carousel
  • The main aim of the Coffee Improvement Thrust is to develop coffee planting material that will meet the challenges of growers by:
    • - modifying the genetic make-up of the plant
    • - adopting strategies to improve overall quality of the produce
  • Current programmes focused on producing genotypes that are:
    • - High yielding
    • - Tolerant to drought
    • - Resistant/tolerant to pests and diseases
    • - Vigorous and easy to establish
    • - Good architecture and ease of management
    • - Good fruiting characteristics
    • - Good berry and bean physical and chemical characteristics
    • - Generally adaptable
  • Robusta coffee plant is essentially out-crossing
  • End-product of breeding therefore:
    • - Clone (selecting the best individuals and propagating them by stem cuttings)
    • - Hybrid (cross of two parents with good specific combining ability)
    • - Improved population (developed through cycles of recurrent selection)
    • - Improved population - synthetic variety (developed through GCA analysis and a collection of genotypes with high GCA)
  • Hybrids and improved populations are distributed to farmers as seed planting material
  • Breeding at CRIG initially focused on clone planting material
  • Clones are, however, not suitable for mass distribution:
    • - Very expensive to multiply due to high initial capital outlay
    • - Very slow and cumbersome to multiply
    • - Not easy to distribute
  • Development of seed planting material therefore embarked on since 1998 to supplement clone planting material with seeds
    • - Less costly to produce
    • - Easier to distribute
    • - Available in larger quantities
List of projects
  • Development of seed planting material of Robusta coffee - Trial 3 (Population development)
  • Development of seed planting material of Robusta coffee - Trial 4 (hybrid development)
  • Development of seed planting material of Robusta coffee - Trial 5 (testing hybrids for adaptability)
  • Characterisation, evaluation and conservation of coffee germplasm
  • Identification of moulds associated with coffee berries and their effect on berry quality
Disciplines under the thrust
  • Plant breeding
  • Agronomy
  • Soil Science
  • Plant pathology
  • Entomology
  • Plant Physiology
  • Biochemistry
  • Microbiology