Table II.

Basipetal IAA transport in Arabidopsis inflorescence segments

Basipetal IAA Transport2-a
Columbia2-btt4(2YY6)2-bLer2-ctt4(85)2-c
cpm
Minus NPA2-d 667 ± 1001176 ± 114675 ± 411131 ± 41
Plus NPA2-d 15 ± 117 ± 1254 ± 36255 ± 37
  • F2-a  IAA transport was measured on basal inflorescence segments after 5 h using 100 nm[3H]-IAA.

  • F2-b  Reported values are average and se of 30 to 40 replicates and transport was measured in the presence and absence of 100 μmNPA.

  • F2-c  Reported values are the average and se of 10 replicates and transport was measured in the presence and absence of 10 μmNPA.

  • F2-d  Comparison of basipetal IAA transport in the absence of NPA indicates that the difference between Columbia and tt4(2YY6) and between Ler and tt4(85) are statistically different with P values < 0.001, as determined by Student's t test analysis. In the presence of NPA there is no significant difference between basipetal transport in Columbia and tt4(2YY6) or Ler and tt4(85) withP values > 0.2, as determined by Student's ttest.