Research progress and application of low accumulation crop variety screening technology in ensuring safe production on heavy metal contaminated farmland
Planting low accumulation crop varieties in heavy metal contaminated farmland is a hot topic in the current area of safe production in agriculture.Due to the limited arable land in China,planting the crop varieties with low-accumulation capability of contaminants obtained from screening in moderately or lightly heavy metal contaminated farmland is an important measure to maintain the continuous production capacity.Screening techniques for crop vari-eties accumulating less heavy metals mainly consist of traditional screening techniques,molecular genetics tech-niques,and technologies based on big data and artificial intelligence.Although the traditional screening methods are simple and easy relatively,the evaluation of heavy metal accumulation ability is subjected to the poor reliability.Mo-lecular genetics technology has achieved some progresses in the application of variety screening,yet it still needs to be further improved and optimized.The combination of big data and artificial intelligence technology provides a pow-erful tool for variety screening,which can quickly and accurately analyze and excavate large-scale genomic and phe-notypic data to predict and select varieties with genes related to low accumulation of heavy metals.On the basis of summarizing the research advances and application status of screening techniques for low accumulation crop varieties,we propose their feasibility,sustainability,future research directions and development trends,in order to provide a reference for promoting the large-scale application of low-accumulation crop varieties.
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