Effect of Light Quality on Leaf Lettuce Photosynthesis and Chlorophyll Fluorescence

Abstract

Abstract: This study discussed the effects of different light quality (white light, red light, yellow light and blue light) on Photosynthesis and chlorophyll fluorescence of leaf lettuce. The results showed that contents of Chla and Chla/Chlb value under different light qualities were obviously different; The net photosynthetic rate (Pn) and carboxylation efficiency (CE) were strongly affected by different light qualities, Pn value was highest under red light, then was yellow light, but CE value was highest under yellow light, then was red light. Values of ΦPSII, ETR ,qP, NPQ were highest under yellow light ,then the rank was red light ,and the value of Fv/Fm were highest under red light ,then the yellow light, blue light . In conclusion, yellow light was the best for the growth of leaf lettuce.

CLC Number:

S636.2

Xu Li, Liu Shi qi, Qi Lian dong, Liang Qing ling ,Yu Wen yan. Effect of Light Quality on Leaf Lettuce Photosynthesis and Chlorophyll Fluorescence[J]. Chinese Agricultural Science Bulletin, 2007, 23(1): 96-096.

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