Abstract:
In order to select some suitable varieties for tailings vegetation restoration, eight Festuca arundinacea seeds were treated with the simulated drought stress with 200 g/L polyethylene glycol(PEG-6000) solution. The 11 indexes such as thousand-grain weight and germ length were measured. The drought resistance of different varieties was evaluated by grey correlation analysis. The results showed that the order of drought resistance of eight Festuca arundinacea varieties from strong to weak was: Phoneix, Vegas, Easycare, Barrera, Tempo, Starlet, BarlexasII,Tracer. In aspect of resistance, Phoneix was evaluated as class 1 with high drought resistance, Vegas and Easycare were evaluated as class 2 with drought resistance, as well as Tempo, Starlet, Barlexas Ⅱ and Tracer were evaluated as class 3 with middle drought resistance, respectively. Therefore, Phoneix was the optimum selection in the process of vegatation restiration in mining wasteland in Guizhou, followed by vegas.