Table 2 Components of variance [D (additive), H (dominance), F (additive × dominance) and E (environmental)] following weighted analysis of components of variance for measured attributes in two crosses IUB-13 × FH-115 (Cross 1) and GH-Mubarak × NIAB-Kiran (Cross 2) cotton grown under normal (N) and heat stress (H) conditions

SCY

N1

42.35 ± 21.63

-

-

29.86 ± 6.93

5.39 (4)

H1

37.30 ± 8.26

-

32.57 ± 3.63

7.80 ± 2.64

0.76 (3)

N2

77.57 ± 13.25

-

55.61 ± 6.11

9.31 ± 2.49

2.02 (3)

H2

34.54 ± 8.64

-

34.91 ± 3.74

8.91 ± 2.31

1.20 (3)

GOT

N1

83.37 ± 9.87

-

43.00 ± 4.93

0.79 ± 0.21

0.0005 (3)

H1

86.87 ± 10.11

-

43.43 ± 5.05

0.33 ± 0.09

0.002 (3)

N2

51.59 ± 6.14

-

26.87 ± 3.06

0.58 ± 0.15

0.03 (3)

H2

75.19 ± 8.76

-

38.03 ± 4.38

0.26 ± 0.07

0.0004 (3)

Pol Via

N1

916.09 ± 108.5

-

473.88 ± 54.19

8.49 ± 2.31

0.0006 (3)

H1

1416.84 ± 166.15

-

723.52 ± 83.03

8.11 ± 2.20

0.0004 (3)

N2

999.54 ± 121.59

-

528.17 ± 60.53

18.84 ± 5.12

0.04 (3)

H2

56.87 ± 9.65

-

37.64 ± 4.48

6.81 ± 1.81

0.27 (3)

CMT

N1

400.88 ± 48.01

-

210.65 ± 23.95

5.16 ± 1.40

0.10 (3)

H1

500.42 ± 59.58

-

253.02 ± 29.77

6.51 ± 1.77

0.03 (3)

N2

574.27 ± 69.28

-

299.41 ± 34.53

9.40 ± 2.55

0.01 (3)

H2

511.39 ± 60.54

-

263.91 ± 30.23

4.71 ± 1.28

0.002 (3)

H₂O₂

N1

0.45 ± 0.05

-

0.22 ± 0.02

0.01 ± 0.002

0.03 (3)

H1

0.78 ± 0.09

-

0.39 ± 0.05

0.01 ± 0.002

0.001 (3)

N2

0.36 ± 0.04

-

0.18 ± 0.02

0.01 ± 0.002

0.0001 (3)

H2

0.70 ± 0.08

-

0.35 ± 0.04

0.01 ± 0.002

0.001 (3)

POD

N1

41.52 ± 5.62

-

24.43 ± 2.74

2.13 ± 0.58

0.54 (3)

H1

184.66 ± 23.25

-

97.77 ± 11.53

5.82 ± 1.58

0.04 (3)

N2

83.94 ± 11.45

-

48.11 ± 5.58

4.61 ± 1.24

0.006 (3)

H2

234.56 ± 28.78

-

125.71 ± 14.31

5.03 ± 1.36

1.15 (3)

PRO

N1

0.98 ± 0.11

-

0.49 ± 0.06

0.01 ± 0.002

0.0001 (3)

H1

0.46 ± 0.05

-

0.23 ± 0.03

0.01 ± 0.002

0.001 (3)

N2

0.24 ± 0.03

-

0.12 ± 0.02

0.01 ± 0.002

0.0001 (3)

H2

1.61 ± 0.13

-

0.58 ± 0.06

0.01 ± 0.002

0.01 (3)