Photosynthesis, respiration, and carbohydrate transport, partitioning and storage - Biology of Apples and Pears - page 251

1500

100

75

1000

50

25

500

0

− 25

0

0000 0400 0800 1200 1600 2000 2400

Time (h)

Figure 8.7 Diurnal patterns of whole canopy carbon exchange of 4
cropping 'Braeburn' apple trees c . 25 weeks after full bloom. The
shaded area represents photosynthetic photon flux. From W unsche
and Palmer (1997a). Reproduced with permission.

4

3

2

1

0

1

−

July Sept
1988

Nov Jan Mar May July Sept Nov Jan Mar

1989 1990

Figure 8.8 Seasonal course of net photosynthesis in the light and
dark respiration of 'Golden Delicious' apple trees at Bonn,Germany.
Values based on weekly 48-h measurements. From Wibbe et al.
(1993). Reproduced with permission.