Table 1 Concentrations (nmol g⁻¹ DW) of soluble sugars, sugar alcohols, starch, and total non-structural carbohydrates (TNCs) in the roots and leaves of P. simonii treated at either ambient (A) or high (H) temperatures combined with one of two watering regimes (well-watered (W) or drought (D).

AW

6.9 ± 1.5 a

11.0 ± 0.9 b

45.9 ± 1.4 c

153.6 ± 13.7 a

134.5 ± 10.7 a

93.6 ± 10.4 b

265.2 ± 12.0 a

AD

11.3 ± 2.5 a

5.9 ± 2.3 ab

10.3 ± 4.5 b

253.6 ± 65.3 a

345.2 ± 38.1 b

59.7 ± 10.5 a

330.9 ± 75.7 a

HW

9.2 ± 1.3 a

1.0 ± 0.0 a

0.8 ± 0.1 a

221.8 ± 28.7 a

175.7 ± 1.7 a

82.2 ± 3.0 ab

314.3 ± 31.2 a

HD

23.7 ± 1.4 b

32.6 ± 2.4 c

1.4 ± 0.2 a

562.2 ± 22.2 b

424.2 ± 49.3 b

71.4 ± 5.2 ab

690.3 ± 21.4 b

AW

1.4 ± 0.1 a

3.7 ± 0.7 a

11.7 ± 0.8 a

51.4 ± 3.7 a

21.1 ± 0.8 a

30.9 ± 2.5 a

87.4 ± 6.0 a

AD

1.5 ± 0.1 a

4.8 ± 0.1 a

16.3 ± 0.5 b

56.4 ± 5.8 a

25.3 ± 1.6 a

49.4 ± 2.2 b

112.1 ± 5.2 b

HW

2.5 ± 0.1 b

3.2 ± 0.8 a

11.2 ± 0.9 a

63.0 ± 1.7 a

25.6 ± 1.3 a

24.4 ± 3.7 a

93.1 ± 5.8 a

HD

2.6 ± 0.3 b

7.7 ± 0.6 b

20.2 ± 1.3 c

94.0 ± 2.0 b

23.8 ± 2.4 a

44.5 ± 1.7 b

148.8 ± 0.2 c

T

**

**

****

**

ns

ns

**

D

***

***

***

***

***

*

***

T × D

*

****

***

*

ns

ns

**

T

***

*

ns

***

ns

ns

**

D

ns

**

***

**

ns

***

****

T × D

ns

*

*

**

ns

ns

*