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[目的]筛选出耐铅性较强的荞麦资源。[方法]用水培法对19份荞麦资源的耐铅性进行研究。以发芽的荞麦种子在3d内的根伸长量及根系活力衡量荞麦耐铅性的程度[结果]低浓度的Pb2+处理能促进T352、L2081、T308、T442、T393根系生长量和根系活力的增加,但根系生长量和根系活力均随Pb2+处理浓度的进一步而增加下降,说明上述荞麦材料抗铅胁迫能力较强。不同地区之间荞麦材料的耐铅能力存在差异,以威宁地区材料的耐铅能力较强。[结论]荞麦基因型间的耐铅胁迫能力存在差异,以原产于威宁地区的荞麦材料T352、T308、T442、T393耐铅能力较强,值得在荞麦耐铅性育种和耐铅机制研究中开发利用。
[Objective] The research aimed to screen buckwheat resources with strong tolerance to lead. [Method] The tolerance of lead to 19 buckwheat resources was studied by hydroponics. Root elongation and root activity of germinated buckwheat seeds were measured in three days. [Results] Low concentrations of Pb2 + treatment could promote root growth and root activity of T352, L2081, T308, T442 and T393 , But root growth and root activity both increased and decreased with the concentration of Pb2 + treatment, indicating that the above buckwheat material is more resistant to lead stress. The buckwheat materials in different regions have different ability of tolerating lead, and the lead-tolerant materials of Weining region are stronger. [Conclusion] There was a difference in the tolerance to lead among buckwheat genotypes. T352, T308, T442 and T393, which originated from the Weining area, were more tolerant to lead, In the development and utilization.