Comparative studies on adaptability of Germany ryegrass in Sichuan

29 introduced German ryegrass varieties were grown for two years to select adaptable ones in Suchuan compared with Tetragold and wild ryegrass, according to tillering, plants height, fresh biomass, growth characters at booting and maturity stages. The result indicated that variety Taurus, Barfort, Gemini, Fastyl had better comprehensive growth characteristics and could be used and extended in Sichaun. Licarno, Bartissimo and Alamo had fast jointing speed and higher plant height before heading; Tosca, Zarastro, Remy had strong tillering; Lolita showed high fresh biomass; Defo, Prestyl, Pomerol displayed late flowering and maturity, and could be used as parental materials for breeding.