Several maize breeding lines and populations were screened for the transposable element Uq. An isolation plot was used in which the lines of interest (assumed to be c/c) were detasseled and pollinated by a c-ruq tester. Resulting ears on the detasseled plants were heterozygous for c and c-ruq and the presence, absence and number of Uq could be determined. The following populations contained Uq elements:
Hays Golden (Gardner, C.O., 1976. In Proc. Int. Cong. Quant. Genet., E. Pollak et al., eds., Iowa State Univ. Press. Pp. 475-489).
Iowa Long Ear (Cortez-Mendoza, H. and A.R. Hallauer, 1979. Crop Sci. 19:175-178).
Iowa Stiff Stalk Synthetic (Hallauer, A.R., W.A. Russell, and O.S. Smith, 1983. Stadler Symp. 15:83-104).
BS11 (Hallauer, A.R., Personal communication).
Lancaster and Kolkmeier (Walejko, R.N., and WA. Russell. 1977. Crop Sci. 17:647-651).
Illinois Oil and Protein Lines (Dudley, JW. 1976. In Proc. Int. Cong. Quant. Genet., E. Pollak, et al., eds., Iowa State Univ. Press. Pp. 459-473).
Jean Cormack and Peter A. Peterson
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