Figure 3. Fluorescence in cracked seeds of MS YY85 pelleted with dual-labeling method under illumination of different lights.

Ck: the top row, the control pellets treated without fluorescent materials and magnetic powder (×7); three columns from left to right: under natural light, blue light and green light, respectively; T: Seeds pelleted with fluorescent materials and magnetic powder under natural light; T1: 2 g seeds pelleted with 15 g bentonite and 84 g powder mixture which consisted of 79.6 g talc, 0.2 g fluorescein and 4.2 g magnetic powder (FR and MP dual-labels); T3: 2 g seeds pelleted with 15 g bentonite and 84 g powder mixture which consisted of 79.8 g talc and 4.2 g magnetic powder. Meanwhile, a 2.0 mg/ml of rhodamine B solution was sprayed in place of water when the seed was coated with bentonite (RB and MP dual-labels).