Figure 1. Traits improvement during Huanghuazhan breeding.

Black points are cultivars in Huanghuazhan pedigree, the red point is Huanghuazhan, and the green point is Teqing (a) Grain length improvement according to breeding year, x-axis is breeding years of the corresponding cultivar, and y-axis is grain length. (b) Grain length-width ratio improvement during Huanghuazhan pedigree breeding. (c) Grain yield improvement during the breeding.