Chin J Plan Ecolo ›› 2011, Vol. 35 ›› Issue (3): 322-329.doi: 10.3724/SP.J.1258.2011.00322

• Research Articles • Previous Articles     Next Articles

Threshold effects of photosynthetic and physiological parameters in Prunus sibirica to soil moisture and light intensity

XIA Jiang-Bao1, ZHANG Guang-Can2*, SUN Jing-Kuan1, LIU Xia2   

  1. 1Shandong Provincial Key Laboratory of Eco-Environmental Science for Yellow River Delta, Binzhou University, Binzhou, Shandong 256603, China;

    2College of Forestry, Shandong Agricultural University, Shandong Provincial Key Laboratory of Soil Erosion and Ecological Restoration, Taian, Shandong271018, China
  • Received:2010-06-23 Revised:2010-11-24 Online:2011-03-02 Published:2011-03-01
  • Contact: ZHANG Guang-Can E-mail:zhgc@sdau.edu.cn

Abstract:

Aims Our objective was to investigate the threshold effects of photosynthetically active radiation (PAR) and soil mass water content (Wm) on photosynthetic and physiological parameters of Prunus sibirica, and understand the adaptability of P. sibirica to light and soil moisture conditions. We determined optimal Wm and PAR for P. sibirica to maintain higher net photosynthetic rate (Pn) and water use efficiency (WUE). Methods Using CIRAS-2 portable photosynthesis system, we measured Pn, transpiration rate (Tr), WUE and other photosynthetic and physiological parameters of three-year-old P. sibirica under different soil moisture conditions. Important findings Pn, Tr and WUE of P. sibirica had the critical response to soil moisture content and PAR. With increases in Wm (6.5%–18.6%), the light compensation point decreased and light saturation point, apparent quantum yield and maximum Pn increased. When Wm was about 18.6%, the low and high light use efficiency of P. sibirica was maximal. The index of Pn, Tr obviously increased with increasing Wm (9.2% to 18.6%), but Pn, Tr decreased when Wm was too high or low. When PAR ranged from 800 to 1 200 μmol·m–2·s–1, Pn and WUE were higher and the light saturation points of Pn and WUE were from 983 to 1 365 μmol·m–2·s–1. These indicated that P. sibirica possessed higher adaptability to light conditions. Based on photosynthetic and physiological parameters, the soil water availability and productivity of P. sibirica were classified and evaluated. For P. sibirica woodland, < 9.2% or >22.3% were low productivity and middle WUE, 20.5%–22.3% was middle productivity and low WUE, 9.2%–12.9% of Wm was middle productivity and middle WUE and 12.9%–20.5% of Wm was high productivity and high WUE. The optimum high productivity and high WUE of Wm were about 18.6%, and the corresponding optimum PAR was about 1 365 μmol·m–2·s–1.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] Xiling Dai;Jianguo Cao;Quanxi Wang* . Formation and Development of Sporoderm of Ceratopteris thalictroides (L.) Brongn. (Parkeriaceae)[J]. Chin Bull Bot, 2008, 25(01): 72 -79 .
[2] Liu De-li. Heat-Shock Proteins of Plants and their Functions[J]. Chin Bull Bot, 1996, 13(01): 14 -19 .
[3] Chengqiang Ding, Dan Ma, Shaohua Wang, Yanfeng Ding. Optimization Process and Method of 2-D Electrophoresis for Rice Proteomics[J]. Chin Bull Bot, 2011, 46(1): 67 -73 .
[4] Xing Xue-rong Lu Chun-sheng Guo Da-li. Effect of Oraganic Acid to Nitrate Reductase and Nitrite Reductase Activity in the Vegetables[J]. Chin Bull Bot, 1995, 12(专辑2): 156 -162 .
[5] SONG Ke-Min. Phosphorus Nutrition of Plants: Phosphate Transport Systems and their Regulation[J]. Chin Bull Bot, 1999, 16(03): 251 -256 .
[6] CHEN Fa-Ju;YANG Ying-Gen;ZHAO De-Xiu;GUI Yao-Lin and GUO Zhong-Chen. Advances in Studies of Species Habitats Distribution and Chemical Composition of Snow Lotuses(Saussurea) in China[J]. Chin Bull Bot, 1999, 16(05): 561 -566 .
[7] YANG Hong-QiangJIE Yu-lingLI Jun. The Stresses Messenger from Roots and Its Production and Transport in Plant[J]. Chin Bull Bot, 2002, 19(01): 56 -62 .
[8] Xianwei Zhang;Li Yang;Tao Zhang;Kaifeng Jiang;Guixue Wang;Jiakui Zheng;*;Xianlin Ni;Cui Tian;Yingjiang Cao. QTL Mapping for Zinc Content in Rice Grains[J]. Chin Bull Bot, 2009, 44(05): 594 -600 .
[9] Hui Li, Guangcan Zhang, Huicheng Xie, Jingwei Xu, Chuanrong Li, Juwen Sun. The Effect of Phenol Concentration on Photosynthetic Physiological Parameters of Salix babylonica[J]. Chin Bull Bot, 2016, 51(1): 31 -39 .
[10] . [J]. Chin Bull Bot, 1996, 13(专辑): 97 -98 .