Skip to main content

Table 4 Means and standard errors for plant height show the impact of the growth stages (tillering, booting, flowering and anthesis), the stress durations (0, 7, 14, 21-days), and the periodic stress in response to drought for specific alleles of the reduced height genes

From: Developmental program impacts phenological plasticity of spring wheat under drought

Description Tall, Rht-a/a Semi-dwarf, Rht-a/b Dwarf, Rht-b/b
Growth stage effect
Tillering-nonstress (control) 70.67 ± 3.05 50.21 ± 2.64 16.33 ± 5.28
Tillering imposed stress 50.63 ± 2.5* 41.01 ± 2.17* 17.28 ± 4.35
Booting-nonstress (control) 70.44 ± 2.03 48.67 ± 1.76 17.67 ± 3.5
Booting imposed stress 32.63 ± 3.0** 30.82 ± 2.6** 13.83 ± 5.2
Heading-nonstress (control) 67.0 ± 2.06 46.83 ± 1.78 16.17 ± 3.57
Heading imposed stress 62.78 ± 1.82 44.42 ± 1.58 12.28 ± 3.16*
Anthesis-nonstress (control) 67.11 ± 1.71 46.33 ± 1.48 14.0 ± 2.9
Anthesis imposed stress 52.15 ± 1.90* 40.25 ± 1.64* 13.05 ± 3.29
Stress duration effect
0-day 68.80 ± 1.11 48.01 ± 0.96 16.04 ± 1.92
7-day 53.28 ± 2.33** 42.36 ± 2.02* 14.0 ± 4.03
14-day 47.55 ± 2.10** 39.22 ± 1.82** 14.87 ± 3.64
21-day 47.80 ± 2.63** 35.79 ± 2.28** 13.46 ± 4.56
Periodic stress effect
Periodic-nonstress control (0 day) 63.77 ± 1.65 44.33 ± 1.43 14.17 ± 2.86
Periodic-7 day 38.89 ± 3.55** 33.08 ± 3.08* 14.17 ± 6.16
Periodic-14 day 44 ± 3.98* 31.92 ± 3.4* 12.67 ± 6.89
Periodic-21 day 47.44 ± 4.4* 28.92 ± 3.81* 9.5 ± 7.6*
  1. * and ** Significant at P < 0.1 and 0.05 level of probability, respectively by the LSD test