Fig 1. Cq values of candidate reference genes in all carrot samples.

Asterisks denote outliers. The line across the box depicts the median value. The inside box depicts Cq values. The outside box’s bottom line is determined by the 25^th percentile, whereas the top line is determined by the 75^th percentile. The top and bottom whiskers are determined by the 5^th and 95^th percentiles, respectively.