Table 2 Means of net photosynthetic rate (A; µmoL CO₂/m²/s), stomatal conductance to water vapor (g_s; mmoL/m²/s), transpiration rate (E; mmoL H₂O/m²/s), internal CO₂ concentration (ci; µmoL/moL) in the leaf mesophyll, potential quantum yield of photosystem II (Fv/Fm), leaf-to-air water vapor pressure deficit (Vpd_L; kPa), and efficiency of water use (A/E; [µmoL CO₂/(mmoL H₂O)]) in ripe leaves of six cacao clones grown under full sun.

A

Main cropping

6.55 A

6.04 a

8.33 a

7.21 a

4.86 b

4.81 b

6.66 a

6.32

Intercropping

6.09 A

g_s

Main cropping

0.128 A

0.104 a

0.121 a

0.118 a

0.068 b

0.082 b

0.110 a

0.100

Intercropping

0.073 B

E

Main cropping

2.64 A

1.97 a

2.30 a

2.35 a

1.64 a

1.88 a

2.02 a

2.02

Intercropping

1.41 B

Ci

Main cropping

293.06 A

270.33 a

257.90 a

272.67 a

260.31 a

274.57 a

276.50 a

268.71

Intercropping

244.37 B

Fv/Fm

Main cropping

0.780 A

0.787 a

0.781 a

0.79 a

0.779 a

0.798 a

0.781 a

0.786

Intercropping

0.793 A

Vpd_L

Main cropping

2.08 B

1.87 c

1.91 c

1.97 c

2.49 a

2.40 a

2.22 b

2.14

Intercropping

2.21 A

A/E

Main cropping

2.61 B

3.77 a

4.07 a

3.36 a

2.99 a

2.73 a

5.02 a

3.66

Intercropping

4.71 A