Effects of Light Intensity on Photosynthetic Characteristics and Quality of Taraxacum mongolicum

ACTA HORTICULTURAE SINICA ›› 2007, Vol. 34 ›› Issue (6): 1555-1558.

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Effects of Light Intensity on Photosynthetic Characteristics and Quality of Taraxacum mongolicum

ZHAO Lei, YANG Yan-jie, and LIN Duo^*

(Horticultural College, Qingdao Agriculture University, Qingdao, Shandong 266109, China)

Received:2007-04-12 Revised:2007-06-16 Online:2007-12-25 Published:2007-12-25

Abstract

Abstract: Under different light intensity, chlorophyll content, net photosynthetic rate, and quality of Taraxacum mongolicum were studied. The results indicated that with the decrease of light intensity, photosynthetic midday-depress was weakened, contents of crude-fibre and chlorogenic acid were reduced, while contents of chlorophyll and nitrate were increased. Under the 75% natural light intensity (910 μmol·m^-2·s^-1), the Pn, contents of soluble protein, soluble sugar and vitamin C were the highest among the four treatments; the chlorogenic acid content was higher, contents of nitrate and crude-fibre were lower than the others. When the light intensity for cultivating Taraxacum mongolicum was 910 μmol·m-2·s-1, its photosynthetic efficiency and quality could be improved.

Key words: Taraxacum mongolicum, Light intensity, Photosynthetic characteristics, Quality

CLC Number:

S 63
S 647

ZHAO Lei;YANG Yan-jie;and LIN Duo. Effects of Light Intensity on Photosynthetic Characteristics and Quality of Taraxacum mongolicum[J]. ACTA HORTICULTURAE SINICA, 2007, 34(6): 1555-1558.

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Effects of Light Intensity on Photosynthetic Characteristics and Quality of Taraxacum mongolicum

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