Crop lead centers

 

Cassava is planted on about 16 million hectares, with 50 percent in Africa, 30 percent in Asia, and 20 percent in Latin America. Total root production is around 152 million tons.

Under favourable experimental conditions, cassava as a monocrop can yield as much as 90 tons of fresh roots per hectare. But it is usually grown in poor soils and harsh climates and in association with other crops, such as maize, beans, or cowpeas. Under these conditions average yields in tons of fresh roots per hectare are much lower: 9.6 tons worldwide; 7.7 tons in Africa; 12.7 in Latin America; and 12.9 in Asia.

It originated from Brazil and was introduced in Africa by Potuguese traders in the 16th century. Today, it is a dietary staple in much of tropical Africa. It is rich in carbohydrates, calcium, vitamins B and C, and essential minerals. However, nutrient composition differs according to variety and age of the harvested crop, and soil conditions, climate, and other environmental factors during cultivation.
 

Biological information

Manihot esculenta, also called cassava or manioc, is a perennial woody shrub with an edible root, which grows in tropical and subtropical areas of the world.

Cassava is a diploid species belonging to the Euphorbiaceae family with 18 pairs of chromosomes and a genome size of 1C=760 Mbp. Genome sequencing and assembly has been completed under the Cassava Genome Project. Genomic data can be found on Phytozome.

 
 
Crop database

To obtain the Central Database for Cassava (which provides historical phenotyping data, germplasm information, trait information, and some genotyping data), download the Breeding Management System.

Data curators: 

  • Agbona Afolabi (IITA)
  • Arturo Franco (CIAT)
     

Phenotyping


Molecular markers

Sources:

http://www.iita.org/cassava

http://webapp.ciat.cgiar.org/ciatinfocus/cassava.htm

http://www.phytozome.net/cassava.php#D2

photos: © N. Palmer - CIAT
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