Volume 3, Issue 3, June 2015, Page: 38-42
LED Light Spectrum Affects the Photosynthetic Performance of Houttuynia Cordata Seedlings
Zhaoqing Wang, School of Life Sciences, Shanxi Normal University, Linfen, China
Jingyun Tian, School of Life Sciences, Shanxi Normal University, Linfen, China
Bo Yu, School of Life Sciences, Shanxi Normal University, Linfen, China
Liyan Yang, School of Life Sciences, Shanxi Normal University, Linfen, China
Yi Sun, Biotechnology Research Centre, Shanxi Academy of Agricultural Sciences, Taiyuan, China; Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau, Ministry of Agriculture, Taiyuan, China
Received: Jul. 21, 2015;       Accepted: Jul. 28, 2015;       Published: Aug. 11, 2015
DOI: 10.11648/j.ajop.20150303.12      View  4122      Downloads  98
Abstract
We investigated the effects of light-emitting diodes (LED) with various light spectrum (white, red, yellow, green and blue) on photosynthesis of Houttuynia cordata seedlings. The seedlings were either cultivated under florescent lamp or under various LED lights. The leaves were collected and chlorophyll fluorescence parameters, the contents of chlorophyll, soluble sugar and relative water were measured, chloroplasts were observed as well. The results showed chlorophyll fluorescence parameters as Fv/Fm, qP and qY values were the highest under blue LED light and the values were the lowest under green LED light. Red LED light resulted in the enhanced chlorophyll content compared with the other LED lights, and the chl a/chl b ratio did not change significantly among LED treatments. The soluble sugar content was not significantly different among the treatments. The red LED increased relative water content and the green LED decreased the water content. Observation of chloroplasts in the leaves of Houttuynia cordata seedlings showed chloroplast number and distribution were altered by various light spectrum where chloroplasts were smaller under blue LED, and appeared to be more scattered under red LED. Our results indicated that photosynthesis of Houttuynia cordata seedlings respond differently to various light spectrum emitted by florescent lamp and LED
Keywords
Houttuynia Cordata, LED, Photosynthesis, Light Spectrum
To cite this article
Zhaoqing Wang, Jingyun Tian, Bo Yu, Liyan Yang, Yi Sun, LED Light Spectrum Affects the Photosynthetic Performance of Houttuynia Cordata Seedlings, American Journal of Optics and Photonics. Vol. 3, No. 3, 2015, pp. 38-42. doi: 10.11648/j.ajop.20150303.12
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