a Photograph (42 DAT) of the rice lines tested in a paddy field in the quarantine area of the Field Science Center of Tohoku University (Osaki, Miyagi, Japan) and b field layout. Each population contained five 1.2-m-long rows of rice with 20 cm between rows and 15 cm between hills. The box in the upper left indicates the two plots photographed on several occasions (Fig. 3). NT, nontransformant. Original figure: Suzuki et al. .