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The Reaction of Grape ‘Red Global’ Photosynthesis Rate on Short Term Different Level Irrigation Treatments(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年14
Page:
11-15
Research Field:
Publishing date:

Info

Title:
The Reaction of Grape ‘Red Global’ Photosynthesis Rate on Short Term Different Level Irrigation Treatments
Author(s):
MA Shuai1FENG Jinchao1REN Lantian1LI Zhengzhen1LI Yuxian1ZHAO Huiqing2FENG Yalei1
(1.College of Life and Environment Science,Minzu University of China,Beijing 100081;2.Traditional Chinese Medical Hospital of Qingzhou City,Qingzhou,Shandong 262500)
Keywords:
‘Red Global’ grapewater potentialwater use efficiencychlorophyll fluorescencechlorophyll content
PACS:
-
DOI:
10.11937/bfyy.201514003
Abstract:
4-year-old ‘Red Global’ grapes were watered in 4 levels in a month:L1 (50±3)% maximum soil moisture capacity),L2 (60±3)% maximum soil moisture capacity),L3 (70±3)% maximum soil moisture capacity,L4 (80±3)% maximum soil moisture capacity.Water potential,diurnal variety of photosynthesis,light response curve,chlorophyll fluorescence and chlorophyll content were measured after the treatment.The results showed that,diurnal variety of net photosynthesis rate (Pn) showed a one peak curve with a significant decrease after 8:00 am of all 4 treatments.The decrease reason for L1 was non-stomatal reason,but L2,L3 and L4 were stomatal reason.The average value of Pn from L1 to L4 was 4.61 CO2 μmol?m-2?s-1,8.20 CO2 μmol?m-2?s-1,7.76 CO2 μmol?m-2?s-1 and7.60 CO2 μmol?m-2?s-1,the average value for L1 was smaller than other treatments (P<0.05).After compared maximum net photosynthesis rate by using light response curve,Pnmax showed (L2,L3)>L4>L1(P<0.05).The chlorophyll fluorescence and chlorophyll content data showed the decreasing of Pnmax in L1 and L4 was decreased of chlorophyll content and had no relationship with chlorophyll fluorescence.Above all,moderate irrigation was necessary for ‘Red Global’ to keeping high Pn.

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Last Update: 2015-08-12