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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
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BMC Plant Biology

ISSN: 1471-2229

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