Relationship Between Ultra Weak Luminescence and Photosynthetic Characteristics During Process of Drought Stress(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Relationship Between Ultra Weak Luminescence and Photosynthetic Characteristics During Process of Drought Stress

Author(s):: MENG Yafen; LI Lianguo; LIANG Shuang; LI Zhiwei; GUO Jinli; College of Agronomy,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010019

Abstract:: The aim of the study was to analyze contrastively the relationship between ultra weak luminescence and photosynthesis of ‘Cabernet Sauvignons’ and ‘Merlot’ during the process of drought stress with using water control.The results showed that during the process of drought stress,photosynthetic indexes of grape leaves had obvious changes,assimilation rate,stomatal conductance and transpiration rate showed a trend of falling with the deepening of stress,the internal CO₂ concentration increased gradually.The UWL intensity showed a trend of gradual falling with the deepening of stress.The UWL intensity and assimilation rate,stomatal conductance and transpiration rate,chlorophyll content were positively correlated,and negatively correlated with internal CO₂ concentration.The results showed that,with the deepening of drought stress,UWL intensity gradually reduced along with the weakening of photosynthesis,the correlation was obvious,so UWL was related to photosynthesis.

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Last Update: 2017-09-22