Project Number: 5366-21000-022-07
Project Type: Specific C/A

Start Date: Jul 29, 2004
End Date: Apr 30, 2009

Objective:
EVALUATE 7,300 NATIONAL SMALL GRAINS COLLECTION (NSGC) IRANIAN WHEAT ACCESSIONS AND ADDITIONAL SELECTED NSGC WHEAT GERMPLASM FOR REACTION TO BIOTYPE B OF THE RUSSIAN WHEAT APHID (DIURAPHIS NOXIA). GERMPLASM FOUND RESISTANT IN THIS EVALUATION WILL BE FURTHER SCREENED TO BIOTYPE A.

Approach:
EVALUATIONS WILL BEGIN WITH A GROUP OF 7,300 IRANIAN LANDRACE SELECTIONS THAT WERE RECENTLY ADDED TO THE NSGC. THESE ACCESSIONS HAVE BEEN EVALUATED BY OTHER RESEARCHERS (CIMMYT, UNIV. CALIFORNIA-DAVIS) FOR RUSSIAN WHEAT APHID (RWA) AND OTHER AGRONOMIC CHARACTERISTICS BUT HAVE NOT BEEN EVALUATED FOR RESISTANCE TO THE NEW RWA BIOTYPE B PRESENT IN COLORADO AND ADJACENT STATES. AS MANY OF THE RESISTANT ACCESSIONS FROM THE ORIGINAL SCREENINGS BY THE USDA-ARS (STILLWATER, OK, 1988-1995) ORIGINATED FROM IRAN, THERE IS EXPECTATION THAT THIS NEW COLLECTION WILL CONTAIN VERY PROMISING ACCESSIONS. A SECOND SET OF MATERIALS, NUMBERING APPROXIMATELY 5,000, WILL ALSO BE EVALUATED. THESE ARE MATERIALS FROM VARIOUS ORIGINS THAT HAVE NEVER BEEN EVALUATED FOR RESISTANCE TO RWA BIOTYPE. FROM THIS GROUP OF APPROXIMATELY 12,000 ACCESSIONS, SOURCES IDENTIFYED AS RESISTANT WILL BE EVALUATED IN SEPARATE EXPERIMENTS FOR RESISTANCE TO THE RWA BIOTYPE A. AS EACH CYCLE IS COMPLETED, DATA COLLECTED WILL BE ADDED TO THE GERMPLASM RESOURCES EVALUATION NETWORK (GRIN).Documents SCA with University of Colorado, Ft. Collins, CO.

Project Team

Bockelman, Harold Scott Haley - Professor, Colorado State University, Ft. Collins (208)397-4162

Related National Programs

Plant, Microbial & Insect Genetic Res., Genomics, & Genetic Improv. I (301)