The importance of rice-wheat cropping systems in meeting present and future food needs in South Asia is reviewed. Evidence from a number of factor productivity studies, which analyze yield trends after adjusting for changes ...

Este informe documenta el número y los tipos de variedades e híbridos de maíz lanzados por los programas públicos de mejoramiento entre 1966 y 1997; describe las variedades e híbridos comercializados por organismos públicos ...

This report, which updates and extends the findings of an earlier CIMMYT study published in 1994, documents the impacts of international maize breeding research in the developing world. Covering the period 1966-98, the ...

This paper describes the current state of international plant breeding research and explains why centralized approach to germplasm improvement, so successful in the past, is being transformed by decentralized local breeding ...