Fig. 6. Relationship used to convert daily pollen shed density into potential kernel set adopted from Bassetti and Westgate (1994). Data for pollen shed are from passive pollen traps placed at ear level, and kernel set was measured on ears exposed to pollen for 1 d at the indicated densities. The broken line indicates the predicted kernel set if pollen viability were decreased to 63% of that in the Bassetti and Westgate (1994) study.