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Yellow cassava
Yellow cassava is a new, yellow-fleshed breed of one of the most popular root crops in the tropics. Regular cassava is a staple crop in tropical countries which 300 million people rely upon for at least 10% of their daily caloric intake, in 15 African countries〔Bokanga, M. (2000). Cassava: Post-harvest operations. Information Network on Post-Harvest Operations. 1-26. (FAO Cassava post-harvest pdf )〕 “In the Democratic Republic of the Congo, cassava is estimated to provide more than 1000 kcal/day to over 40 million people”.〔
Three yellow root cassava varieties, UMUCASS 36, UMUCASS 37, and UMUCASS 38, are being grown (under the Harvest Plus Project)〔Egesi, Chiedozie. (2011). New improved cassava varieties released in Nigeria. Integrated Breeding Platform. (integratedbreeding.net Improved cassava varieties in Nigeria )〕〔Nascimento, P., Fernandes, N., Mauro, M., & Kimura, M. (2007). Beta-carotene stability during drying and storage of cassava and sweet potato. II International Symposium on Human Health Effects of Fruits and Vegetables:
FAVHEALTH 2007 841, 363-366. (Beta-carotene in drying and storage of cassava )〕 in Nigeria for their high concentrations of β-carotene. β-carotene is a precursor to Vitamin A. Vitamin A deficiency is a major issue, especially in Africa. Nigeria in particular sees a prevalence of Vitamin A deficiency in nearly one third of children under five years old.〔WRENmedia. (2012) Green light for yellow cassava. New Agriculturalist. (New Agriculturalist - Green light for yellow cassava )〕 Since cassava is a major food staple, yellow cassava shows great potential to alleviate Vitamin A deficiency in Africa.
==Description==
Yellow cassava is similar to ordinary varieties of cassava (Manihot esculentum, see cassava) but it has a yellow flesh inside the root, which is generally white in ordinary varieties.〔 Cassava is a woody shrub that grows large roots, which are harvested for consumption. The roots consist of three parts: the central pith, the peel, and a vascular bundle within the central pith.〔 The new yellow varieties have high yields and are resistant to many pests and diseases. Like ordinary cassava, it does not need nutrient rich soils or extensive land preparation and does not suffer during droughts.〔Consortium. (2012). Nigeria releases Vitamin A cassava to improve public health for millions. Stories of Change, CGIAR. (CGIAR Cassava and Vitamin A )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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