光照强度对蒲公英光合特性及品质的影响

园艺学报 ›› 2007, Vol. 34 ›› Issue (6): 1555-1558.

光照强度对蒲公英光合特性及品质的影响

赵磊;杨延杰;林多^*

（青岛农业大学园艺学院，山东青岛 266109）

收稿日期:2007-04-12 修回日期:2007-06-16 出版日期:2007-12-25 发布日期:2007-12-25
通讯作者: 林多

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

摘要/Abstract

摘要： 以蒲公英为材料，研究了光照强度对其叶片叶绿素含量、净光合速率及品质的影响。结果表明：随着光照强度的降低，光合午休现象不明显，叶片中叶绿素和硝酸盐含量增加，粗纤维和绿原酸含量降低。与其他处理相比，75%平均自然光强(910 μmol·m^-2·s^-1)下叶片具有最高的净光合速率、可溶性蛋白、可溶性糖和维生素C含量，绿原酸的含量也相对较高，硝酸盐和粗纤维含量较低。生产上，在910 μmol·m^-2·s^-1的光强下进行蒲公英栽培，可提高光合效率和产品品质。

关键词: 蒲公英, 光照强度, 光合特性, 品质

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

中图分类号:

S 63
S 647

赵磊;杨延杰;林多. 光照强度对蒲公英光合特性及品质的影响[J]. 园艺学报, 2007, 34(6): 1555-1558.

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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