Environmental cues control cassava flowering

New knowledge about the flowering mechanism of a popular cassava cultivar, gleaned by a RIKEN-led study, could help efforts to produce improved breeds of the crop.

Researchers help inform cassava breeding worldwide

Scientists in Cornell University's NextGen Cassava project have uncovered new details regarding cassava's genetic architecture that may help breeders more easily pinpoint traits for one of Africa's most vital crops.

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Cassava

Cassava (Manihot esculenta), also called yuca or manioc, a woody shrub of the Euphorbiaceae (spurge family) native to South America, is extensively cultivated as an annual crop in tropical and subtropical regions for its edible starchy tuberous root, a major source of carbohydrates. It differs from the similarly-spelled yucca, an unrelated fruit-bearing plant.

Cassava is the third largest source of food carbohydrates in the world. Nigeria is the world's largest producer of cassava. It is classified as sweet or bitter, depending on the level of toxic cyanogenic glucosides. (However, bitter taste is not always a reliable measure.) Improper preparation of cassava can leave enough residual cyanide to cause acute cyanide intoxication and goiters, and has been linked to ataxia or partial paralysis. Nevertheless, farmers often prefer the bitter varieties because they deter pests, animals, and thieves. In some locations the more toxic varieties serve as a fall-back resource (a "food security crop") in times of famine.

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