| Effects of drought stress on photosynthetic properties of grapevine |
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| DOI：10.7606/j.issn.1000-7601.2008.05.36 |
| Key Words: drought stress grapevine photosynthetic pigment photosynthesis property |
| Author Name | Affiliation | | LIU Shiqiu | College of Enology, Northwest A & F University, Yangling, Shaanxi 712100, China | | ZHANG Zhenwen | College of Enology, Northwest A & F University, Yangling, Shaanxi 712100, China | | XI Zhumei | College of Enology, Northwest A & F University, Yangling, Shaanxi 712100, China | | SONG Qian | College of Enology, Northwest A & F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| Two-year old European cultivar grapevine (Cabernet Sauvignon) was planted in the plastic pots under the glasshouse environment, to study its morphological and physiological photosynthesis and photosynthetic pigment content in different gradient drought stress. The The results show as the following: ① The drought stress can reduce significantly the plant biomass of Cabernet Sauvignon grape, and the impact on plant increases with the degree of stress; ② Along with the deepening of drought stress level, the net photosynthetic rate (Pn), conductance to H2O (Gs) and transpiration rate (Tr) were getting significantly lower, the intercellular CO2 concentration (Ci) decreased first but increased and acumulated eventually, and the grape photosynthesis capacity increased with the degree of stress and decline; ③ The content of photosynthetic pigments was also reduced with the prolonging of drought stress, while the ratio of Chl a/Chl b was comparatively stable. |
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