The associations between petal pigments and scent compounds of Rosa hybrida were determined in eight commercial cultivars with different petal-colors, visually classified as four petal-color groups: ‘Beast’ and 'Marilyn Monroe' in white (W), ‘Good Time’ and ‘Penny Lane’ in yellow (Y), ‘Ahoi’ and ‘Pink Condor’ in pink (P), and ‘Pearl Red’ and ‘Vital’ in red (R). The petal pigments were distinct by visual petal color polymorphs. Yellow petals contained only carotenoids and unusually large amounts of β-carotenes as their primary pigments, whereas white ones included minimal levels of carotenoids. As expected, pink and red flowers had cyanin as the major anthocyanin. The amount of cyanin in petals was significantly higher in the red petals. Unlike petal pigments, the scents were abundant in white and yellow flowers, containing both phenolic and terpene compounds. The pink and red flowers, on the other hand, were scented with only phenolics as represented by 2-phenylethanol and 3,5-dimethoxytoluene, which existed in all eight cultivars. The amount of detected scent was up to six times higher in the white or yellow flowers than in the pink or red ones. A principal component analysis (PCA) with all detected pigments and scents resulted in classifying eight cultivars as three independent groups: (GI) ‘Beast’, (GII) ‘Good Time’, ‘Penny Lane’, and ‘Marilyn Monroe’, and (GIII) ‘Ahoi’, ‘Pink Condor’, ‘Pearl Red’, and ‘Vital’. ‘Marilyn Monroe’ (W) belonged to GII with yellow cultivars, not to GI with ‘Beast’ (W). The PCA coordinates of pink and red cultivars were so close that they belonged to the same group, GIII. With this information, we know that rose petal colors may differ in terms of their pigment and scent profiles.

中文翻译：

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八种不同花瓣颜色的切花玫瑰品种中的花色素-香味关联

在八个具有不同花瓣颜色的商业栽培品种中确定了玫瑰花瓣色素和气味化合物之间的关联，在视觉上将其分为四个花瓣颜色组：白色 (W) 中的“野兽”和“玛丽莲梦露”，“好时光”黄色（Y）的“Penny Lane”，粉色（P）的“Ahoi”和“Pink Condor”，红色（R）的“珍珠红”和“Vital”。花瓣色素通过视觉花瓣颜色多晶型物而不同。黄色花瓣仅含有类胡萝卜素和异常大量的β-胡萝卜素作为它们的主要色素，而白色花瓣含有极少量的类胡萝卜素。正如预期的那样，粉红色和红色的花朵以花青素为主要花青素。花瓣中花青素的含量在红色花瓣中明显较高。与花瓣色素不同的是，白色和黄色的花朵散发出浓郁的香味，含有酚类和萜类化合物。另一方面，粉红色和红色的花朵只有酚类物质的香味，以 2-苯基乙醇和 3,5-二甲氧基甲苯为代表，这两种物质都存在于所有八个品种中。 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 白色或黄色花朵中检测到的气味量是粉色或红色花朵的六倍。对所有检测到的色素和气味进行的主成分分析 (PCA) 导致将八个栽培品种分类为三个独立的组：(GI)“野兽”、(GII)“好时光”、“便士巷”和“玛丽莲梦露”，以及(GIII) 'Ahoi'、'Pink Condor'、'Pearl Red' 和'Vital'。'玛丽莲梦露'（W）属于带有黄色品种的 GII，而不是带有“野兽”（W）的 GI。粉红色和红色品种的 PCA 坐标非常接近，以至于它们属于同一组 GIII。有了这些信息，