Table 6 Principal component analysis (PCA) of different quantitative agro-morphological traits.

From: Assessment of agro-morphological variability of dry-season sorghum cultivars in Chad as novel sources of drought tolerance

Principal Component

F1

F2

F3

F4

F5

Eigenvalue

5.12

5.00

4.30

1.85

1.32

% total variance

23.35

22.74

19.56

8.42

5.98

Cumulative variance %

23.35

46.09

65.65

74.07

80.05

PLL

3.33

0.66

7.81

0.34

2.64

SDI

0.18

4E-04

0.52

3.99

11.79

PHT

2.01

2.806

14.14

0.01

5.04

NIN

1.32

1.04

9.79

5.98

14.75

PAL

7.38

0.01

6.38

0.19

13.11

PAW

0.65

2.85

7.22

0.69

6.33

NFW

8.39

6.99

1.84

0.32

4.37

HGW

1.13

7.07

0.45

1.68

0.08

STG

0.47

2.356

0.23

42.42

0.03

PYI

3.02

10.39

5.31

1.75

0.11

PWT

3.018

10.39

5.31

1.75

0.11

PLW

2.68

9.23

3.54

2.29

1.41

PSL

6.83

1.96

4.27

1.00

2.94

INL

4.08

2.84

9.44

1.12

3.65

PDL

14.57

0.28

0.58

1.17

7.49

NLG

1.64

1.34

2.12

31.15

4.08

NBT

7.45

8.78

0.08

0.61

5.02

NFL

8.00

7.68

1.40

0.30

5.14

NHD

7.96

6.88

2.57

0.61

5.02

PGW

2.23

10.41

5.68

2.34

0.05

  1. PLL: perultimate length leaf; SDI: stem diameter; PHT: plant height; NIN: number of internodes; PAL: panicle length; PAW: panicle width; NFW: Number of days to flowering; HGW: 100 grain weight; STG: staygreen; PYI: potential yield; PWT: weight of the main panicle; PLW: perultimate leaf width; PSL: perultimate leaf sheath length; INL: internodes length; PDL: peduncle length; NGL: number of green leaves at maturity; NBT: number of days to booting; NFL: number of days to appearance of flag leaf; NHD: number of days to heading; PGW: weight of the grains of the main panicle.
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