Root zone

temp.

RGR (g∙g−1∙day−1)

Ratio of plant organ

Shoot

Tap root

Fibrous root

Shoot/Tap root

Shoot/Fibrous root

Tap root/Fibrous root

20˚C

0.134 ± 0.011 a

0.218 ± 0.011 a

0.108 ± 0.014 a

0.90 ± 0.08 b

1.12 ± 0.12 b

0.24 ± 0.04 b

25˚C

0.136 ± 0.005 a

0.200 ± 0.008 ab

0.124 ± 0.008 a

1.07 ± 0.08 ab

1.50 ± 0.17 ab

0.39 ± 0.06 ab

29˚C

0.142 ± 0.008 a

0.183 ± 0.006 bc

0.128 ± 0.007 a

1.39 ± 0.15 a

2.09 ± 0.26 a

0.49 ± 0.03 a

33˚C

0.087 ± 0.003 b

0.156 ± 0.009 c

0.059 ± 0.010 b

1.07 ± 0.09 ab

1.40 ± 0.15 ab

0.29 ± 0.06 b