Preservation in vitro of medicinal plant Salvia prionitis Study on Dwarf Effects of Seed Soaking with Plant GrowthRetardants on M use lla lasioca rpa A Study on Inhibitory Effect of Plant Growth Retardants on Earlier Bolting of Chinese Angelica Comparison of Effects of Four Plant Growth Retardants on Growth Characteristics of Poa pratensis DWARFING EFFECTS OF PACLOBUTRAZOL, CHLORCHOLINCHLORID AND DAMINOZIDE FORLIAR SPRAYS ON Zantedeschia hybrida Effects of Paclobutrazol,Uniconazole and Chlorcholinchlorid on Dwarfing of Zamioculcasz amiifolia Effects of Paclobutrazol,Uniconazole and Chlorcholinchlorid on Dwarfing of Zamioculcasz amiifolia Detection of agent "zhuanggenling" and investigation of utilization of plant growth retardants in traditional Chinese medicine cultivation Review on application of plant growth retardants in medicinal plants cultivation