Resistance evaluation of soybean germplasms to soybean cyst nematodes Space-Time Dynamics of Heterodera glycines in Soybean Roots Construction of A Soybean Genetic Linkage Map and Mapping QTLs Resistant to Soybean Cyst Nematode (Heterodera glycines Ichinohe) Diversity and nematicidal activity of the endophytic bacteria in the wild soybean Glycine soja The population dynamics and generation occurring characteristics of tobacco-infecting cyst nematode in Shandong Province