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Table 6 The main effects of cultivation system, foliage time, and stress modulator type on some biochemical properties

From: The effect of time and type of stress moderators on yield and yield components of cotton on conventional and double-cropping systems under saline conditions

 

Chlorophyll a

Chlorophyll b

Total chlorophyll

Carotenoid

Proline

Na

K

Na/k

/(mg.g–1 FW)

/(μmol.g–1 FW)

/(mg·g–1 DW)

Cultivation system

 Conventional

1.452 ± 0.09a

1.32 ± 0.15a

2.78 ± 0.53a

0.811 ± 0.03a

10.6 ± 2.3a

61.7 ± 8.6a

51.3 ± 5.1a

1.20 ± 0.05a

 Double-cropping

0.691 ± 0.05b

0.872 ± 0.07b

1.56 ± 0.48b

0.612 ± 0.02b

9.82 ± 2.0b

52.1 ± 4.7b

43.8 ± 5.2b

1.18 ± 0.04a

Foliage time

 Flowering

0.982 ± 0.67b

0.981 ± 0.08b

1.96 ± 0.27b

0.733 ± 0.04a

9.41 ± 1.9b

56.2 ± 5.4a

45.1 ± 10.4b

1.28 ± 0.04a

 Flowering + bolling

1.02 ± 0.08a

1.22 ± 0.11a

2.39 ± 0.34a

0.682 ± 0.03b

11.1 ± 2.8a

57.5 ± 5.26a

49.9 ± 3.9a

1.29 ± 0.06a

Modulator type

 Water control

0.581 ± 0.02c

0.572 ± 0.03c

1.15 ± 0.06d

0.391 ± 0.02d

7.45 ± 0.81c

74.2 ± 5.3a

42.1 ± 2.6b

1.71 ± 0.03a

 GB

1.15 ± 0.07b

1.03 ± 0.07b

2.18 ± 0.08c

0.711 ± 0.03c

10.8 ± 1.19b

58.3 ± 5.1b

48.9 ± 5.5a

1.31 ± 0.05b

 SA

1.21 ± 0.14b

1.31 ± 0.12ab

2.48 ± 0.11b

0.822 ± 0.02b

11.31 ± 1.17a

41.5 ± 6.1d

50.2 ± 5.8a

0.861 ± 0.03c

 SNP

1.38 ± 0.18a

1.49 ± 0.09a

2.87 ± 0.09a

0.911 ± 0.03a

11.33 ± 1.56a

53.58 ± 2.2c

48.8 ± 7.2a

1.18 ± 0.04b

  1. Similar letters within the same column denote insignificant differences based on FLSD level of 5% (Mean ± SD)