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Showing items 1 through 9 of 6.
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Mexique, Canada, Guatemala, Afrique septentrionale, Asie méridionale
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 diversity used by social and biological scientists; reviews the relationship of wheat genetic diversity to yield stability and vulnerability to disease; develops a profile of the structure of genetic variation in wheat in the developing world today; and investigates how scientific plant breeding has influenced the structure of genetic variation among the major bread whe
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Library Resource
Mexique, Amérique latine et Caraïbes
Starting with a discussion of the scientific versus the traditional methods of land evaluation and perception, the authors formulate a methodological framework to integrate both perspectives into a geographic-information/expert-system environment aimed at sustainable development of a rural community, and present a case study in Central Mexico.
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Library Resource
Mexique, États-Unis d'Amérique, Venezuela, Colombie, Pays-Bas, Argentine, Pérou
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Maroc, République dominicaine, Mexique, Chine, Italie, Bolivie, Cuba, Cameroun
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Library Resource
Marine fisheries, as well as fisheries in large lakes, depend on the coastal area in a variety of ways. Most capture fisheries are based on coastal stocks; others exploit offshore stocks which spend part of their lives in inshore waters, e.g., in a nursery or feeding area. Fish stocks also rely on primary productivity in the coastal area as an important part of the food chain. Coastal aquaculture is also heavily dependent on the coastal area for space and resources.
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