Allelopathic effect of extracts from the fibrous roots of Coptis chinensis on Lactuca compositae, Vigna radiate and Brassica rapa pekinensis Evaluation of high yielding soybean germplasm under water limitation Allelopathic effects of extracts from fibrous roots of Coptis chinensis on two leguminous species Comparison of Main Compositions in Tuberous and Fibrous Roots of Ophiopogon japonicus Optimization of enzymatic extraction of effective constituents from fibrous roots of Salvia miltiorrhiza by central composite design and response surface method Allelopathic effects of extracts from tuberous roots of Aconitum carmichaeli on three pasture grasses Comparison on histology of root tubers and fibrous roots of Ophiopogon japonicus and ophiopogonins content