Sorghum is the 5th most important cereal crop worldwide. It is mainly cultivated in dryland areas of Africa and Asia, and also in the Americas. Average grain yields range from 300 kg/ha in Africa to 3400 kg/ha in America. Parasitic weeds of the genus Striga are the major biotic constraint to agricultural production in sub-Saharan Africa. Cultivation of crop cultivars resistant to Striga is of particular advantage to farmers, since it does not require investments in materials or labor.

1. 
 
 












 


 
 





 

 



 



 




 

 





 



 







 









2. 






 




















 

























































