1a.Objectives (from AD-416):
Support seed increase, distribution and database development for the stem rust-related winter wheat nursery in the Pacific Northwest.
1b.Approach (from AD-416):
The nursery currently operated by the cooperator has wheat lines that have been grown in the CIMMYT/ARS nursery in Ankara, Turkey, with quarantine and inspection handled through the Aberdeen ARS location. This nursery will be maintained, and expanded so that sufficient seed for distribution and short-term (several years) storage can be produced. The ARS Aberdeen location will be the site for seed archiving. Personnel funded under this SCA will collect limited agronomic trait data from the nursery, and will manage a database of trait information that is collected in this nursery and by other scientists who subsequently use the seed in their local field tests. The product of this effort will be a database for use by wheat breeders who wish to use lines from this nursery, including lines that have been tested in the CIMMYT nursery for resistance to Ug99, in their breeding programs.
This research supports the national Ug99 wheat breeding effort by supplying seed and associated data to cooperating wheat programs throughout the U.S. This research relates to objective 1C of the in house project, “Identify germplasm and increase seed for wheat and barley lines with resistance to stem rust Ug99”. In 2012, 493 candidates for the 20th Facultative and Winter Wheat Observation Nursery (FAWWON)and 75 lines for the International stem rust nursery were increased in the greenhouse. Small amounts of seed of these lines were made available to North American wheat breeders and 8 sets of packets were sent out in fall, 2012. Lines that were selected for the irrigated 20th FAWWON (145), the semi-arid 20th FAWWON (103) were planted in the field for increase along with the 75 lines in the International stem rust nursery. These nurseries will be harvested in the fall and seed will be distributed to 7 North American collaborators and 12 South American collaborators. Due to complications with Animal and Plant Health Inspection Service (APHIS) requirements for quarantine, these nurseries will be discontinued after the 2013 harvest.