Sieving stem rust spores for use in inoculation, Njoro, Kenya
Following collection from infected wheat plants using a cyclone collector, stem rust spores are sieved to remove chaff and other detritus, at the Njoro research station, part of the Kenya Agricultural Research Institute (KARI). These spores can be stored for use in inoculation the next season.
Njoro is home to an ongoing screening program, working in close partnership with CIMMYT to identify sources of resistance to the Ug99 race of stem rust. This virulent new strain of the disease, which emerged in Uganda in 1999, is already endemic in the area, making it possible to use Njoro as a testing ground for wheats from all over the world. More than 30,000 wheat lines are now being screened each year.
For more information on stem rust, see CIMMYT's Wheat Doctor: wheatdoctor.cimmyt.org/en/pests-a-diseases/list/122?task=....
For information on collection and inoculation techniques, see the CIMMYT publication "Rust diseases of wheat: Concepts and methods of disease management", available as a pdf at: libcatalog.cimmyt.org/download/cim/38487.pdf.
For more on CIMMYT's ongoing work on Ug99, see the following e-news stories:
2010, "Planting for the future: New rust resistant wheat seed on its way to farmers": www.cimmyt.org/newsletter/231-2010/716-planting-for-the-f....
October 2009, "From Cairo to Kabul: Rust resistant wheat seed just in time": www.cimmyt.org/newsletter/38-2009/460-from-cairo-to-kabul....
December 2008, "Report from the field: Wheat stem rust resistance screening at Njoro, Kenya": www.cimmyt.org/newsletter/37-2008/110-genetic-resources-p....
December 2006, "Threat level rising": www.cimmyt.org/newsletter/82-2006/263-threat-level-rising.
September 2005, "The World’s Wheat Crop is Under Threat from New Disease": www.cimmyt.org/newsletter/86-2005/331-the-worlds-wheat-cr....
Photo credit: Petr Kosina/CIMMYT.
Sieving stem rust spores for use in inoculation, Njoro, Kenya
Following collection from infected wheat plants using a cyclone collector, stem rust spores are sieved to remove chaff and other detritus, at the Njoro research station, part of the Kenya Agricultural Research Institute (KARI). These spores can be stored for use in inoculation the next season.
Njoro is home to an ongoing screening program, working in close partnership with CIMMYT to identify sources of resistance to the Ug99 race of stem rust. This virulent new strain of the disease, which emerged in Uganda in 1999, is already endemic in the area, making it possible to use Njoro as a testing ground for wheats from all over the world. More than 30,000 wheat lines are now being screened each year.
For more information on stem rust, see CIMMYT's Wheat Doctor: wheatdoctor.cimmyt.org/en/pests-a-diseases/list/122?task=....
For information on collection and inoculation techniques, see the CIMMYT publication "Rust diseases of wheat: Concepts and methods of disease management", available as a pdf at: libcatalog.cimmyt.org/download/cim/38487.pdf.
For more on CIMMYT's ongoing work on Ug99, see the following e-news stories:
2010, "Planting for the future: New rust resistant wheat seed on its way to farmers": www.cimmyt.org/newsletter/231-2010/716-planting-for-the-f....
October 2009, "From Cairo to Kabul: Rust resistant wheat seed just in time": www.cimmyt.org/newsletter/38-2009/460-from-cairo-to-kabul....
December 2008, "Report from the field: Wheat stem rust resistance screening at Njoro, Kenya": www.cimmyt.org/newsletter/37-2008/110-genetic-resources-p....
December 2006, "Threat level rising": www.cimmyt.org/newsletter/82-2006/263-threat-level-rising.
September 2005, "The World’s Wheat Crop is Under Threat from New Disease": www.cimmyt.org/newsletter/86-2005/331-the-worlds-wheat-cr....
Photo credit: Petr Kosina/CIMMYT.