Mostrando ítems 1-10 de 45
Understanding global trends in the use of wheat diversity and international flows of wheat genetic resources
This paper discusses the centers of origin and diversity for bread wheat; sketches historical patterns in the sources and use of wheat genetic resources in modern plant breeding; identifies and compares indicators of genetic ...
Using economics to explain spatial diversity in a wheat crop: Examples from Australia and China
Spatial diversity indicators may serve an important function for policymakers as they seek to manage crop genetic diversity and potential externalities associated with diffusion of some types of genetically improved crops. ...
New wheat varieties and the small farmer
Sources of productivity growth in wheat: A review of recent performance and medium-to long-term prospects
Sources of yield growth in wheat are investigated based on a stylized framework of technical change. Evidence suggests that the relative contribution of input intensification to yield growth has diminished in recent years ...
Changing competitiveness of the wheat sector of Kazakhstan and sources of future productivity growth
Economic incentives in Kazakhstan have been radically reshaped since the Soviet era ended in 1991. In the first phase of transition, the economy and agricultural sectors declined by 40-50%. Overall economic growth refused ...
Impact of Mexican germplasm on Brazilian wheat cropping: an ex-post economic analysis
This paper reviews and analyzes economic returns to wheat research in Brazil's main wheat-producing regions in Rio Grande do SuI and Paranci. Between 1975 and 1991, the area planted to wheat in Brazil increased significantly ...
Farmer plant breeding from a biological perspective: Implications for collaborative plant breeding
Plant breeding by research has become increasingly isolated from the plant breeding of farmers. Collaborative plant breeding (CPB) offers the possibility of bringing these two plant breeding traditions together to increase ...
Adoption and impact of high yielding wheat varieties in Northern Tunisia
This study assesses the extent to which durum and bread wheat high yielding varieties (HYVs) have been adopted by farmers in northern Tunisia, a region which accounts for more than 80 degrees ' of the nation's durum wheat ...
Understanding farm level technology adoption: lessons learned from CIMMYT's micro surveys in Eastern Africa
Drawing on a series of technology adoption studies carried out by the International Maize and Wheat Improvement Center (CIMMYT) in collaboration with national agricultural research systems in Eastern Africa during 1996-98, ...