| To explore the promoting effect of endophyte fungi on the host plant, 4 IAA -producing strains (strain
numbers: YS07, YS16, YS21, YS27)were obtained from 48 strains endophytic fungi of Dioscorea opposite Thunb. by
Salkowski colorimetric. Aseptic seedlings of Ruichang yam and endophytic fungi were cultured together, and the growth of
the seedlings and the endophytic fungi colonization in roots were observed. The results showed that the seedlings of
Ruichang yam had significant increases in the fresh weight of plants, number of roots, root-shoot ratio and amount of
chlorophyll which cultured with endophytic fungi. There were differences in IAA-producing and promoting effect among the
endophytic fungi, the order of promoting effect of 4 strains was YS27>YS21>YS07>YS16 |
