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Effects of Different Light Qualities on Growth and Photosynthetic Characteristics of Pakchoi(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2013年22期
Page:
1-4
Research Field:
Publishing date:

Info

Title:
Effects of Different Light Qualities on Growth and Photosynthetic Characteristics of Pakchoi
Author(s):
CHEN Xiang-weiLIU Shi-qiLIU QingCHENG BoFENG LeiLIU Jing-kai
State Key Laboratory of Crop Biology,Agriculture Ministry Key Laboratory of Horticultural Crop Biology,College of Horticulture Science and Engineering,Shandong Agricultural University,Tai’an,Shandong 271018
Keywords:
pakchoilight qualitygrowthchlorophyllphotosynthetic rate
PACS:
S 634.3
DOI:
-
Abstract:
Taking ‘Huajing’ pakchoi as material,red light,blue light,red/blue(3/1)light,red/blue(7/1) and white/red/blue(3/2/1) light were applied by light-emitting diode,white light generated by fluorescent lamps was used as control,the effects of different light qualities on the growth and photosynthetic characteristics of pakchoi were studied.The results showed that the stem diameter,leaf width,leaf area and root length of pakchoi were the highest under red/blue (7/1) light.The root activity of pakchoi was the highest under red/blue (7/1) light and the smallest under blue light.The content of chlorophyll (a+b) of pakchoi was the highest under blue light treatment,and chlorophyll (a+b) content was correlated with red/blue negative correlation.The photosynthetic rate,stomata conductance,transpiration rate of pakchoi were the biggest under red light.Whereas intercellular CO2 concentration was the highest under blue light.It concluded that the photosynthetic rate of pakchoi was significantly increased under red/blue (7/1) light,thus the plant growth and yield were also significantly increased.

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Last Update: 2014-08-06