This document discusses the global agricultural research system, which is divided into two sections: national agricultural research systems (NARS) and international agricultural research centers (IARCs). It provides examples of specific research centers for various crops like wheat, maize, rice, cotton, dryland systems, and others. National research is conducted by institutes like the Indian Council of Agricultural Research (ICAR) and state agricultural universities, while international research is led by centers like CIMMYT for wheat and maize, the International Rice Research Institute, and ICRISAT for grain legumes.