|Table of Contents|

Relationship Between Diurnal Changes of Net Photosynthetic Rate and  Environmental Factors in Leaves of ‘Luguang’Juglans regia L.(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年11期
Page:
32-34
Research Field:
Publishing date:

Info

Title:
Relationship Between Diurnal Changes of Net Photosynthetic Rate and  Environmental Factors in Leaves of ‘Luguang’Juglans regia L.
Author(s):
 YANG Yu-hua1; ZONG Jian-wei1; 2; 3; YUE Han-qiu1; LIANG Ya-hong1; YANG Feng-ling1
1.Pingdingshan University,Key Laboratory Ecological Restoration Hilly,College of Natural Resources and Environment Sciences,Pingdingshan,Henan 467000;
2.College of Forestry,Northwest Agricultural and Forestry University,Yangling,Shannxi 712100;
3.Institute of Forestry,Chinese Academy of Forestry,Beijing 100091
Keywords:
Juglans regia L.; net photosynthetic rate; air relative humidity; air temperature; air CO2 concentration
PACS:
S 664.1
DOI:
-
Abstract:
Taking annual grafting of‘Luguang’Juglans regia as material,diurnal changes of photosynthetic characteristics and environmental factors of were studied by Li-6400 portable photosynthesis system,in order to provide scientific basis for the excellent varieties selecting and high production of walnut seedling.The results showed that,the diurnal changes of the net photosynthetic rate （Pn）showed double peak curve at 10:00 and 16:00 respectively and the first peak was higher than the second peak,midday depression phenomenon occurred at 14:00 obviously;there were negative correlations between the net photosynthetic rate （Pn）and air temperature,however,there were quadratic curve correlations between the net photosynthetic rate （Pn）and air CO2 concentration,air relative humidity.Therefore,the diurnal changes of the net photosynthetic rate （Pn）were mainly caused by air relative humidity,air temperature and air CO2 concentration.

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Last Update: 2014-08-04