Title: Response Characteristics of Photosynthetic Rate to Light Intensity and CO_2 Concentration of Grape
Abstract: In order to study the management and water-saving irrigation technology for Turpan Grape,photosynthesis of grape was determined in Turpan area with CIRAS-3portable photosynthesis system.The results showed that when the photosynthetically active radiation in the range of 0~600μmol·m-2·s-1,the net photosynthetic rate increased rapidly;in 600~1 500μmol·m-2·s-1 the net photosynthetic rate;and in 1 500~2 000μmol·m-2·s-1,the net photosynthetic rate increased with the photosynthetically active radiation decreased.The concentration of CO2 before 800μmol·m-2·s-1,the photosynthetic rate increased rapidly;after800μmol·m-2·s-1,the photosynthetic rate increased slowly.Light response curve and CO2 response curve were fitted with the nonrectangular hyperbola model and the rectangular hyperbola model,the determination coefficient were 0.996 2and 0.988 5.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: article
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