Quantitative traits of seed pericarp color were used to evaluate the sugar beet (Beta vulgaris L.) seed quality. These traits were measured on 10 single cross hybrids along with the male parent produced in three locations, Ardebil, Firouzkooh and Karaj, Iran. The quantitative traits included 9 color traits based on which the traits L*(Lightness/Luminance), a*(Red/Green color), b*(Blue/Yellow), RGB (Red–Green–Blue) and HSV (Hue- Saturation-Value) were measured. Results showed significant differences among the hybrids for seed pericarp color. The hybrids were classified into four clusters. Cluster C₂ which had the least L*, b*, R, G as well as quantity of color value (V) and included the SC (231*SB37), SC (231*SB17) and SC (231*SB16) single crosses, contained high quality seeds. The quantitative color traits were significantly correlated with some seed germination traits. Sugar beet seed pericarp color traits were related to female parent not to male parent and displayed significant correlations with the ratio of embryo to seed pericarp weight. In conclusion, analysis of quantitative traits of sugar beet seed pericarp color can be used to determine the time of maturity, to group the cultivars and to rank the seed quality.

种子果皮颜色的定量性状用于评估甜菜（Bet vulgaris L.）种子的质量。这些性状是在10个单交杂种中测得的，并与在三个地点（阿尔德比勒，Firouzkooh和伊朗卡拉伊）生产的雄性亲本一起测量。数量性状包括9个颜色性状，基于这些颜色性状L *（亮度/亮度），a *（红色/绿色），b *（蓝色/黄色），RGB（红色-绿色-蓝色）和HSV（色调-测量了饱和度值。结果表明，杂种之间的种子果皮颜色存在显着差异。杂种被分为四个集群。集群C ₂具有最小的L *，b *，R，G以及色值（V）的数量，并且包含SC（231 * SB37），SC（231 * SB17）和SC（231 * SB16）单十字高品质的种子。数量色性状与某些种子发芽性状显着相关。甜菜种子果皮的颜色性状与雌性亲本而不是雄性亲本有关，并且与胚重与种子果皮重量的比率显示出显着的相关性。总之，对甜菜种子果皮颜色定量特征的分析可用于确定成熟时间，对品种进行分组和对种子质量进行排名。