Figure 1.

Kernel phenotypes. A, Mature kernels. F1 plants of the indicated parental genotype were self-pollinated to generate segregating F2 kernel populations. Representatives of the three segregating kernel phenotypes are shown. Sugary kernels are shrunken and translucent compared with the wild type. Dull kernels have a tarnished appearance, a deeper orange color than the wild type particularly at the crown, and exhibit characteristic small indentations at the abgerminal base. B, Mature kernels from a su1-Ref/su1-Ref plant. C, Glucan stains. Kernels of the indicated genotype were harvested 20 DAP, sliced longitudinally, and dipped in I₂/KI solution. Dark blue color indicates starch, and brown or tan color indicates phytoglycogen.