Effects of Water Stress on Photosynthetic Rate and Water Use Efficiency of Maize

doi:10.7668/hbnxb.2009.S1.037

Abstract

Abstract: The trial was based on 7 varieties of maize ,which was treated with moderate degree water stress in theflowering growth stages.The effect of water stress on photosynthetic rate ,water use efficiency,stomatal conductance andintercellular CO2 concentration was studied.The result showed that the center of photosynthesis response was controlledand the main limiting factor of the photosynthetic rate was the non -stomatal limitation ,WUE was positively related toPn ,Gs and Tr ,while Ci was in opposite way ,WUE of leaves was increased under water stress.

Key words: Waterstress, Maize, Photosyntheticrate, Wateruseefficiency

CLC Number:

S513.01

ZHANGZhen-ping, QIHua, ZHANGYue, SUNShi-xian, YANGGuo-hang. Effects of Water Stress on Photosynthetic Rate and Water Use Efficiency of Maize[J]. ACTA AGRICULTURAE BOREALI-SINICA, doi: 10.7668/hbnxb.2009.S1.037.

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http://www.hbnxb.net/EN/Y2009/V24/IS1/155

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