industry on their premises. African Crop Science Journal 24(1): 63-71. Characterization and evaluation of South African sweet potato (Ipomoea batatas (L.) LAM) land races. in small pots. Stony or clay soil is not good, as it does not allow the formation (development) of good storage roots. •Sweet potato cultivars can be found in variety of colours. as influenced by irrigation and fertilizer application treatments. These are planted in multiplication blocks and then cuttings from there are used to produce sweet potato. American Journal of Experimental Agriculture 5(5): 450-458. Indigenous floriculture crops | Indigenous/traditional African vegetables | Potatoes | Genebanks | Biotechnology | Agro-processing | Commercial Vegetables___________________________________________________________________________________________________________________________________________________________________________, Team Leader: Dr. Sunette Laurie, Breeding - Andrè van den Berg, Whelma Mphela, Lesego Selokela, Sidwell Tjale, Musa Mtileni, Piet Ribisi, Lazarus Masuku, and Obed Moikangwe, Glasshouse genebank maintenance - Vusi Nkosi and Lesego Selokela, In vitro gene bank maintenance - Nokuthula Myeza, Disease-indexing multiplication scheme - Lesego Selokela and Vusi Nkosi, Virus diagnostics, molecular markers, genomics and transgenic research - Dr Inge Gazendam. Viruses are the most limiting factor in production of sweet potato causing considerable loss of yield and also influence the quality. Remove stones and break hard layers to ensure good root penetration. At Roodeplaat the ARC maintains the only disease-indexing collection (genebank) of sweet potato in South Africa. Chapter 1 You can recognize a garnet sweet potato thanks to its dark orange-red skin, which conceals bright orange flesh. The storage roots can be found in different colours. Most of these cultivars are cream-fleshed and three of these are the main commercialized cultivars currently planted in South Africa, namely, After & Labuschagne, M.T., 2015. (2013). Potatoes South Africa has classified spuds into three categories, each suitable for a specific cooking method. security, nutrition and income generation. Optimum pH (H20) is 5.6 - 6.5. In: Nyongesa, M., Quinn, S., Parker, M., & Low, J. Crop Science 55(4): 1585-1595. In most of sub-Saharan Africa, people only knew of sweet potato varieties that were white inside — the types that came to Africa from South America in the 1600s. However, storage is a difficult task as sweet potatoes are very vulnerable to spoilage. LWT – Food Science and Technology 72: 63-70 (May) ISI 2.71. Genotype x environment interaction and yield stability estimate of some sweet potato [Ipomoea batatas (L.)Lam] breeding lines in South Africa. Food Research International 76: 962-970. Orange Fleshed Sweet Potato - Nutritious and Easy-to-Grow Crop Sweet potato is an excellent source of energy, while containing substantial quantities of vitamin C and also contribute B vitamins and minerals such as magnesium, zinc and iron to the human diet. attractive purple skin and orange flesh. Adebola P.O., Shegro A., Laurie S.M., Zulu L.N. Cultivar development of sweet potato has, up to now, been largely Lines are available with Sweet potatoes are sensitive to low temperatures, especially frost. Current research efforts give attention to tolerance to Fusarium wilt, stem and leaf blight and nematodes. In most of sub-Saharan Africa, people only knew of sweet potato varieties that were white inside — the types that came to Africa from South America in the 1600s. (2013). Do not use vines from volunteer sweet potatoes because these might transport pests and diseases. Journal of Agricultural Science 7(1): 201-215 . polycrosses are used to incorporate selective characteristics in to the To date, 25 cultivars have been released from the breeding program. African Journal of Biotechnology Vol. The US$4 million project that began in April 2014 and ended last month (March 2017) was funded by the Bill and Melinda Gates Foundation and implemented in Burkina Faso, Ghana and Nigeria. 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