Evaluation of drought resistance of cold season turf grass tall fescue and perennial ryegrass
[Objective]The effects of drought stress on turfgrass and the selection of turfgrass varieties with strong drought resistance were studied[Method]Four varieties of cold season turfgrass Festuca arundinacea and Lo-lium perenne were selected,which are suitable for northern China.The growth rate,appearance,biomass,leaf relative water content,chlorophyll,malondialdehyde content and other growth and physiological indexes of various varieties under different drought stress intensity were measured and analyzed by using 10%and 20%PEG-6000 simulation tests,respectively.The stress degree of turfgrass was comprehensively assessed by membership function method.[Result]The growth and performance of different turfgrass varieties under drought stress were inhibited to some ex-tent,the relative water content and chlorophyll content decreased,and the malondialdehyde content increased.[Con-clusion]Through comprehensive evaluation,the order of drought resistance of each variety was as follows:Lvtuo>Lichuan>Jiaozhan>Lightning>Rebel Ⅳ>Tailu>Jinghua>Rebel Ⅴ.
万方数据
维普
