Abstract Cassava is a major staple and food security
crop in Africa which can produce a crop under
uncertain rainfall and low fertility conditions. However,
it suffers from several pests and diseases, with
Cassava Mosaic Disease (CMD) being the main biotic
constraint in production in sub-Saharan Africa. It is
caused by cassava mosaic geminiviruses. Plants
infected with CMD usually produce a few or no
storage roots. Markers associated with resistance
genes to CMD have been mapped, including a major
dominant gene, CMD2. Eight CMD resistant genotypes
from CIAT were used in crosses with three
cassava landraces and one IITA breeding genotype.
CMD evaluation was done on the parents and 525 F1
progenies comprising of individuals pre-selected for
CMD resistance based on average severity scores of 1
and 2. Multiple marker analysis was used to screen for