Integrating New Technologies for Striga Control: Towards Ending the Witch-hunt
Witchweeds (Striga species) decimate agriculture in much of Africa and parts of Asia, attacking the major cereal grains and legumes, and halving the already very low yields of subsistence farmers. Several years of research have provided promising technologies, based on the fundamental biology of the parasiteOCohost associations, for dealing with this scourge. However, there is an apparent realization that these technologies will fail because highly successful weeds such as Striga evolve resistance to all types of controls unless proven methods are integrated with each other for a more sustainable solution. Integration is often an anathema to basic scientists who typically deal with single variables and solutions. However, key leaders in the development of the new knowledge-based control strategies, already in the field and under development, recently joined forces to develop strategies and projects in order to integrate the technologies in a symposium in Ethiopia in November 2006. The encouraging results are described in this peer-reviewed book, authored by leaders in the field who have been supplying the basic biology, genetics, biochemistry, and molecular information that have offered insights and generated technologies in how to deal with Striga."
Section III Knowledgebased Breeding Translating Information to Products
Opening New Frontiers
The First and Essential Line of Control and Policy Considerations
Africa agriculture agronomic amino acid assays attachment biocontrol biocontrol agents bioherbicide biology breeding Burkina Faso cereal Chapter control of Striga cowpea cultivars D. E. Hess Desmodium effect Ejeta emerged Striga enhance environment Ethiopia evaluation farmers field genetic diversity genotypes germination stimulants gesnerioides grain yield Gressel haustoria haustorial haustorium herbicide host plant host root imazapyr improved inbred lines increased integrated Striga interaction intercropping introgression J. K. Ransom Kenya L. J. Musselman landraces legumes M. C. Press maize markers molecular Orobanche parasitic plants parasitic weeds pathogens pest populations potential production reduced Striga regions resistance genes resistance to Striga rhizosphere season seed bank selection significantly soil fertility sorghum sorghum cultivars Striga asiatica Striga control Striga count Striga emergence Striga hermonthica Striga infestation Striga management Striga plants Striga resistant varieties Striga seed Striga species strigolactones susceptible Table target tested traits transgenic transgenic maize Triphysaria virulence