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Table 1 Effects of RHT-B1bE529K on major agronomic traits

From: Phenotypic and transcriptomic characterization of a wheat tall mutant carrying an induced mutation in the C-terminal PFYRE motif of RHT-B1b

Trait F2 BC1F2
Wild a
(n=23)
Het b
(n=40)
Mut c
(n=21)
P Add d DoD e Wild
(n=30)
Het
(n=56)
Mut
(n=33)
P Add DoD
Plant height (cm) 89.8a 101.6b 109.8c <0.0001 10.0 0.18 89.6a 101.8b 108.3c <0.0001 9.4 0.30
Peduncle (cm) 41.9a 47.4b 50.7c <0.0001 4.4 0.23 40.8a 47.1b 49.1c <0.0001 4.2 0.52
2nd internode (cm) 17.0a 19.8b 21.9c <0.0001 2.5 0.14 17.5a 20.1b 21.5c <0.0001 2.0 0.30
3rd internode (cm) 9.1a 11.0b 10.9b <0.0001 0.9 1.11 9.9a 11.8b 13.3c <0.0001 1.7 0.12
4th internode (cm) 6.2a 7.3b 8.3b <0.0001 1.1 0.05 6.8a 8.0b 9.0c <0.0001 1.1 0.09
Internode no. 4.3 4.3 4.2 0.9542    4.3 4.3 4.3 0.6957   
Tiller no. per plant 8.0 7.9 7.6 0.8495    8.1 8.1 7.9 0.8929   
Flag leaf length (cm) 24.6 24.7 25.9 0.2809    24.4 25.2 25.1 0.4041   
Flag leaf width (cm) 2.0 2.0 2.0 0.1277    2.1 2.1 2.0 0.2574   
Days to heading 122.2 121.6 121.2 0.4294    121.5 120.8 120.8 0.4286   
Spike length (cm) 8.4 8.3 8.5 0.7560    8.5 8.6 8.6 0.5930   
Spikelet no. per spike 20.0 20.1 20.3 0.4751    20.0 20.1 20.6 0.0503   
Grain no. per spike 62.0 59.8 60.1 0.7566    59.5a 65.8a 58.8a 0.0672   
1,000 grain weight (g) 53.7 53.9 53.7 0.9791    50.8 53.6 53.8 0.4874   
  1. a, b, c Homozygous RHT-B1b, heterozygous, and homozygous RHT-B1bE529K plants, respectively. d Additive effect. e Degree of dominance calculated as [(heterozygote value – midpoint value between the two homozygotes)/additive effect]. Significant P-values (< 0.05) from the ANOVAs are emphasized with bold letters. Trait values with different letters (a, b, and c) indicate significant difference by Tukey’s multiple comparison test at P < 0.05