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BACKGROUNDSignificant losses in sorghum biomass and grain yield occur in sub‐Saharan Africa owing to infection by the root‐parasitic weed Striga hermonthica (Del.) Benth. One strategy to avoid these losses is to adopt resistant crop varieties. For further delineation of the role of germination stimulants in resistance, we conducted a field experiment employing six sorghum genotypes, in eastern Sudan,...
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