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Comparison of Four Chinese Cabbage on Daily Dynamics of Photosynthesis(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年04
Page:
1-5
Research Field:
Publishing date:

Info

Title:
Comparison of Four Chinese Cabbage on Daily Dynamics of Photosynthesis
Author(s):
DU She-ni1; 2; BAI Gang-shuan1; 2
(1.Institute of Soil and Water Conservation，Northwest Agricultural and Forestry University，Yangling，Shaanxi 712100；2.Institute of Soil and Water Conservation，Chinese Academy of Sciences，Yangling，Shaanxi 712100)
Keywords:
Chinese cabbage; environment factors; photosynthesis rate; transpiration rate; stomata conductance
PACS:
-
DOI:
10.11937/bfyy.201504001
Abstract:
Taking 4 Chinese cabbage varieties of‘Jinchun No.2’,‘Jinxia No.55’,‘Jinxia No.50’,‘Jinqiu No.55’as materials，in field，the diurnal dynamics of photosynthetic rate (Pn)，transpiration rate (Tr)，and stomatal conductance (Gs)，as well as those of photosynthetic active radiation (PAR)，CO2 concentration in field(Ca)，relative humidity (RH) and air temperature (Ta) were measured using portable LI-6400 photosynthesis system.The results showed that，the curves of the diurnal variation in Pn，Tr and Gs of four Chinese cabbage varieties had two peaks except the curves of the diurnal variation in Tr of‘Jinqiu No.55’had one peak，and an obvious midday depression；there were differences in the time and the value of the peaks in Pn，Tr and Gs of four chinese cabbage；correlation analyses showed that the correlation between Pn and environment factors was less than the correlation between Tr and environment factors.

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Last Update: 2015-03-25