Study on selenium accumulation characteristics of different ploidies Solanum nigrum

The selenium accumulation characteristics ofSolanum nigrumwith different ploidy were studied by the pot experiment, and the biomass, selenium content and selenium accumulation of diploid (Solanum photeinocarpum), tetraploid (Solanum photeinocarpum) and hexaploid (Solanum nigrum) plants were determined, the results showed that there was a difference between the biomass and selenium content of three kinds of ploidy plants ofS. nigrum. The biomass of various organs and shoots of hexaploidS. nigrumplants was significantly higher than that of tetraploid and diploid plants. In terms of selenium content and selenium accumulation, the hexaploid plants had the highest selenium content and selenium accumulation in stems, leaves and shoots. After comprehensive comparison, the hexaploidS. nigrumhas large biomass and strong selenium-enriching ability, so it can be used as an excellent plant material for soil selenium absorption and transformation.