Fig. 5

Influence of X-ray dose on plant growth. Kinandang Patong was cultivated for 2 weeks, and was subjected to daily CT scanning: a images of tissues above the ground (scale = 10 cm); b images of tissues under the ground (scale = 5 cm); c plant height; d total root length; e shoot dry weight; f root dry weight. Data for c–f were measured at 3 weeks after sowing. Sample size was five for each treatment, and error bars represent standard deviations. P values based on Student’s t tests are indicated on the figures