01224naa a2200181 a 450000100080000000500110000800800410001910000160006024500940007626000090017052007330017965000180091265300180093065300270094865300120097570000170098777300380100416331622023-05-31       1990    bl uuuu     u00u1 u    #d1 aFAUQUET, C.  aAfrican Cassava Mosaic VirusbEtiology, epidemiology, and control.h[electronic resource]  c1990  aCassava (Manihot esculenta Crantz; Euphorbiaceae) is the only species in its genus that is cultivated as a food crop. In South America, where it originated, cassava was domesticated 2,000-4,000 years B.C., yet only recently has it become distributed worldwide. The Portugese began importing cassava into the Gulf of Guinea in Africa in the 16th century. In the l8th century, they introduced it to the east coast of Africa and the Indian Ocean islands of Madagascar, Reunion, an Zanzibar. Portuguese ships probably carried cassava to India and Sri Lanka after the mid-18th century. Cassava at first was little appreciated, but since the 19th century it has extended rapidly across Africa(Fig. 1) and is now grown in 39 countries.  aEpidemiologia  aAgente causal  aResistencia e selecoes  aVetores1 aFARGETTE, D.  tPlant diseasegv. 74, n. 6, 1990.