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Table 2 Mean comparison of root and related shoot traits among the S42IL population, Scarlett and ISR42-8 under control and drought stress conditions

From: Wild barley introgression lines revealed novel QTL alleles for root and related shoot traits in the cultivated barley (Hordeum vulgareL.)

Traita

Genotype

Meanb ± SEc

Minimum

Maximum

Control

Drought

Control

Drought

Control

Drought

RL

S42IL

46.4b ± 0.5

46.0b ± 0.5

25.0

18.0

82.0

81.0

 

ISR42-8

64.9a ± 4.1

56.0a ± 2.2

52.0

48.0

84.0

64.0

 

Scarlett

42.4c ± 1.1

37.4c ± 1.3

37.0

34.0

45.0

44.0

RDW

S42IL

4.6b ± 0.1

4.1b ± 0.1

1.7

2.0

11.5

8.8

ISR42-8

14.9a ± 2.7

6.9a ± 1.0

7.0

4.5

27.1

10.7

Scarlett

3.4c ± 0.2

3.1c ± 0.1

2.7

2.8

3.8

3.4

RV

S42IL

43.9b ± 0.8

38.3b ± 0.5

10.0

14.0

120.0

80.0

 

ISR42-8

130.3a ± 18.9

67.3a ± 10.5

80.0

43.0

210.0

115.0

 

Scarlett

34.3c ± 2.3

32.3c ± 0.9

25.0

30.0

40.0

35.0

TIL

S42IL

10.1b ± 0.1

7.8b ± 0.2

6.5

3.8

20.0

13.3

 

ISR42-8

16.5a ± 0.4

11.3a ± 0.8

14.3

8.5

17.8

14.0

 

Scarlett

8.7c ± 0.4

6.9b ± 0.7

6.8

4.8

9.8

9.3

GH

S42IL

4.5b ± 0.1

4.5b ± 0.2

2

2

5

5

 

ISR42-8

1a ± 0.0

1a ± 0.0

1

1

1

1

 

Scarlett

5c ± 0.0

5c ± 0.0

5

5

5

5

  1. aTrait: RL = Root length (cm), RDW = Root dry weight (g), RV = Root volume (cm3), TIL = Tiller number per plant, GH = Growth habit.
  2. bThe means of S42ILs, ISR42-8 and Scarlett were calculated as an average of the phenotypic data for each trait across 2012 and 2013 for each treatment separately. Statistical differences across means are indicated with letters a, b and c.
  3. cStandard error.