Eliminating the Endophytic Fungi in Achnatherum sibiricum by Propiconazole
Some grasses could bring the grazers toxicity syndromes due to alkaloids produced by the endophytes,attracting much attention.In the Inner Mongolia steppe,Achnatherum sibiricum (Linn.) Keng was found harboring endophytes at a high rate.It was reported that the grasses in Achnatherum genus with endophytes could cause "summer syndrome" and "staggers disease" to the grazers,so A.sibiricum with endophytes may also have toxicity at potential risks.Therefore,in this study,an effective fungicide,Propiconazole (Prop.),was chosento treat the A.sibiricum on the seed,seedling and adult plant levels.The results showed that at the concentration of 4.00 a.i.μL/g seed,Prop.can significantly reduce the vitality of the endophytes in seeds after being dipped for 4 h.When sprayed on the leaves at 4.00～6.00 a.i.g/L,Prop.can most effectively eliminate the fungi out of 7 days old seedlings and adult ramet with a high survival rate.
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