Table I.

Phenotypic analysis of WT and tt4(2YY6) Arabidopsis plants

WTtt4(2YY6)1-a
Adult aerial phenotype1-b
 Primary inflorescence length (cm)43 ± 129 ± 11-165
 Number of lateral branches2.5 ± 0.21.8 ± 0.2*
 Inflorescence stem diameter (mm)1.1 ± 0.040.70 ± 0.021-165
 No. of 2° inflorescence stems4.0 ± 0.312.0 ± 0.41-165
 AnthocyaninsYesNo
Root development1-c
 Adventitious root no.0.8 ± 0.22.2 ± 0.31-165
 Lateral root no.4.5 ± 0.58.8 ± 0.91-165
 Primary root length (mm)35 ± 0.838 ± 1.1*
  • F1-a  The phenotypic characteristics were compared for WT and tt4(2YY6) using a two-tailed Student'st test and the P values are reported.

  • * , P < 0.05;

  • F1-165 , P < 0.001.

  • F1-b  Fifty-five-day-old plants were grown in a 21°C incubator programmed for 16 h of light (90 μmol s−1 m−2) followed by 8 h of dark. Reported values are the average and se of six individual plants per genotype.

  • F1-c  Seven-day-old seedlings were grown under continuous white light (80–90 μmol s−1 m−2) at room temperature. Reported values are the average and se of 10 seedlings per genotype.