Figure 7.

Effect of temperature on strawberry fruit development and ripening. A, Photographs showing the progression of strawberry fruit development and ripening under two different temperatures. Strawberry plants were first grown under normal temperature conditions (i.e. 25°C/18°C, day/night) until fruit setting and then were subjected to one of two different temperature conditions (i.e. 32°C/20°C or 20°C/12°C, day/night), with other conditions left unchanged. Successive photographs show the developmental progression of a representative fruit, with the numbers indicating the duration (in days) of treatment. B, The number of fully ripened fruits was counted for a given number of plants subjected either to high-temperature (32°C/20°C) or low-temperature (20°C/12°C) treatments. The horizontal distance between the two lines represents the difference in the number of days to ripening under the two different temperature conditions.