Crop Variety Improvement and Its Effect on

This volume reports on the productivity impacts of varietal improvement research conducted at a number of international centres affiliated with the Consultative Group on International Agricultural Research. Such centres have been at the forefront of a 40-year effort to breed new varieties of the world s staple food crops. The volume is the main product of a study initiated and supported by the Impact Assessment and Evaluation Group (now Standing Panel on Impact Assessment) of the CGIAR. Descriptive data and econometric models are used to evaluate the impact of research on eleven crops and in three country case studies (Brazil, China and India).

Contributors	p. ix
Foreword	p. xiii
Acknowledgements	p. xxi
Acronyms and Abbreviations	p. xxiii
Introduction and Methodology	p. 1
Study Design and Scope	p. 1
Crop Genetic Improvement in Developing Countries: Overview and Summary	p. 7
Objectives and Methodology: Crop Genetic Improvement Studies	p. 39
Crop Studies	p. 47
Wheat	p. 47
International Research and Genetic Improvement in Rice: Evidence from Asia and Latin America	p. 71
Ecological Diversity and Rice Varietal Improvement in West Africa	p. 109
Impacts of CIMMYT Maize Breeding Research	p. 135
Impact of IITA Germplasm Improvement on Maize Production in West and Central Africa	p. 159
Impacts of Genetic Improvement in Sorghum	p. 183
Impacts of Genetic Enhancement in Pearl Millet	p. 215
The Impact of International and National Investment in Barley Germplasm Improvement in the Developing Countries	p. 241
The Impact of CIAT's Genetic Improvement Research on Beans	p. 257
Economic Impact of International and National Lentil Improvement Research in Developing Countries	p. 275
Impacts of Genetic Improvement in Groundnut	p. 293
Potato Genetic Improvement in Developing Countries and CIP's Role in Varietal Change	p. 315
The Impact of IARC Genetic Improvement Programmes on Cassava	p. 337
Country Studies	p. 357
Objectives and Methodology for Country Studies	p. 357
The Impact of Investments in Agricultural Research on Total Factor Productivity in China	p. 361
Crop Genetic Improvement Impacts on Indian Agriculture	p. 387
Brazil	p. 409
Synthesis	p. 427
Modern Variety Production: a Synthesis	p. 427
Production Impacts of Crop Genetic Improvement	p. 447
The Economic Consequences of Crop Genetic Improvement Programmes	p. 473
Index	p. 499
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Crop Variety Improvement and Its Effect on Productivity : The Impact of International Agricultural Research

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