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Landraces : Infra-specific Diversity & Adaptive Divergence

Landraces : Infra-specific Diversity & Adaptive Divergence. Of an Endangered Evolutionary Link [4]. On-Farm Research, Breeding & Selection - WLRs. On-Farm Research, Breeding & Selection. Entry point for building participants skills & knowledge in PGR

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Landraces : Infra-specific Diversity & Adaptive Divergence

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  1. Landraces: Infra-specific Diversity & Adaptive Divergence Of an Endangered Evolutionary Link [4]

  2. On-Farm Research, Breeding & Selection - WLRs

  3. On-Farm Research, Breeding & Selection • Entry point for building participants skills & knowledge in PGR • Empowers women, rural institutions & small-holder farmers in community-based crop improvement & biodiversity enhancement • Enhance crop diversity & increase crop yield

  4. Farmer Selection Criteria • Environmental: • Tolerance to soil limitations • Tolerance to climatic factors • Biotic pressures • Agronomic criteria • Yield • Flexibility in planting & harvest • Crop morphology

  5. Farmer Selection Criteria • Culture, production & use: • Labor demand • Processing • Culinary • Storage • Ancillary features • Quality & palatability of straw

  6. Centralized, Non-participatory

  7. De-centralized Participatory PB

  8. Impact on [Bio]diversity • Different entries selected by different (same) farmers in different locations • Heterogeneous populations

  9. Objectives • Farmers and researchers work together as partners in “technology” development, • Earlier adoption of new technology by “participating” farmers • Farmers inputs needed for modification/innovation • Farmers’ assessment may vary (biophysical/socioeconomic circumstances) • Conducted under a wide range of conditions (compared to on-station) • Realistic input/output data for financial analyses • Provide important diagnostic information about farmers’ problems.

  10. Types of on-farm Experimentation • Designed and managed by scientists • Designed by scientists and managed by farmers • Designed and managed by farmers.

  11. PPB is a strategy to: • Strengthen on-farm “conservation” • Encourage farmers to search, select & manage “local” crop populations.

  12. The process can be composed of the following steps: Locate “crop” agro-ecosystems and identify interested communities Organize “diversity” fairs for locating “crop” diversity, collect germplasm & IK Understand and monitor local “crop” diversity Analyze option for adding benefits Set breeding goals for PPB and parent selection with community participation Agree on roles of farmers and researchers Select for “diversity” Strengthen farmers’ seed exchange systems for diffusion/adoption

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