Treatments

Photosynthetic WUE

(µmol/m mol)

Net

Photosynthesis (µmol m² s⁻¹)

Stomatal

Conductance

(m mol m² s⁻¹)

Transpiration

(m mol m² s⁻¹)

Internal

Carbon (ppm)

Leaf

Temperature

(˚C)

Cultivars (n = 24)

Agria

2.8^b

6.8^b

71.0^bc

2.8

223.5^a

28.9

Moe Moe

4.6^a

12.5^a

113.3^ab

2.7

158.4^b

29.2

Tutaekuri

4.3^a

10.8^a

97.8^b

2.6

166.6^b

29.2

LSD_0.05

p < 0.01

p < 0.05

p < 0.05

Ns

p < 0.01

Ns

Water regimes (n = 24)

FI

4.3

12.6^a

109.3^a

2.9^ab

166.8^b

29.2

PI

3.1

10.9^a

115.4^a

3.5^a

205.5^a

29.2

Rain-Fed

3.9

6.7^b

57.2^b

1.7^b

176.8^ab

28.9

LSD_0.05

Ns

p < 0.05

p < 0.01

p < 0.05

p < 0.05

Ns

Nitrogen (kg∙ha⁻¹) (n = 36)

80

3.9

8.0^b

72.0^b

2.0

185.9

29.1

240

3.6

12.1^a

116.0^a

3.4

179.8

29.2

LSD_0.05

Ns

p < 0.05

p < 0.01

Ns

Ns

Ns