landraces : infra-specific diversity & adaptive divergence

16
Agricultural R esearch Service Agricultural R esearch Service 1 Landraces: Infra-specific Diversity & Adaptive Divergence Of an Endangered Evolutionary Link [4]

Upload: reece-watkins

Post on 02-Jan-2016

20 views

Category:

Documents


1 download

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 Presentation

TRANSCRIPT

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

Centralized, Non-participatory

Agricultural Research Service

Agricultural Research Service

De-centralized Participatory PB

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

Agricultural Research Service

Agricultural Research Service

Agricultural Research Service

Agricultural Research Service

Agricultural Research Service

Agricultural Research Service

Agricultural Research Service

Agricultural Research Service