EFFECTS OF NaCl AND Na2CO3 STRESSES ON PHOTOSYNTHESIS AND PARAMETERS OF CHLOROPHYLL FLUORESCENCE IN HELIANTHUS TUBEROSUS SEEDLINGS
XUE Yan-Feng, LIU Zhao-Pu
Chin J Plant Ecol . 2008, (1): 161 -167 .  DOI: 10.3773/j.issn.1005-264x.2008.01.018