Submitted to: American Journal of Potato Research
Publication Type: Proceedings
Publication Acceptance Date: March 6, 2009
Publication Date: March 1, 2010
Citation: Haynes, K.G., Hutchinson, C., Hassell, R., Yencho, G., Clough, M., Henninger, M., Halseth, D., Sandsted, E., Porter, G., Ocaya, P. 2010. Agreement between selectors at seven Eastern U.S. locations in the second field generation. American Journal of Potato Research. 87:126.
Clone x location interactions are known to be large for many traits in potatoes. Early generation selection in northern breeding programs may eliminate clones that perform better in other locations. The purpose of this study was to examine the agreement between selectors in the second field generation at seven locations. Selections were made among single-hill plots in Presque Isle, ME in 2006. These selections were planted in 12-hill plots in 2007. Two selectors independently selected in these 12-hill plots, however, all clones were harvested. Eight seed pieces per clone were distributed to FL, SC, NC, NJ, NY, and ME. There were one or two selectors for each location. Agreement between selectors at the same location ranged from 58 to 80%. Agreement between the breeder and the primary selector at each location ranged from 58 to 66%. In general, the breeder and primary selector at each location agreed to discard about half of the clones in the study (range 47-57%). About 25% of the clones were saved by the breeder but not selected at the other location (range 25-32%). The remaining clones were divided somewhat equally between those the breeder would not have saved but the other selector wanted to see again (range 6-17%), and clones that both the breeder and other selector would have saved (range 4-11%). Earlier selection across multiple locations may identify clones for specific locations or more widely adapted clones (poster, Breeding, PAA membership 137).