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Table 2 Analysis of variance (ANOVA) results from proc MIXED analysis with SAS for genotype treatment, days after treatment (DAT) and the two-way interactions between them for chlorophyll a (Chl a), chlorophyll b (Chl b) and total chlorophyll (Chl a + b)

From: Chlorophyll fluorescence imaging captures photochemical efficiency of grain sorghum (Sorghum bicolor) in a field setting

Chl a

Effect

DF

F value

Pr > F

 Genotype

1

13.36

0.0005

 Treatment

2

18.81

 < .0001

 DAT

3

7.15

0.0003

 Genotype×Treatment

2

6.12

0.0034

 Genotype×DAT

3

0.27

0.8477

 Treatment×DAT

6

0.24

0.9613

Chl b

Effect

DF

F value

Pr > F

 Genotype

1

18.01

 < .0001

 Treatment

2

10.74

 < .0001

 DAT

3

1.93

0.1327

 Genotype×Treatment

2

2.80

0.0673

 Genotype×DAT

3

0.11

0.9565

 Treatment×DAT

6

0.09

0.9972

Chl a + b

Effect

DF

F value

Pr > F

 Genotype

1

14.42

0.0003

 Treatment

2

18.08

 < .0001

 DAT

3

6.26

0.0008

 Genotype×Treatment

2

5.75

0.0047

 Genotype×DAT

3

0.25

0.8621

 Treatment×DAT

6

0.22

0.9688