Figure 1.—

Mature inflorescence phenotype of the Bif1 mutant. (A) Mature tassels of normal, Bif1/+, and Bif1/Bif1 plants. In the normal tassel, long branches are indicated at the base of the main spike. Spikelet pairs cover the branches and the main spike. In the Bif1 mutants, there are reduced numbers of branches and spikelets in the tassel. (B) Mature ears of normal, Bif1/+, and Bif1/Bif1 plants, showing fewer kernels and disorganized rows in Bif1 mutants. (C) Quantification of tassel branch number. (D) Quantification of tassel spikelet number. (E) Percentage of spikelets that occur singly vs. paired. Bars represent mean value and error bars represent standard error of the mean.