The difference of hydroxysafflor in 80 safflower cultivars and its correlations with flower color were investigated, to evaluate the difference of HSYA and flower color in different safflower cultivars. 80 safflower cultivars were used as the test materials, and HSYA and flower color were measured by high performance liquid chromatography (HPLC) and HunterLab EasyMatch? QC4.41. The results showed that HSYA was significantly different among the 80 safflower cultivars, ranging from 0.05 to 14.99 mg/g, and the highest one was about 288 times higher than that of the lowest, and the average value of HSYA was 11.36 mg/g and HSYA of 43 tested safflower cultivars was higher than the average value. HSYA was significantly different among different geographical origins, HSYA of Africa cultivars was higher than that of Asia and Europe cultivars;
HSYA of China cultivars was higher than that of Turkey, India and Kenya cultivars. Four types of flower colors were determined among the 80 safflower cultivars, the L value of red, orange, yellow and white cultivars was 50.99, 36.22, 33.51 and 33.13, respectively, the a value was 6.37, 21.32, 26.80 and 27.66, respectively, and the b value was 50.99, 21.32, 33.80 and 32.65, respectively. Significantly positive correlation was detected between flower color and L, a and b value in different safflower cultivars; HSYA of orange and yellow cultivars was significantly and positively correlated with a, hue and shade; HSYA of red cultivars was significantly and positively correlated with a, b and shade, which indicated that the higher the a value, the redder the color, and the higher the b value, the more orange the color.
Key words
safflower; genotype; flower colors; hydroxysafflor
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