The experiment was done in Shandong Agriculture University, AriCompany of Jinan and Jinqiu seed Company of Shandong from 2003 to 2005.As for the questions such as complicated process, high contanmination rate,high cost and low living rate, based on the plantiotics, a new tissue culture systemwas set up , steps of which were simplified radically and the cost was reduced greatly.Based on the new system, the system of propagation technique was optimizedand adjusted, and became more effective and practical. The...