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Bulletin of the National Research Centre

Table 3 Effect of pre-soaking two sugar beet seed cultivars with tryptophan and irrigated with different salinity levels on photosynthetic pigment contents (mg/100 g fresh weight) at 75 days after sowing

From: The physiological effect of pre-soaking with tryptophan on sugar beet (Beta vulgaris L.) productivity under different levels of salinity stresses

Treatments

Photosynthetic pigment (mg/100 g fresh weight)

Salinity (ppm)

Try. (mM)

Chl. (A)

Chl. (B)

Chl. (A)/(B)

Carotenoids

DS-9004

LP-15

DS-9004

LP-15

DS-9004

LP-15

DS-9004

LP-15

320

0.0

11.90

11.67

5.26

6.29

2.26

1.85

3.87

3.35

2.5

15.62

12.74

6.36

7.04

2.45

1.81

4.64

4.24

5.0

15.33

12.55

5.93

6.43

2.59

1.95

4.41

4.06

2000

0.0

11.66

10.99

5.13

5.75

2.27

1.91

3.43

2.82

2.5

14.85

12.15

6.09

6.17

2.44

1.97

4.46

3.89

5.0

14.48

11.58

5.86

6.09

2.47

1.90

3.95

3.28

4000

0.0

9.80

10.76

4.08

5.38

2.40

2.00

3.11

2.31

2.5

12.85

11.91

5.92

5.87

2.17

2.03

4.23

3.62

5.0

12.66

11.48

5.83

5.70

2.17

2.01

3.87

2.73

6000

0.0

9.20

10.35

4.20

4.70

2.19

2.20

3.07

2.27

2.5

12.55

11.75

5.78

5.49

2.17

2.14

4.23

3.19

5.0

12.37

10.84

5.72

5.31

2.16

2.04

3.34

2.72

8000

0.0

8.92

8.21

3.03

3.97

2.94

2.07

2.95

2.03

2.5

10.98

10.16

5.72

4.49

1.92

2.27

3.60

2.95

5.0

10.31

9.66

5.29

4.38

1.95

2.21

3.26

2.50

LSD5%

0.14

0.10

0.05

0.07

Mean of main effects

Variety

DS-9004

12.23

5.35

2.30

3.76

LP-15

11.12

5.54

2.02

3.06

F sig.

a

a

a

a

Salinity (ppm)

320.0

13.30

6.22

2.15

4.10

2000.0

12.62

5.85

2.16

3.64

4000.0

11.58

5.46

2.13

3.31

6000.0

11.18

5.20

2.15

3.14

8000.0

9.71

4.48

2.23

2.88

LSD5%

0.10

0.08

0.04

0.05

Try.(mM)

0.0

8.62

3.98

1.84

2.43

2.5

10.46

4.91

1.78

3.25

5.0

10.10

4.71

1.79

2.84

LSD5%

0.08

0.06

0.03

0.04

  1. ns non significant
  2. aSignificant
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