The effects of Mn2+-Fe2+ combined stress on physiological indexes of Rivina humilis was studied by the method of nutrient solution culture. The results showed that both the chlorophyll content and the soluble sugar content were significantly higher than those of the control and reached the maximum when R. humilis were stressed by 6 mmol/L Mn2+ and 0.5 mmol/L Fe2+. At the same time, the MDA content was extremely significantly lower than that of the control and got to the minimum. Additionally, the combined treatment of Mn2+-Fe2+ also improved the activities of SOD, POD and CAT. In a word, the suitable combined concentrations of Mn2+ and Fe2+could alleviate the toxicity of single metal to some extent, and enhanced the tolerance of R. humilis to the ferromanganese stress.
LIN Xiao-qing
,
LI Feng-yu
,
WENG Yan-xia
. Effects of Mn2+-Fe2+ Combined Stress on Physiological Indexes of Rivina humilis[J]. Subtropical Plant Science, 2012
, 41(03)
: 33
-37
.
DOI: 10.3969/j.issn.1009-7791.2012.03.008
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