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. 2019 Dec 18;9:19358. doi: 10.1038/s41598-019-55903-3

Figure 7.

Figure 7

Long-term application of CBNs to salty soil reduced the toxic effects of salt stress and improved the growth and yield of Catharanthus. The introduction of CBNs to salty soil positively affected the production of flowers in Catharanthus cultivated in CNT-mixed soil (A,C) and graphene mixed-soil (B,D) under imposed salt stress. Control Catharanthus were grown in regular soil, NaCl exposed Catharanthus were grown at soil supplemented with 50 mM NaCl and CBNs exposed Catharanthus were cultivated in soil supplemented with 50 mM NaCl in presence of different concentrations of CNTs or graphene. The greenhouse experiment was repeated twice (n = 8 for each treatment). The statistical significance was determined as compared to Catharanthus treated with 50 mM NaCl by p < 0.05 and p < 0.01 (*p < 0.05 and **p < 0.01).