黄芪种衣剂对黄芪根腐病菌(Fusarium oxysporum)抑制作用的研究

The Study on Astragalus Seed Coating Inhibitting Pathogen of Astragalus Root Rot (Fusarium oxysporum)

目的:以不同浓度的黄芪种衣剂和ND牌种衣剂测定其对尖孢镰刀菌(F.oxysporum)的抑制效果。方法:以5mL灭菌水代替种衣剂作为对照,把从菌落边缘打出的菌丝块移到带药的PSA培养基中,观察菌落直径。结果:同等有效浓度下,黄芪种衣剂的抑制率高,与ND大豆种衣剂相比有较好的抑菌效果。结论:黄芪种衣剂对黄芪根腐病菌--尖孢镰刀菌具有明显的抑制效果,抑菌效果好于ND大豆种衣剂。

Objective： To determine the resisting effect on Pathogen of Soybean Root Rot （F.oxysporum） by the astragalus seed coating and ND seed coating in different amount. Methods： Moving mycelium which from the edge of the colony to block outgoing hyphae with drug PSA medium ,and observing colony diameter, by the control of 5 mL germfree water. Results： In the equally effective concentration, astragalus seed coating had a bigger inhibition rate, and was slight better than ND seed coating. Conclusions： The astragalus seed coating has obvious inhibitting effect on Pathogen of soybean root rot （Fusarium oxysporum） and is slight better than ND seed coating.