[Effects of Mn, Fe, Zn and Cu on growth and paeoniflorin content of Paeonia lactiflora].

OBJECTIVE

To study the effects of four trace elements Mn, Fe, Zn and Cu on growth of the 2nd- and the 3rd-years Paeonia lactiflora.

METHOD

The experiment was designed as randomized blocks. The data of physiological parameters such as fresh weight of root, numbers of bud and root division, length and diameter of the root and the contents of paeoniflorin in root were measured after fertilized with the four trace elements. Also the contents of the four trace elements in soil and roots, stem and leaves of P. lactiflora were detected by atomic absorption spectrometry.

RESULT AND CONCLUSION

The growth of the P. lactiflora was improved and the content of paeoniflorin was increased by proper level of Mn, Fe, Zn and Cu, but depressed by the higher level. Only Zn can be accumulated in the roots of P. lactiflora.