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ACTA HORTICULTURAE SINICA ›› 2019, Vol. 46 ›› Issue (6): 1145-1154.doi: 10.16420/j.issn.0513-353x.2018-0603

• Research Papers • Previous Articles     Next Articles

Flavonoid Components and Their Effects on Flower Colors in Camellia nitidissima,White C. japonica and Their Three Hybrid Cultivars

LI Xinlei1,*,WANG Jiatong1,2,SUN Zhenyuan2,WANG Jie1,YIN Hengfu1,FAN Zhengqi1,and LI Jiyuan1   

  1. 1Research Institute of Subtropical Forestry,Chinese Academy of Forestry,Hangzhou 311400,China;2State Key Laboratory of Tree Genetics and Breeding,Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,China
  • Online:2019-06-25 Published:2019-06-25

Abstract: The flower colors,flavonoid components and contents in dark yellow Camellia nitidissima,white C. japonica and their pale yellow hybrid cultivars were studied. The flower colors were measured by CIE L*a*b* scale,and flavonoids were qualitatively and quantitatively analyzed by ultra-performance liquid chromatography quadrupole-time-of-flight mass spectrometry. The relationship between flower colors and flavonoid components was explored by analyzed by multiple liner regression analyses. Ten flavonoids were detected in C. nitidissima,white C. japonica and their three hybrid cultivars. The flavonoids including pelargonium-3-O-glucoside(Pg3G),luteolin-7-O-rutinoside(Lu7R),eriodictyol(Er)and genistin(Gin)were identified in C. nitidissima for the first time. Pg3G,Er and Gin were not determined in white C. japonica‘Yinbai Chalis’and‘Baifeng’,and the contents of Lu7R were extremely low. The main components of C. nitidissima were quercetin-3-O-glucoside(Qu3G),quercetin-3-O-rutinoside(Qu3R),quercetin-7-O-glucoside(Qu7G),kaempferol-3-O-glucoside(Km3G),Pg3G and Lu7R. The contents of luteolin(Lu),kaempferol(Km)and Er in hybrid cultivars surpassed their parents,and those of the rest and total flavonoids were between their parents. Qu3G and Qu3R were the important components which decided the yellow color of C. nitidissima and its hybrid cultivars,and the increase of their contents caused the flower color to remarkably turn yellow. The accumulation of Qu3G significantly enhanced the brilliance of flower color,and Pg3G affected the color tone.

Key words: Camellia nitidissima, hybrid cultivar, flavonoids;flower color, ultra performance liquid chromatography quadrupole-time-of-flight mass spectrometry

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