Table 2 Eta-square (η2) values for the sources of variation in the leaf area index (LAI), chlorophyll content (SPAD), net photosynthetic ratio (Pn), transpiration rate (E) and instantaneous water use efficiency (WUE).

From: Modelling the growth, development and yield of Triticum durum Desf under the changes of climatic conditions in north-eastern Europe

Source of variation

LAI

SPAD

Pn

E

WUE

Years Y

2.9

23.0

32.6

2.7

2.9

Agronomic factors A

22.3

11.8

0.4

2.0

22.3

Y × A

6.6

3.3

3.2

2.7

6.6

A × A

1.3

0.5

1.0

0.5

1.3

Total Y&A

33.1

38.6

37.2

7.9

33.1

Growth stage G

21.1

15.6

7.0

45.8

21.1

Y × G

9.4

21.5

15.9

16.1

9.4

A × G

2.1

2.1

1.4

2.3

2.1

Total G

32.5

39.3

24.3

64.2

32.5

Random factors

34.4

22.1

38.5

27.9

34.4