Cd is a common pollutant that contaminates the ecological environment of soil-crop systems and threatens food security and human health. Sorghum (Sorghum bicolor (L.) Moench) has a great potential for use as energy feedstock and Cd phytoremediation. Therefore, the identification of sorghum genotypes with high Cd accumulation is of great significance to Cd pollution remediation and production of bioenergy. A total of 126 biomass sorghum genotypes grown in a Cd-polluted field were investigated, and their agronomic traits were analyzed, including plant height, leaf number, shoot dry weight (SDW), soil and plant analyzer development (SPAD) value, and concentration of metal ions at seedling stage. Plant height was an important factor for screening potential biomass sorghum species because it presented a significant correlation with the Cd concentration in shoots and SDW (P < 0.01). The highest and lowest Cd concentration in sorghum shoots were 7.88 and 0.99 mg kg⁻¹, respectively. The Cd concentration presented a negative and significant correlation with Mn in sorghum shoots (r = −0.303, P < 0.01), which was in agreement with the results that sorghum species with high Cd concentrations have lower Mn concentrations. In the mature stage, sorghum 12530 presented higher Cd concentration and dry weight in shoots compared with other genotypes. In summary, plant height, SDW, and concentration of Mn in sorghum shoots are critical parameters that synthetically influence the accumulation of Cd in sorghum shoots.

镉是一种常见的污染物，会污染土壤作物系统的生态环境，并威胁到粮食安全和人类健康。高粱（高粱）（L.）Moench）具有用作能源原料和Cd植物修复的巨大潜力。因此，高Cd积累的高粱基因型的鉴定对Cd污染的修复和生物能源的生产具有重要意义。研究了在Cd污染田地中生长的126种生物量高粱基因型，并分析了它们的农艺性状，包括株高，叶数，枝干重（SDW），土壤和植物分析仪发育（SPAD）值以及浓度。阶段的金属离子的收集。株高是筛选潜在生物量高粱种类的重要因素，因为它与枝条中的Cd浓度和SDW呈显着相关性（P <0.01）。高粱芽中镉的最高和最低浓度分别为7.88和0.99 mg kg ^-1， 分别。Cd浓度与高粱芽中的Mn呈负相关且显着相关（r = -0.303，P <0.01），这与高Cd浓度的高粱物种的Mn浓度较低的结果一致。在成熟阶段，与其他基因型相比，高粱12530的芽中Cd浓度和干重更高。总之，高粱芽的株高，SDW和Mn浓度是综合影响高粱芽中Cd积累的关键参数。