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ACTA HORTICULTURAE SINICA ›› 2003, Vol. 30 ›› Issue (5): 568-570.

• 研究报告 • Previous Articles     Next Articles

Some Photosynthetic Characteristics of Blooming Grape in Protected Cultivation

Liu Tingsong ;Li Guifen   

  1. ( Shandong Vine and Wine-making Institute , Ji'nan 250100 , China)
  • Received:2003-01-10 Revised:2003-05-07 Online:2003-10-25 Published:2003-10-25

Abstract: The research on the daily variation of Pn of blooming grape was conducted in protected cultivation.Meanwhile , the effects of the main ecological factors such as PAR and CO2 concentration on Pn were studied. The results showed that the daily variation of the Pn appeared to be a marked double-peak curve in the sunny day. The daily variation of Pn of grape was chiefly decided by the daily variation of PAR in the cloudy day. The Pn in the sunny day was markedly higher than that of in the cloudy day. The response curve of Pn to PAR showed that the light saturation point was 1000μmol·m-2·s -1 and the light compensation point was 21.3μmol·m-2·s -1 . The response curve of Pn to CO2 concentration showed that the CO2 saturation point was about 1700μL·L - 1and the CO2 compensation point was 54.6μL·L - 1 .

Key words: Grape, Protected cultivation, Photosynthesis

CLC Number: