Genetic interactions between bam1 and er and CLV pathway mutants. (A) Valve number in plants homozygous for clv1, clv2, crn, bam1-3, and er-3 single and double mutants. Values for valve number represent the average of 30 flowers for >20 plants. (B) Floral meristem width and height in clv1, clv2, crn, bam1-3, and er-3 single and double mutants. (C) Inflorescence meristem width and height in clv1, clv2, crn, bam1-3, and er-3 single and double mutants. N > 5 for each mutant for both IM and FM measurements. a, two-tailed t test (P < 0.01). b, two-tailed t test (P < 0.05). Error bars represent the standard deviation above and below the mean. a, two-tailed t test (P < 0.01). b, two-tailed t test (P < 0.05), indicating that values are significantly greater than wild type. Significance of the values for the double mutants was tested against each single mutant.