Effects of manganese stress on photosythesis and chlorophyll fluorescence parameters of Phytolacca americana
锰胁迫对垂序商陆光合特性及叶绿素荧光参数的影响

Phytolacca americana L.(Phytolaccaceae) is a new manganese hyper-accumulator plant from Southern China.In order to estimate the relationships among manganese tolerance of P.americana and photosynthesis and chlorophyll fluorescence parameters,chlorophyll contents,gas exchange and chlorophyll fluorescence parameters were measured by glasshouse experiments.With the manganese concentration in the media increasing,chlorophyll a,chlorophyll b and total chlorophyll contents of P.americana decreased,and net photosy...