A New Species of Trichosanthes from Guizhou Seed Plant Florae in Mabian Dafengding National Nature Reserve A new triterpenoid isolated from fruits of Liquidambaris Fructus Cloning and Expression Analysis of DaF3H Gene in Yam(Dioscorea alata) A STUDY ON EVOLUTIONARY RELATIONSHIP OF THE BASIC CHROMOSOME NUMBER BETWEEN X=10 AND X=11 IN THE POLYANTHOUS DAFFODILS (NARCISSUS TAZATTA L.) A New Species of Trichosanthes from Guizhou Genetic Differentiation of Quercus mongolica and Q. liaotungensis Based on Morphological Observation, Isozyme and DNA Analysis Studies on tissue culture of Anemone flaccida Cloning and Expression Analysis of DaF3H Gene in Yam(Dioscorea alata) Study on the Adaptation of Milu Herd to the Photoperiod at Dafeng Reserve