Genotype | Day 12 | Day 24 |
---|---|---|

Ler | 55.6 ± 0.99 (n = 5) | 57.3 ± 1.48 (n = 10) |

cna-1 | 72.7 ± 1.72 (n = 10) | 61.1 ± 1.67 (n = 15) |

The size of the shoot apical meristem (in micrometers) of

*cna-1*and L*er*plants at 12 and 24 d old was determined. The mean ± standard error is presented. The difference between means is statistically significant on day 12 (*t*test, P < 0.0001) but is less statistically significant on day 24 (*t*test, P = 0.1).