Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (22): 102-108.doi: 10.11924/j.issn.1000-6850.2014-0414

Special Issue: 园艺

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Influence of Illumination Supplement Used LED Light on Photosynthesis of Tomato

  

  • Received:2014-02-24 Revised:2014-04-15 Online:2014-08-05 Published:2014-08-05

Abstract: In order to find the best spectral components for tomato growth, the effects of light-emitting diode (LED) on the photosynthetic characteristics of tomato were studied. The results showed that the daily variation of tomato photosynthesis was changed by supplementary light, with double peak of diurnal variation of tomato photosynthetic rate instead of single peak. Although LED lights could extend the time course of photosynthesis, no obvious effects were found on the intercellular CO2 concentration, stomatal conductance and transpiration rate. The effects of LED lights on the photosynthetic rate were varied with the light quality. The red and blue lights had greater photosynthetic rate than the green light, which indicated that the red and blue lights could increase tomato photosynthesis more obviously than the green light, and promote more organic matter accumulated in the tomato leaves.