Table 4: Effect of increasing temperature on physical and chemical properties of strawberry fruit.

 

Temperature

Reported features

Reference

15 °C and 19 °C

Decreased fruit size by 29% of FW and 33% of DW at 19 °C compared. to 15 °C due to lower dry matter accumulation attributed to increased photorespiration and higher fruit transpiration.

Miura, et al. [46]

Day/night: 18/12, 25/12, 25/22, and 30/22 (°C)

Greater pigment intensity resulted in darker and redder fruit due to increased anthocyanin content; Chroma color values increased by 39%.

Decreased fruit quality. Soluble solids content (SSC) decreased by 36%, titratable acidity (TA) by 14%, SS/TA ratio by 25%, and AA by 41%.

18/12 °C was the best temperature for fruit growth with higher fructose (~390 mg/DW of fruit), glucose (~350 mg/DW of fruit), and total carbohydrates (~770 mg/DW of fruit).

Reduced fruit quality with smaller and irregularly shaped fruits.

Decreased organic acid content by 18% (mainly citric acid) and ellagic acid by 15%.

Wang and Camp [45]

Day/night: 18/12, 25/12, 25/22, and 30/22 (°C)

Significantly increased phenolic acid, flavonol, and anthocyanin content.

Increased antioxidant capacity by nearly 54%.

Wang and Zheng [50]

25, 30, 35, 40 and 45 (°C)

Largest increase in peroxidase activity from 3 to 35 µmol/g min DW with gradual increase in temperature (GHS).

Smaller increase in peroxidase activity in response to sudden temperature increase (SHS) of 3 to 19 µmol/g min DW.

Decreased cellular protein by 51% under GHS and by 67% under SHS.

Gulen H and Eris [52]