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    邓婷, 卢维盛, 吴家龙, 等. 不同玉米品种对土壤镉富集和转运的差异研究[J]. 华南农业大学学报, 2019, 40(4): 33-39. doi: 10.7671/j.issn.1001-411X.201808045
    引用本文: 邓婷, 卢维盛, 吴家龙, 等. 不同玉米品种对土壤镉富集和转运的差异研究[J]. 华南农业大学学报, 2019, 40(4): 33-39. doi: 10.7671/j.issn.1001-411X.201808045
    shu
    DENG Ting, LU Weisheng, WU Jialong, et al. Differences of soil cadmium accumulation and translocation in different maize varieties[J]. Journal of South China Agricultural University, 2019, 40(4): 33-39. doi: 10.7671/j.issn.1001-411X.201808045
    Citation: DENG Ting, LU Weisheng, WU Jialong, et al. Differences of soil cadmium accumulation and translocation in different maize varieties[J]. Journal of South China Agricultural University, 2019, 40(4): 33-39. doi: 10.7671/j.issn.1001-411X.201808045
    shu

    不同玉米品种对土壤镉富集和转运的差异研究

    Differences of soil cadmium accumulation and translocation in different maize varieties

      摘要
    • 摘要:
      目的  通过盆栽试验研究11个玉米Zea mays品种的Cd富集和转运能力，并进行筛选，旨在为探究和发掘Cd高累积玉米品种提供一定的理论参考。
      方法  以11个玉米品种为研究对象，在全Cd质量分数为2.5 mg·kg−1的土壤中培养50 d，测定玉米干质量、Cd含量，采用方差分析和主成分分析法研究不同品种玉米在Cd污染土壤中的干质量、Cd富集和转运能力的差异。
      结果  11个品种玉米的根、茎叶的干质量、Cd质量分数、富集系数和转运系数间均差异显著(P<0.05)。华彩糯3号和广红糯8号玉米茎叶Cd质量分数分别为26.66和20.25 mg·kg−1、富集系数分别为10.66和8.10、转运系数分别为1.46和2.16，均显著高于其他品种(P<0.05)；主成分分析结果显示，华彩糯3号和广红糯8号玉米对Cd的富集和转运能力强于其他品种(P<0.01)。
      结论  华彩糯3号和广红糯8号玉米对Cd的富集和转运能力较强，属于Cd高累积玉米品种，在Cd污染土壤修复中具有较大的应用潜力。

       

      Abstract:
      Objective  A pot experiment was conducted to study Cd accumulation and translocation capacities of 11 maize (Zea Mays) varieties and to screen these varieties, so as to provide a theoretical basis for discovering maize varieties with high Cd accumulation.
      Method  Eleven maize varieties were cultured in soil with 2.5 mg·kg−1 Cd for 50 d. The dry biomass and Cd content were measured. We used variance analysis and principal component analysis to study the differences in dry biomass, Cd accumulation and translocation capacities of 11 maize varieties.
      Result  There were significant differences in the dry biomass of root and shoot, Cd content, Cd accumulation coefficient and translocation coefficient among 11 maize varieties (P<0.05). The Cd contents of Huacainuo 3 and Guanghongnuo 8 shoots were 26.66 and 20.25 mg·kg−1 respectively, accumulation coefficients were 10.66 and 8.10 respectively, and translocation coefficients were 1.46 and 2.16 respectively, which were significantly higher than those of other varieties (P<0.05). Principal component analysis showed that the Cd accumulation and translocation capacities of Huacainuo 3 and Guanghongnuo 8 were stronger compared with other varieties (P<0.01).
      Conclusion  Huacainuo 3 and Guanghongnuo 8 have relatively high capacity in Cd accumulation and translocation, and belong to the varieties with high Cd accumulation. They have great potential to remediate to Cd contaminated soil.

       

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