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2007•Acta Agrestia SinicaRequires access

Physiological Responses of Four Cold-Season Turfgrass Cultivars Under Drought Stress

Xinli Xia

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Abstract

The study was designed for four turfgrass cultivars: Baron,Bonsai 2000,Park,and AridⅢ.Under drought stress,the experiment was conducted to determine the grasses' content of free water,of bound water,and of relative water(RWC),relative electrical conductivity,net photosynthesis(Pn),transpiration rate(Tr),and intercellular CO2 concentration(Ci). The result indicates that different physiological indices show different extent of increases and decreases and the order of drought resistance of the four turfgrass cultivars from high to low is Baron,Bonsai2000,Park,and AridⅢ.

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What this paper is about

The study was designed for four turfgrass cultivars: Baron,Bonsai 2000,Park,and AridⅢ.Under drought stress,the experiment was conducted to determine the grasses' content of free water,of bound water,and of relative water(RWC),relative electrical conductivity,net photosynthesis(Pn),transpiration rate(Tr),and intercellular CO2 concentration(Ci). The result indicates that different physiological indices show different extent of increases and decreases and the order of drought resistance of the four turfgrass cultivars from high to low is Baron,Bonsai2000,Park,and AridⅢ.

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Available abstract

The study was designed for four turfgrass cultivars: Baron,Bonsai 2000,Park,and AridⅢ.Under drought stress,the experiment was conducted to determine the grasses' content of free water,of bound water,and of relative water(RWC),relative electrical conductivity,net photosynthesis(Pn),transpiration rate(Tr),and intercellular CO2 concentration(Ci). The result indicates that different physiological indices show different extent of increases and decreases and the order of drought resistance of the four turfgrass cultivars from high to low is Baron,Bonsai2000,Park,and AridⅢ.

Key concepts: Cultivar, Transpiration, Arid, Photosynthesis, Drought stress, Drought resistance, Water stress, Relative humidity

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