›› 2018, Vol. 30 ›› Issue (11): 1879-1885.DOI: 10.3969/j.issn.1004-1524.2018.11.10

• Horticultural Science • Previous Articles     Next Articles

Effect of different combinations of red and blue light on seedling growth and photosynthesis of Cucumis sativus

WANG Hong, WANG Ying, YAN Jun, ZHU Weimin*   

  1. Institute of Horticulture, Shanghai Academy of Agricultural Sciences, Shanghai Key Laboratory of Protected Horticultural Technology, Shanghai 201403, China
  • Received:2018-08-03 Online:2018-11-25 Published:2018-12-21

Abstract: The objective of the present study was to evaluate morphological and photosynthetic characteristics of cucumber (cv. Chunqiuwang) seedlings under different blue and red ratios of light emitting diodes (LEDs). The results showed that, except 5% blue light treatment, the fresh and dry weight, leaf area, stem diameter and plant height were significantly decreased with the increase of blue light ratio. On the contrary, SPAD value was increased with the increase of blue light ratio. The Pn of cucumber were increased with the increase of blue light ratio until 60% blue light treatment and then decreased. Gs of cucumber were increased with the increase of blue light ratio. Furthermore, the transcriptional levels of rbc L, rbc S and rca were up-regulated by blue light. In conclusion, the optimal blue/red ratio for cucumber growth was 10/90.

Key words: red and blue light, Cucumis sativus, growth, photosynthetic characteristics

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