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These terms define your current search. Click the × to remove a term. Breeding and Genetic Improvement: breeding > plant breeding > variety trials × 104 items, grouped by Taxa - Viruses and Viroids (view ungrouped items) DNA viruses (1)    (Click to View) Marker-Assisted Introgression of Resistance to Cassava Mosaic Disease into Latin American Germplasm for the Genetic Improvement of Cassava in Africa Crop science