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Fight against cassava disease

31 March 2010 2,213 views No Comment

IITA is partnering with the Agricultural Research Institute (ARI), Tanzania, and the National Agricultural Research Organisation (NARO), Uganda, to identify and use molecular markers for faster and more accurate breeding of cassava varieties resistant to Cassava Brown Streak Disease (CBSD).

Cassava brown streak disease symptoms on cassava roots. Photo by IITA.

Cassava brown streak disease symptoms on cassava roots. Photo by IITA.

The disease, caused by the Cassava Brown Streak Virus (CBSV), results in a dry rot that renders the tuberous roots inedible. It is one of the greatest threats to food security in sub-Saharan Africa.

Cassava is an important staple food from which over 200 million people derive over 50% of their carbohydrate intake.
IITA and ARI have identified a few varieties with some level of resistance to the disease.

The four-year project, funded by the Bill & Melinda Gates Foundation, aims to identify the DNA markers associated with the resistance genes in these varieties and integrate marker-assisted selection into cassava breeding programs.

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