关键词: 月季, 种质资源, 花色, CIE Lab参数, 花青苷

Abstract: The petal colors of 227 rose germplasms were classified into 7 color series by CIE Lab color system. In the two-dimensional quadrant map of a* and b*，petal colors of germplasms were mainly distributed in the Ⅰ,Ⅱ,Ⅳ quadrant except the Ⅲ quadrant suggesting the lack of blue color in roses. Most of the germplasms could be clustered into 3 groups according to the lightness（L*）and chroma（C*）. The 1st group contained the germplasms of white and yellow color series. The 2nd group included the germplasms of the whole pink，purplish red，orange red color series and part of rose red color series. However，the 3rd group contained the germplasms of the whole dark red color series and part of rose red color series exhibited the positive correlations between L *and C*. The anthocyanins as standards were all detected in the germplasms by HPLC method，which cyanidin-3,5-di-glucoside（Cy3G5G）and pelargonidin-3,5-di-glucoside（Pg3G5G）ranked the most of the contents among six kinds of anthocyanins. Moreover，the contents of anthocyanins in the 3rd group were much higher than the other two groups. The above results indicated the abundant petal color diversity in rose germplasms. The correlation analysis further indicated that the contents of total anthocyanins（TA）were negatively correlated with L* in all germplasms. TA showed the positive correlations with a*/C* in the germplasms of the 1st and 2nd groups but the negative correlations in the 3rd group. There were no correlations between the anthocyanins and CIE Lab parameters in the 1st group. Two kinds of pelargonidins（Pg）exhibited the positive correlations with a*，b* and C* but no correlations with L* in the 2nd group，referring Pg could affect the colors but not the brightness. In the 3rd group，Cy3G5G as the unique anthocyanin presented the negative correlations with L*，a*/C*，indicating Cy3G5G might influence both the colors and the brightness.

Key words: rose, germplasm, petal color, CIE Lab color parameter, anthocyanin