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Table 2 Source of variation, degree of freedom, and mean square of the investigated traits of cotton affected by cultivation system, foliage time, and stress modulator type

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

   Plant height Branch number Boll number per plant 10-boll weight 1 000-seed weight Biological yield Seed cotton yield Lint percentage Lint yield
Year (Y) 1 823** 560** 965** 10.9 ns 1 745** 44 101** 1 160** 5.5 ns` 40.7**
Error 1 4 36.2 0.131 15.9 1 742 811 51.9 68.7 36 9.63
Cultivation system (C) 1 21 019** 208** 1 243** 2 285** 10 941** 115 336** 32 636** 1 261**` 5 016**
Y × C 1 847** 16.63** 1 456** 4 653* 3 615** 44 557** 14 433** 4.5 ns 1 322**
Error 2 4 11.5 2.58 7.99 404 2 747 6.69 87.1 64** 19.1
Foliage time (F) 1 767** 4.6 ns 203** 567** 219 ns 237 ns 1 076** 6 93.6**
Modulator type (M) 3 441** 82.7 ** 97.3** 3 062** 3 036** 1 310** 1 135** 80.5** 188**
C × F 1 1 281** 2.54 ns 88.1** 381* 507* 15.2 ns 390** 6 ns` 33.7**
C × M 3 378** 2.59 ns 32.4** 125 ns 203 ns 647** 433** 6.5 ns 71.7**
F × M 3 51.4 ns 2.87 ns 1.74 ns 120 ns 109 ns 154 ns 62.5* 7 ns 9.56*
Y × F 1 434* 0.45 ns 29.9** 144 ns 138 ns 177 ns 59.7 ns 4.5 ns 6.53 ns
Y × M 3 143 ns 1.61 ns 19.4** 685** 925** 567** 16.03 ns 3.5 ns 3.32 ns
C × F × M 3 55.7 ns 0.821 ns 7.50 ns 58.7 ns 26.1 ns 177 ns 23.6 ns 1.75 ns` 3.74 ns
Y × C × F 1 566 ns 3.15 ns 102** 129 ns 440 ns 5.54 ns 181** 2.52 ns 19.1*
Y × C × M 3 94.9 ns 1.84 ns 24.4** 82.4 ns 286 ns 46.8 ns 123** 3.72 ns 18.4*
Y × F × M 3 140 ns 0.99 ns 15.0* 29.9 ns 24 ns 117 ns 4.19 ns 0.592 ns 0.411 ns
Y × C × F × M 3 64.9 ns 0.77 ns 6.47 ns 43.9 ns 247 ns 179 ns 10.1 ns 1.5 ns 1.71 ns
Error 3 56 73.07 1.49 3.84 77.9 120 66.5 16.4 6.01 3.12
CV   12.8 10.2 17.9 12.3 10.3 7.99 9.87 7.86 13.1
Bartlett's test result
 χ2 1 2.76 ns 3.83 ns 3.12 ns 2.35 ns 0.809 ns 3.51 ns 2.69 ns 0.752 ns 3.02 ns
  1. ns not significant
  2. (*) and (**) represent a significant difference at P < 0.05 and P < 0.01, respectively