Kaznina N M, Titov A F, Laĭdinen G F, Talanov A V
Izv Akad Nauk Ser Biol. 2009 Nov-Dec(6):677-84.
The effect of high zinc concentrations on the growth and photosynthetic apparatus of Setaria viridis (L.) Beauv. was investigated under laboratory conditions and a vegetation experiment. The experiments showed that zinc concentrations of 10(-6) to 10(-3) M did not influence seed germination. Moreover, zinc in concentrations of 40 and 80 mg kg(-1) substrate had no significant effect on most of the plant growth parameters. However, higher metal concentrations (160 and 320 mg kg(-1) substrate) inhibited shoot biomass, leaf area, inflorescence length, and biomass. At the same time, parameters such as the content of chlorophyll (a + b), F0, F(v), and the F(v)/F(m) rate were not reduced even in the presence of zinc in the highest concentrations (320 mg kg(-1) substrate). S. viridis tolerance of high zinc concentrations, as well as its capacity to accumulate zinc in roots and shoots, suggests the plant can be used for phytoremediation of zinc polluted soils.
在实验室条件和植被实验下，研究了高锌浓度对绿色狗尾草生长及光合器官的影响。实验表明，10⁻⁶至10⁻³M的锌浓度不影响种子萌发。此外，40和80 mg kg⁻¹底物浓度的锌对大多数植物生长参数无显著影响。然而，较高的金属浓度（160和320 mg kg⁻¹底物）抑制了地上部生物量、叶面积、花序长度和生物量。同时，即使在最高锌浓度（320 mg kg⁻¹底物）存在的情况下，叶绿素（a + b）含量、F0、F(v)以及F(v)/F(m)比率等参数也未降低。绿色狗尾草对高锌浓度的耐受性及其在根和地上部积累锌的能力表明，该植物可用于锌污染土壤的植物修复。
