Stress effects of simulated drought by polyethylene glycol on the germination of Caragana korshinskii Kom. seeds under different temperature conditions

In this study,we investigated the effect of drought on the germination characters of Caragana korshinskii Kom seeds under different temperature conditions. We carried out an experiment with 5 different constant temperatures( 10[degrees]C,15[degrees]C,20[degrees]C,25[degrees]C,and 30[degrees]C) controlled by artificial climate incubators and 7 simulated drought stress conditions created by different polyethylene glycol( PEG)-6000 concentrations( 0%,5%,10%,15%,20%,25%,and 30%). The results revealed that temperature, simulated drought stress by PEG, and their interaction had a significant impact on the germination percentage( GP),coefficient of germination rate( CGR),germination value( GV),germination index( GI),and vigor index( VI) of C. korshinskii Kom. seeds( P