Effects of different cadmium concentrations on growth of tea plant and physiological index in leaves of Mengshan tea were studied with the tea cultured in pots. Results showed that, low concentration of cadmium has no obvious adverse effect on the tea plant. When the cadmium concentration reached 60 mg/kg,the tea plant harmed to die; The chlorophyⅡ(ChⅠ) content of most spring tea supplemented with Cd was higher than CK and the increasing trend was raised firstly and inhibited later. The chlorophyⅡ content of summer tea supplemented with Cd was significantly decreased with increase of cadmium concentration, and the chlorophyⅡ content showed a negative relationship with the cadmium concentration, and the coefficient of correlation was -0.997**. The malondialdehyde (MDA) content in spring and summer tea was significantly enhanced with the increase of cadmium concentration. The coefficient of correlation were 0.970**,0.994**（P<0.01）respectively. The free proline of spring tea was significantly enhanced wiyh the increase of Cd concentration, the coefficient of correlation was 0.829*（P<0.05）, the free proline in summer tea was significantly enhanced, and the coefficient of correlation was 0.980**（P<0.01）,and the content of free praline in summer tea was higher than that in spring tea. The soluble sugar content in spring tea supplemented with Cd was higher than CK and the increasing trend raised firstly and then inhibited, the coefficient of correlation was -0.342;The soluble sugar content of summer tea supplemented with Cd was significantly decreased and the coefficient of correlation was -0.909*（P<0.05）.
XIA Jian-guo
,
LAN Hai-xia
. Effects of Cadmium Stress on Growth of Tea Plant and Physiological Index in Leaves of Mengshan Tea[J]. Journal of Tea Science, 2008
, 28(1)
: 56
-61
.
DOI: 10.13305/j.cnki.jts.2008.01.011
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