The invention relates to the technical field of agricultural technology and
biotechnology cross technologies, and particularly discloses a method for rapidly screening low-accumulation heavy
metal crop varieties and a device used by the method. The method comprises the steps that the device for rapidly screening the low-accumulation heavy
metal crop varieties is manufactured, then
crop seeds are subjected to
vernalization, the seeds are cultivated by using a
nutrient solution after the seeds are sowed in
nutrient agar medium of the device, after crops are cultivated to the required period, a heavy
metal solution is added to the
nutrient solution, the crops are harvested after cultivation, and low-accumulation heavy metal crop variety screening is carried out. The device is made of light-proof PVC boards, so that harmful substances are not prone to be leached out to affect a
research result, and a dark condition like that roots of the crops are in soil can be simulated; a
centrifuge tube and small holes are simultaneously used for marking, and thus the marking is convenient; and by adopting a water culture mode for cultivation, the
nutrient solution can provide nutrients and water, so that the
survival rate is high, and clean and complete crop plants, particular the roots, can be obtained rapidly and accurately.