| 摘要: |
| 为明确植物常用颜色测定工具英国皇家园艺学会比色卡(Royal Horticultural Society Color Chart，RHSCC)的颜色特征及其在花色测定应用上的科学性，以884个RHSCC色号和150个盆栽香石竹品种花色为研究对象，采用色差仪测定法和色卡目测比对法进行颜色测定，利用统计学方法和色差公式进行颜色分析。结果表明:RHSCC 884个色号在高明度、红色及黄色分量区分布密集；在a*b*二维分布上集中于第I和第II象限；60个色号两两间最小色差值为0.50~1.50，其中4个色号处于不同UPOV(国际植物新品种保护联盟)色组。RHSCC目测法结果显示，150个盆栽香石竹品种中，47个品种花色难以比对到准确的RHSCC色号(花色及其近似色卡色差值>6.00)；部分品种花色可比对到2个RHSCC色号(色卡间色差值<3.00)。RHSCC目测法对品种分组的结果表明，粉色系颜色区间过大，白色和深紫色系区间过小；黄绿色、黄色和绿色3个色系难以在颜色阈值上区分；多数色系含有游离颜色等问题。综上，RHSCC在花色测定时需要考虑其局限性，包括部分色号间色差值过小，人眼分辨困难；部分颜色未覆盖，导致观测结果不准确；比对结果难以有效用于品种分组等。 |
| 关键词: RHSCC 盆栽香石竹 花色测定及分组 色空间 色差值 |
| DOI：10.11841/j.issn.1007-4333.2022.11.08 |
| 投稿时间：2022-03-26 |
| 基金项目:国家自然科学基金项目(31760589)；云南省科技计划项目农业联合面上项目(2017FG001-(-032))；云南省技术创新人才培养项目(2015HB100)；绿色食品牌打造科技支撑行动(质量安全)专项 |
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| Research on color traits of Royal Horticultural Society Color Chart and its application in flower color testing of potted carnation |
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TENG Cailing1,YANG Xiaohong1,DENG Chao2,LIU Yanfang1*,HAN Ruixi2*
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| (1.Quality Standards and Testing Technology Research Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205, China;2.Development Center of Science and Technology, Ministry of Agriculture and Rural Affairs, Beijing 100176, China) |
| Abstract: |
| To clarify the color traits of Royal Horticultural Society Color Chart(RHSCC), a commonly used tool in plant color testing, and its scientific application in determination of flower colors, this study focused on the 884 colors of RHSCC and flower colors of 150 potted carnation varieties, and conducted the color testing with the aid of colorimeter-mediated digital measurement and RHSCC-mediated visual measurement, and completed the color analysis taking advantage of statistics and color difference formula. Our results showed that: the 884 colors of RHSCC mainly distribute in the color spaces with high lightness, redness and yellowness; two-dimensional distribution of a* and b* concentrate in quadrant I and II; minimum values of color difference of 60 colors(between two colors)are 0. 50-1. 50, among which, 4 colors belong to different UPOV(International union for the protection of new varieties of plants)color groups. Results of RHSCC-mediated visual measurements indicated that, among the 150 potted carnation varieties, flower colors of 47 varieties were difficult to be matched with suitable RHSCC colors(values of color difference between flower colors and its similar RHSCC colors>6. 00); flower colors of some varieties can be matched with 2 RHSCC colors(values of color difference between the matched 2 RHSCC colors<3. 00). Results of variety grouping in view of RHSCC-mediated visual measurements illustrated that, color interval of pink group was too large, while white and dark purple group had small intervals; groups of yellowish green, yellow and green were difficult to be distinguished in terms of their color threshold values; outlier colors were common in most color groups. In conclusion, defections of RHSCC in flower color testing need to be considered, including color differences between several colors are too small to be distinguished for human eyes; Measurement accuracy is low due its color coverage is limited; Visual measurements are difficult to apply in effective variety grouping. |
| Key words: RHSCC potted carnation varieties flower color testing and grouping color space value of color difference |
