Comprehensive Assessment of Drought Resistance of BILs Population Derived from Dongxiang Wild Rice(Oryza rufipogon Griff.) at Seedling Stage and Its Genetic Analysis
66 rice(Oryza sativa L.)materials,including four upland rice,the backcross inbred lines(BILs)derived from the combination R974//R974/Dongxiang wild rice(Oryza rufipogon Griff.,Hereafter DXWR),and their parents,were employed for evaluation of drought resistance and screening of drought resistance index at seedling stage.Nine traits were monitored for assessment of drought resistance,including maximum root length(MRL),number of root(NR),stem length(SL),dry root weight(DRW),fresh root weight(FRW),root relative...