Comparing Relationships among Yield and Its Related Traits in Mycorrhizal and Nonmycorrhizal Inoculated Wheat Cultivars under Different Water Regimes Using Multivariate Statistics

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	𝑅	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.
𝑅: 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	𝑅	Reg	Step	FA	PC	Path	Cluster	Total score
𝑋1	x				x			2
𝑋2	x				x			2
𝑋3	x							1
𝑋4	x	x	x	x	x	x	x	7
𝑋5	x	x	x					3
𝑋6	x	x	x		x		x	5
𝑋7	x							1
𝑋8	x		x	x	x			4
𝑋9	x		x		x			3
𝑋10	x	x	x					3
𝑋11	x	x	x		x		x	5

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, Y = Grain yield.
𝑅 = 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.