Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Race non-specific resistance to rust diseases in CIMMYT spring wheats
Euphytica, Volume 179, No. 1, Year 2011
Notification
URL copied to clipboard!
Description
Rust diseases continue to cause significant losses to wheat production worldwide. Although the life of effective race-specific resistance genes can be prolonged by using gene combinations, an alternative approach is to deploy varieties that posses adult plant resistance (APR) based on combinations of minor, slow rusting genes. When present alone, APR genes do not confer adequate resistance especially under high disease pressure; however, combinations of 4-5 such genes usually result in "near-immunity" or a high level of resistance. Although high diversity for APR occurs for all three rusts in improved germplasm, relatively few genes are characterized in detail. Breeding for APR to leaf rust and stripe rust in CIMMYT spring wheats was initiated in the early 1970s by crossing slow rusting parents that lacked effective race-specific resistance genes to prevalent pathogen populations and selecting plants in segregating populations under high disease pressure in field nurseries. Consequently most of the wheat germplasm distributed worldwide now possesses near-immunity or adequate levels of resistance. Some semidwarf wheats such as Kingbird, Pavon 76, Kiritati and Parula show high levels of APR to stem rust race Ug99 and its derivatives based on the Sr2-complex, or a combination of Sr2 with other uncharacterized slow rusting genes. These parents are being utilized in our crossing program and a Mexico-Kenya shuttle breeding scheme is used for selecting resistance to Ug99. High frequencies of lines with near-immunity to moderate levels of resistance are now emerging from these activities. After further yield trials and quality assessments these lines will be distributed internationally through the CIMMYT nursery system. © 2010 Springer Science+Business Media B.V.
Authors & Co-Authors
Singh, Ravi Prakash
Mexico, Texcoco
Centro Internacional de Mejoramiento de Maiz y Trigo
Huerta, Julio
Mexico, Santa Catarina
Instituto Nacional de Investigaciones Forestales, Agricolas y Pecuarias
Bhavani, Sridhar
Mexico, Texcoco
Centro Internacional de Mejoramiento de Maiz y Trigo
Herrera-Foessel, Sybil A.
Mexico, Texcoco
Centro Internacional de Mejoramiento de Maiz y Trigo
Singh, Davinder
Kenya, Nairobi
Cimmyt
Singh, Pawan Kumar
Mexico, Texcoco
Centro Internacional de Mejoramiento de Maiz y Trigo
Govindan, Velu
Mexico, Texcoco
Centro Internacional de Mejoramiento de Maiz y Trigo
Mason, R. E.
Mexico, Texcoco
Centro Internacional de Mejoramiento de Maiz y Trigo
Jin, Yue
United States, Saint Paul
Usda Agricultural Research Service, Cereal Disease Laboratory
Njau, Peter N.
Kenya, Nairobi
Kenya Agricultural Research Institute
Crossa, José Luis
Mexico, Texcoco
Centro Internacional de Mejoramiento de Maiz y Trigo
Statistics
Citations: 204
Authors: 11
Affiliations: 5
Identifiers
Doi:
10.1007/s10681-010-0322-9
ISSN:
00142336
Research Areas
Genetics And Genomics
Study Locations
Kenya