Study on drought resistance and screening of the drought resistance assessment indexes at germinating stage of rice

25 % PEG-6000(w/v) was used to induce water stress , coleoptile length, radicle length, germination length, root number, germination rate, the dry weight of germinations and roots of different of rice at germinating stage were measured. The results showed that relative radicle length, relative germination length and relative dry weight of germinations could be used as indexes of assessing the drought resistance at germinating stage of rice .It was better that total classes from relative classes of the drought resistance was used to screen drought resistance of rice varieties .The drought resistance of 76 rice varieties was evaluated with this method .It was proved that the way was reliable.