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Decentralized selection and participatory approaches in plant breeding for low-input systems

Decentralized selection and participatory approaches in plant breeding for low-input systems,Julie C. Dawson,Kevin M. Murphy,Stephen S. Jones

Decentralized selection and participatory approaches in plant breeding for low-input systems   (Citations: 9)
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Heterogeneous environments make it diYcult to apply consistent selection pressure because often it is diYcult to identify a single or a few supe- rior genotypes across all sets of conditions. However, when the target system is characterized by heteroge- neity of environmental stress, varieties developed in high-yielding conditions may fail to satisfy farmers' needs. Although this type of system is often found in marginal environments of developing countries, het- erogeneous environmental conditions are also a fea- ture of organic and low-external-input systems in developed countries. To meet the needs of these sys- tems, breeding programs must decentralize selection, and although decentralized selection can be done in formal breeding programs, it is more eYcient to involve farmers in the selection and testing of early generation materials. Breeding within these target systems is challenging, both genetically and logisti- cally, but can identify varieties that are adapted to farming systems in marginal environments or that use very few external inputs. A great deal has been pub- lished in recent years on the need for local adaptation and participatory plant breeding; this article reviews and synthesizes that literature.
Published in 2007.
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