Fig. 5. (A) Mean silk trichome surface area, (B) length, (C) number on exposed silk surface, and (D) number per millimeter from exposed silk surface in 1993 and 1994. Means are from four field replications. Within a bulk sample of silks from four ears, two silks were randomly selected, and three positions on the silk were used for measurements. Two measurements were taken and pooled at each position on the silk.