Red light applied for a few minutes during the day enhanced lycopene formation in detached tomato fruits.

light · quality: phytochemicals · Solanum lycopersicum (tomato)Results differ

46 papers in the same direction as this claim · 8 in the opposite direction · 1 reporting no difference from an alternative

1. negative
   Far-red light reversed the red-light-induced lycopene accumulation.

   Fruit-Localized Phytochromes Regulate Lycopene Accumulation Independently of Ethylene Production in Tomato · 2000 · compared with red-light-induced

   Opposite directionCites this paper

2. positive
   A 24 hour ripening photoperiod increased lycopene relative to 8 hours.

   Relationship of fruit color and light exposure to lycopene content and antioxidant properties of tomato · 2003 · compared with 8 h

   Same directionCites this paper

3. no effect
   LED supplemental lighting did not affect tomato sugar or ascorbic acid content.

   Effects of Supplemental Lighting with Light-Emitting Diodes (LEDs) on Tomato Yield and Quality of Single-Truss Tomato Plants Grown at High Planting Density · 2012

   Opposite direction

4. no effect
   Constraining PPFD had no observed effect on fruit total dry matter, sugars or lycopene concentrations.

   The Effect of Constraining the Intensity of Solar Radiation on the Photosynthesis, Growth, Yield and Product Quality of Tomato · 2013

   Opposite direction

5. no effect
   White light had little or no detectable effect on flavonoid levels through 3 hours.

   Inhibition of hypocotyl elongation by ultraviolet‐B radiation in de‐etiolating tomato seedlings. II. Time‐course, comparison with flavonoid responses and adaptive significance · 1995

   Opposite direction

6. no effect
   Supplemental lighting did not affect tomato fruit ascorbic acid content, fruit count or shoot weight.

   Effects of Supplemental Lighting within the Canopy at Different Developing Stages on Tomato Yield and Quality of Single-Truss Tomato Plants Grown at High Density · 2012

   Opposite direction

7. negative
   Light decreased lycopene by 2%.

   Stability of Lycopene inside and outside the Flesh Cell, in Tomato Juice · 1971

   Opposite direction

8. negative
   Light, heat, strong acid, Fe3+ and Cu2+ degraded lycopene.

   Effects of Physical and Chemical Factors on Lycopene · 2011

   Opposite direction

47 papers more in this group