Lecture 7 - Cassava, Sweet Potato, Yam Flashcards
Other names for cassava
tapioca, manioc, mandioca, yuca
cassava is the _____ source of calories after rice, sugar, and maize
4th
what is cassava mainly used for
food
cassava scientific name
manihot esculenta
cassava ploidy
2n=2x=36
what is the cassava plant
dicotyledonous short-lived perennial tuberous shrub grown as an annual or biennial
cassava plant height
1-5 m
Africa produces ___ of the world’s cassava
1/2
where was cassava domesticated
tropical brazil
adaptation of cassava to tropics
17-20C no freezes
1000 to 1500mm rainfall
tolerant of drought
how is cassava propagated
by stem cuttings with at least 3 nodes
how is cassava harvested
by hand or tractors where the roots are pulled out of the ground
how is cassava prepared
cooked boils, roasted, fried, or sundried. Must be detoxified by soaking/boiling
Biofortified yellow cassava
high pro-vitamin A
What institute produces yellow cassava
the international institute of tropical agriculture in Ibadan, Nigeria
Sweet potato scientific name
Ipomoea batatas Convolvulaceae
sweet potato ploidy
2n=6x=90 polyploid
does sweet potato self cross
no, it outcrosses
how to tell the difference between yam and sweet potato
yam = dry, starchy flesh that looks like bark
sweet potato = moist flesh with smooth skin
sweet potato is a ______ crop
root
difference between root crop and tuber crop
root crop = structure of typical roots with no nodes, internodes, or buds
tuber crop = modified stem that thickens for storage that includes nodes and internodes
how can sweet potato vary
vary in skin and flesh colour, tastes, and textures
sweet potato is the _____ most important food crop
7th
different uses of sweet potato
food, industrial (dye, starch), and animal feed
