There is no direct connection between the Seed and anything in Earthdawn. What it refers to is the rise of Resonance sensitivity "the Seed of Knowledge" caused by the magical storage of information at the end of the last high mana cycle. In addition to the reference in Neo-A-Streetpedia, the Seed is mentioned in Third Parallel (pages 78-79), Hack and Slash (pages 134 and 155) and it's explored a little more in last chapter of Astral Ways (there will also be some information about it in Falling Point). You can also research UnITy, Nous, and the Noosphere.