sweet potato family: convolvulaceae. genus: ipomoea (approx. 50 genera & 400 species) botanical...
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Sweet potatoFamily: Convolvulaceae.Genus: Ipomoea (approx. 50 genera & 400 species)Botanical name: I. batatas
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General botany Perennial crop, but treated as annual when cultivated.The plant has trailing and twining stems and containing latex. Tuber is rich in carbohydrate, vit. A and C.
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Variation among cultivars
Cultivars differ in: 1.Colour of root skin 2.Colour of the flesh3.Shape of the roots4.Shapes of the leaf5.Depth of rooting6.Time of maturity7.Resistance to diseases8.Texture of cooking roots
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What make skin and flesh colour different
• The phytochemicalsPhenolic compoundscarotenoidsanthocyninstocopherols
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The history
The oldest remains was found in Peru: 8,000-10,00 yr old.
This indicates primary center of origin is in central to south America
The second center of origin is thought to be in Papua New Guinea, based on genetic distinctiveness
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How sweet potatoes reach Asia
The Spanish and the Portuguese
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The sweet facts
• As an emergency food crop.• 80% (in term of acreage) is grown in Asia and
15% in Africa.• Yield per ha, China and Japan produce 20-25
t/ha. Only Egypt produce up to 30 t/ha.• Asians are the main consumer of sweet
potatoes
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World production
World ranking1.China (85% of world production)
2.Nigeria3.Uganda
4.Indonesia5.Vietnam
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Environment suitable for cultivation
Best in sandy loam soilOptimum temp approx 24oC 75-100 cm of rainfall per annum (esp. during
planting)
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Sweet potato varieties
Few varieties developed by MARDI are found or planted locally;Gendut for fries or chipsJaloMas and Telong for flour use in food product
VitAto with high beta carotene content
However, hundreds of accessions are reported and found locally in the country.
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Uses
Staple food in some countries e.g. Papua New Guinea
Confectionaryprocessed as staple – chips and canned.
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Health benefits of sweet potato
High-Fiber BenefitsSweet potatoes are a fiber-rich food that promotes healthy digestion.
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Health benefits of sweet potato …cont
Antioxidant Benefits
As an antioxidant-rich food, sweet potatoes hinder the destructive action of free radicals.
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Health benefits of sweet potato …cont
Blood Glucose Control
Sweet potatoes are an ideal food for people with diabetes, to keep blood glucose levels stable and prevent health complications.
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Uses …. cont
Industrial use flour, sauce, pasta, glucose, syrup,
alcohol, lactic acid, pectin.
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Any questions
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Tips Penanaman Ubi Keledek
http://animhosnan.blogspot.com/2010/06/keledek.html
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Thank you