A total of 38 CAPS markers were used for examining the genetic
distances among Chinese cabbage inbred lines. The PCR reaction was
performed using the following conditions; 1 cycle of 94 °C for 3 min,
35 cycles of 94 °C for 30 s, 55 °C for 30 s, and 72 °C for 1 min, and final
extension at 72 °C for 3 min. Amplified DNA digested by Afa I, Hae III,
Hha I, Hinf I, Mbo I, Msp I, or Hae III restriction enzymes were electrophoresed on 13% polyacrylamide gel. The gel was stained with Gelstar solution (0.1 μl/10 ml; Takara Bio Inc., Japan). Primer sequences used in this
study are shown in Table S3.