landraces : infra-specific diversity & adaptive divergence
DESCRIPTION
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 - PowerPoint PPT PresentationTRANSCRIPT
Agricultural Research Service
Agricultural Research Service
1
Landraces: Infra-specific Diversity
& Adaptive Divergence
Of an Endangered Evolutionary Link
[4]
Agricultural Research Service
Agricultural Research Service
On-Farm Research, Breeding & Selection - WLRs
Agricultural Research Service
Agricultural Research Service
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
Agricultural Research Service
Agricultural Research Service
Farmer Selection Criteria
Environmental: Tolerance to soil limitations Tolerance to climatic factors Biotic pressures
Agronomic criteria Yield Flexibility in planting & harvest Crop morphology
Agricultural Research Service
Agricultural Research Service
Farmer Selection Criteria
Culture, production & use: Labor demand Processing Culinary Storage
Ancillary features Quality & palatability of straw
Agricultural Research Service
Agricultural Research Service
Impact on [Bio]diversity
Different entries selected by different (same) farmers in different locations
Heterogeneous populations
Agricultural Research Service
Agricultural Research Service
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.
Agricultural Research Service
Agricultural Research Service
Types of on-farm Experimentation
• Designed and managed by scientists
• Designed by scientists and managed by farmers
• Designed and managed by farmers.
Agricultural Research Service
Agricultural Research Service
PPB is a strategy to:
Strengthen on-farm “conservation”
Encourage farmers to search, select & manage “local” crop populations.
Agricultural Research Service
Agricultural Research Service
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