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Fig. 1. Experimental design and results for California. (A) Experimental design. Source plot was 1.2 ha (15 m x 750 m), bordered with male-sterile maize 18 m wide on the south. Four replications of receptor plots were planted at each distance and time from the source plot (T1–T5 in the figure). (B) In 2001, receptor plots were planted at 1- and 2-wk intervals from the source plot. Approximately 9.3 million kernels were evaluated. (C) In 2002, receptor plots were planted at 2- and 3-wk intervals from the source plot. 
17.5 million kernels were evaluated. Total xenia kernels from all replicates are shown.
