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ACTA HORTICULTURAE SINICA ›› 2007, Vol. 34 ›› Issue (1): 67-70.

• 果树 • Previous Articles     Next Articles

Response of Photosynthesis to Some Env ironmental Factors of High-bushBlueberry Cultivars

SUN Shan1,2; LI Peng-min1; LIU Qing-zhong2; GAO Hui-yuan1*   

  1. (1 College of Life Science, Shandong Agricultural University, Taipan, Shandong 271018, China; 2 Shandong Institute of Pomology, Taipan, Shandong 271000, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-02-25 Published:2007-02-25

Abstract: The photosynthetic induction and response of photosynthesis to environmental factors were
investigated in 4 high-bush blueberry cultivars. The results showed that the time of photosynthetic induction
was quite long ( 46 - 75 min) , the photosynthetic induction was the fastest in Reveille, whereas it was the
slowest in Sunrise. The CO2 compensation points were rather high ( 89 - 121 μmol ·mol-1 ) in the 4
cultivars, indicating that all of the 4 cultivars are typ ical C3 p lants. Compared to southern high2bush blueber
ries, the northern high2bush blueberries Sunrise and Jersey had higher photosynthetic ability, carboxylation
efficiency, the maximal photochemical efficiency of PS Ⅱ and saturation light intensity. In addition, the
Sunrise had the lowest light compensation point and characteristics of shade tolerant p lant. However, the
op timum photosynthetic temperature was lower and the range of itwas narrower (23 - 25℃) , indicating that
these cultivars were not suitable to grow in southern region with high temperature. The southern high-bush
blueberries Reveille, as compared with northern high2bush blueberries, had a wider range (23 - 35℃) of op
timum photosynthetic temperature, which extended its range of introduction and cultivation.

Key words: Blueberry, Photosynthesis, Photosynthetic induction, Apparent quantum yield, Carboxylation efficiency