Orobanchea egyptiaca Seeds Germination Induced by Different Soybean(Glycine max)Varieties

Methanolic extracts of rhizosphere soils and plant tissues(roots,stems and leaves)from ten soybean varieties(Beidou 18,Suinong 10,Fengdou 3,Heinong 28,Dongdou 339,Zhonghuang 13,Hefeng 55,Kenjiandou 35,Heinong 44 and Kenfeng 16)were collected to research their allelopathic potential on stimulating O.aegyptiaca seeds germination at different growth stages(V1,V3,V5,R2 and R4)under pot experimental condition.The results displayed that there was a significant difference among soybean varieties on inducing O.aegyptiaca seeds germination.Rhizosphere soils of Zhonghuang 13 induced significantly higher germination rates of O.aegyptiaca than the other varieties.The soybean samples collected at V3 and V5 induced higher germination than the other stages.Seeds germination rates induced by methanolic extracts of roots were higher than that of stems and leaves.In conclusion,soybean could be used as a trap crop for O.aegyptiaca in the infected field.