Figure 4.—

Fertilization rate of stt1 embryo sacs. Heterozygous stt1/+ ears were pollinated by wild type and fixed 3 or 6 DAP. Embryo sacs were classified as WT or stt1 and as fertilized with endosperm proliferation, lacking both PT entry and endosperm proliferation, or having PT entry without endosperm proliferation. For 3 DAP, average ratios ± SEM are shown, N = 4 independent crosses for a total of 162 WT individuals and 148 stt1 individuals. For 6 DAP, ratios are shown for 1 cross (N = 36 for WT, N = 42 for stt1). Significantly different from WT (*P < 0.05 or **P < 0.001).