Abstract:
To study the accumulation characteristics and physiological resistance of 5 kinds of ornamental plants (
Monstera deliciosa,
Spathiphyllum kochii,
Epipremnum pinnatum,
Philodendron ′
con-go′,
Syngonium podophyllum) toward different concentrations of Pb and Cd, it was conducted by pot experiment. The result showed that the Pb accumulation of the overground parts and roots of 5 kinds of ornamental plants in high concentration are as follows:
E.pinnatum >
M.deliciosa >
Philodendron ′
con-go′ >
S.kochii >
S.podophyllum, the order of Cd accumulation is:
M.deliciosa >
P.pinnatum >
Philodendron ′con-go′ >
S.kochii >
S.podophyllum. The soluble protein content of
M.deliciosa,
S.kochii and
E.pinnatum increased with the increasing of Pb concentration, but it decreased in
Philodendron ′
con-go′ and
S.podophyllum, besides
S.kochii, the soluble protein content decreased with the increasing of Cd concentration in the other 4 plants; with the increasing of Pb and Cd concentration, the free proline content of
M.deliciosa,
E.pinnatum,
Philodendron ′
con-go′ and
S.kochii showed a rising trend, but it increased firstly and then decreased in
S.podophyllum; the MDA content and relative conductivity of 5 kinds of ornamental plants increased under the Pb and Cd stress. The membership function analysis showed that the Pb resistance ability of 5 kinds of ornamental plants is
M.deliciosa >
Philodendron ′
con-go′ >
S.kochii e >
E.pinnatum >
S.podophyllum; the Cd resistance ability is
Philodendron ′
con-go′ >
M.deliciosa >
S.kochii >
E.pinnatum >
S.podophyllum.