Table 3.

Rop2 Affects the Number of Root Hairs per Millimeter of Root

Type of
 PlantNo. of Root Hairs per Millimeter a
MinimumMaximumMean
Wild type223628 ± 5b
Rop2 OX406351 ± 9
CA-rop2284335 ± 5
DN-rop2133021 ± 5b
  • a Hairs were counted on a 2-mm portion of each of nine primary roots. For DN-rop2, hairs were counted on a 1-mm portion of each of 27 primary roots.

  • b Standard error of the difference between two means = 2.078, t = 3.532, P < 0.01.