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Table 4 Analysis of variance, mean and standard errors for the activity of antioxidant enzymes and abscisic acid within leaf and spike under well-watered and drought conditions

From: Activities of leaf and spike carbohydrate-metabolic and antioxidant enzymes are linked with yield performance in three spring wheat genotypes grown under well-watered and drought conditions

Leaf Antioxidants (nkat/g FW)

Genotypes

L1

L2

L3

P value

WW

D

WW

D

WW

D

 Dehydroascorbate reductase (DHAR)

0.32 ± 0.04

0.75 ± 0.17

0.64 ± 0.22

0.91 ± 0.15

0.59 ± 0.09

0.55 ± 0.12

PG = 0.018

PW = 0.06

P W*G = 0.23

 Glutathione reductase (GR)

12.69 ± 1.98

5.28 ± 0.21

4.97 ± 1.41

8.16 ± 5.48

9.03 ± 2.81

9.23 ± 2.01

PG = 0.44

PW < 0.46

P W*G = 0.07

 Glutathione-S-transferase (GST)

2.28 ± 0.68

13.47 ± 0.26

3.19 ± 0.26

11.08 ± 0.21

1.49 ± 0.29

10.27 ± 0.2

PG < 0.001

PW < 0.001

P W*G < 0.001

 Peroxidase (POX)

9.65 ± 0.49

8.76 ± 2.98

3.08 ± 0.49

2.90 ± 0.42

4.75 ± 1.07

2.91 ± 0.82

PG < 0.001

PW = 0.4

P W*G = 0.83

 Cell wall peroxidase (cwPOX)

4.11 ± 0.71

4.28 ± 0.21

5.6 ± 0.32

4.14 ± 0.29

6.46 ± 0.50

4.76 ± 0.19

PG = 0.009

PW = 0.007

P W*G = 0.06

 Monodehydroascorbate reductase (MDHAR)

0.28 ± 0.10

0.13 ± 0.04

0.38 ± 0.13

0.22 ± 0.16

0.08 ± 0.03

0.12 ± 0.02

PG = 0.056

PW = 0.17

P W*G = 0.36

 Abscisic acid (ng/g FW)

1045 ± 263.8

4776 ± 595

1868 ± 685.5

2062 ± 362.4

428 ± 132.4

3672 ± 933.1

PG < 0.001

PW < 0.001

P W*G < 0.001

Spike Antioxidants (nkat/g FW)

 Genotypes

L1

 

L2

 

L3

 

P value

WW

D

WW

D

WW

D

 Dehydroascorbate reductase (DHAR)

0.84 ± 0.03

0.96 ± 0.04

2.12 ± 0.19

1.52 ± 0.12

1.02 ± 0.12

0.91 ± 0.24

PG < 0.001

PW = 0.11

P W*G = 0.06

 Glutathione reductase (GR)

3.90 ± 0.68

1.24 ± 0.36

1.14 ± 0.48

2.34 ± 0.67

4.21 ± 0.71

4.09 ± 0.43

PG = 0.002

Pw = 0.27

P W*G = 0.01

 Glutathione-S-transferase (GST)

2.63 ± 0.67

13.47 ± 0.20

2.24 ± 0.51

11.09 ± 0.34

1.39 ± 0.68

10.28 ± 0.16

PG < 0.001

PW < 0.001

P W*G = 0.07

 Peroxidase (POX)

1.87 ± 0.07

1.88 ± 0.09

1.27 ± 0.11

0.91 ± 0.14

3.27 ± 0.38

2.35 ± 0.28

PG < 0.001

PW = 0.67

P W*G = 0.052

 Cell wall peroxidase (cwPOX)

3.55 ± 0.17

2.82 ± 0.08

2.60 ± 0.40

2.47 ± 0.31

2.92 ± 0.34

3.31 ± 0.19

PG = 0.053

Pw = 0.45

P W*G = 0.15

 Monodehydroascorbate reductase (MDHAR)

0.37 ± 0.08

0.26 ± 0.13

0.05 ± 0.02

0.08 ± 0.04

0.47 ± 0.07

0.26 ± 0.04

PG < 0.001

PW = 0.11

P W*G = 0.27

 Abscisic acid (ng/g FW)

818 ± 166.4

3403 ± 884.4

1751 ± 461.1

1057 ± 64.3

487 ± 101.6

1554 ± 399.6

PG = 0.014

PW = 0.002

P W*G < 0.001

  1. WW Well-watered, D Drought, PW P value of drought effect, PG P value of genotype effect and PWxG P value of the interaction of drought by genotype