关键词: 朱红硫磺菌, 无机盐, 维生素, 植物生长调节剂

Abstract: [Objective] In order to investigate the effects of inorganic salts, vitamins and phytohomones on the growth of Laetiporus sulphureus. [Method] Laetiporus sulphureus strain LS-1 was used as testing material and the mycelial growth was measured as index. Inorganic salts, vitamins and phytohomones were measured to obtain the effect of the mycelial growth on Laetiporus sulphureus. [Results] For different inorganic salts, magnesium sulphate, potassium dihydrogen phosphate, sodium chloride, potassium chloride can promote mycelial growth of Laetiporus sulphureus, however, mycelial growth was inhibited by calcium chloride. When magnesium sulfate and monopotassium phosphate were 1.0 g/L, the mycelial growth reached maximal value(2.536 mm/d and 2.464 mm/d). Different types of vitamins VB2, VB4, VB6 had powerful enhancement on the mycelial growth of Laetiporus sulphureus. The mycelial growth reach a peak value result revealed as the concentration of VB4 was 10 mg/L. For different types of phytohomones, 6-KT can remarkably promote the mycelial growth of Laetiporus sulphureus followed by 6-BA. However, IAA and NAA had inhibition on the mycelial growth of Laetiporus sulphureus. [Conclusion] The results showed that different concentration of inorganic salts, vitamins and phytoho-mones had a great effect on the growth of Laetiporus sulphureus.

Key words: Laetiporus sulphureus, inorganic salts, vitamins, phytohomones