Research Article
Tomato Seed Coat Permeability to Selected Carbon Nanomaterials and Enhancement of Germination and Seedling Growth
Figure 4
(a) A representative optical (bright field microscopy) image of the punctured seed cross section. Raman mapping was performed on the boxed area. (b) The Raman map of G-band intensity in the boxed region showing the presence of MWNTs. The red region represents a portion of the seed that exhibited the G-band signifying the presence of MWNTs, while the green region is devoid of MWNTs. (c) A typical Raman spectrum of MWNT includes a disorder band (or D-band) at 1350 cm−1 and a graphitic band (G-band) at 1585 cm−1.
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