Table 11: (a) Wheat characteristics identified as crucial in wheat grain yield with each one of the used statistical techniques under inoculation condition and different water levels. (b) Wheat characteristics identified as crucial in wheat grain yield with each one of the used statistical techniques under noninoculation condition and different water levels.

(a)

Variables Reg Step FA PC Path Cluster Total score X1 x             1 X2 x     x x     3 X3 x       x     2 X4 x x x x x x x 7 X5 x   x   x     3 X6 x x x         3 X7 x           x 2 X8 x   x x x     4 X9 x       x     2 X10 x             1 X11 x       x     2

X1: tiller numbers/plant, X2: spike length, X3: spikelets/spike, X4: spike weight/plant, X5: grains/spike, X6: grain weight/spike, X7: 100-grain weight, X8: total chlorophyll content of flag leaf, X9: biological yield/plant, X10: root weight, X11: leaves area and Y: grain yield. : correlation analysis, Reg: multiple linear regression, Step: stepwise multiple regression, FA: factor analysis, PC: principal component analysis, path: path coefficient analysis, and cluster: cluster analysis.

(b)

Variables Reg Step FA PC Path Cluster Total score x       x     2 x       x     2 x             1 x x x x x x x 7 x x x         3 x x x   x   x 5 x             1 x   x x x     4 x   x   x     3 x x x         3 x x x   x   x 5

= Tiller numbers/plant, = Spike length, = Spikelets/spike, = Spike weight/plant, = Grains/spike, = Grain weight/spike, = 100 − Grain weight, = Total chlorophyll content of flag leaf, = Biological yield/plant, = Root weight, = Leaves area, Y = Grain yield. = Correlation analysis, Reg = Multiple linear regression, Step = Stepwise multiple regression, FA = Factor analysis, PC = Principal component analysis, Path = Path coefficient analysis, and Cluster = Cluster analysis.