|Table of Contents|

Comparison of Two Kinds of Tree Shape on Photosynthetic Fluorescence  Characteristics of Walnut(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年09
Page:
9-13
Research Field:
Publishing date:

Info

Title:
Comparison of Two Kinds of Tree Shape on Photosynthetic Fluorescence  Characteristics of Walnut
Author(s):
GAO Shan1MENG Xiao12LUO Lixin3WANG Hongwei3QIN Jiangnan1ZHANG Rui24
(1.College of Plant Science and Technology,Tarim University,Alar,Xinjiang 843300;2.Xinjiang Production & Construction Corps Key Laboratory of Protection and Utilization of Biological in Tarim Basin,Tarim University,Alar,Xinjiang 843300;3.Agricultural and Animal Husbandry Regimental Farm 3 of Agricultural Production Division 1 of Xinjiang Production and Construction Corps,Alar,Xinjiang 843300;4.College of Life Science,Tarim University,Alar,Xinjiang 843300)
Keywords:
walnuttrunk shapeopen centre modelphotosynthetic fluorescence characteristics
PACS:
-
DOI:
10.11937/bfyy.201709002
Abstract:
The photosynthetic and fluorescence characteristics of two kinds of tree shape of walnut were compared with the 4-year-old ‘Wen 185’ walnut as the test material.The results showed that,the two kinds of tree walnut that diurnal variation of net photosynthetic rate (Pn),transpiration rate (Tr) and stomatal conductance (Gs) were 〖JP4〗asymmetrical ‘bimodal curve’,the net photosynthetic rate (Pn) diurnal variation of peak appeared at around 10:00 and 16:00,and the first peak than the second peak were high 61.29%,51.75%,and the maximum net photosynthetic rate were the main stem form 15.22 μmol?m-2?s-1,open centre model 14.39 μmol?m-2?s-1,14:00 appeared obvious ‘noon break’ phenomenon.The diurnal variation of intercellular CO2 concentration (Ci) showed a trend of increasing with the decrease of net photosynthetic rate.The initial fluorescence (Fo) and the fluorescence quenching coefficient (qP) of the two kinds of walnut were significantly correlated with the fluorescence quenching coefficient.

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Last Update: 2017-05-11