Figure 1.

Box plots of four fruit-related traits grouped by species. We investigated the phenotype of the core collection, which contained only one Capsicum chacoense accession so, the phenotype of C. chacoense was excluded. Boxes indicate the range of upper quartile and lower quartile, and the bar in the box is the median. Whiskers from upper quartile to maximum and lower quartile to minimum are vertical lines. Black spots are outliers. The small alphabets showed the difference among the species. These significances were calculated by Dancan’s least significant range (LSR) test. The core collection has a distinct population structure by species. These phenomena were commonly observed for all four traits.