| 紫色叶用莴苣色差参数及花青素含量的相关性分析 |
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| 引用本文：王文珠，刘明霞，侯 栋,崔银花,罗 涛.紫色叶用莴苣色差参数及花青素含量的相关性分析[J].西北农业学报,2026,(3):466~470 |
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| 基金项目:甘肃省科技计划重大专项（24ZDNA005）；甘肃省技术创新引导计划（25CXNA0270)；金昌市重点科技计划（2024NY016z）。 |
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| 中文摘要:以紫色叶用莴苣为研究对象，系统分析叶片色差参数（亮度L*、红度a*、黄度b*、彩度C*、饱和度S*）与花青素含量的相关性，旨在建立基于色差分析的紫色叶用莴苣花青素含量快速检测方法。结果表明，不同品种叶用莴苣的花青素含量差异显著（91.54~528.42 μg·g-1），呈现丰富的紫色梯度变异；随着叶色由浅紫向深紫转变，L*持续降低，b*呈先降后升的趋势，a*则表现为“上升-下降-再上升”的变化特征；相关性分析表明，花青素含量与a*呈极显著正相关（相关系数为 0.866），与b*、C*均呈显著正相关（相关系数为 0.800）。综合分析表明，a*可作为紫色叶用莴苣花青素含量预测的关键色差指标。 |
| 中文关键词:紫色叶用莴苣 花青素 色差参数 相关性 |
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| Correlation between Color Parameters and Anthocyanin Content in Purple Lettuce |
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| Abstract:Leaf color is acrucial phenotypic trait for breeding and quality evaluation of lettuce varieties.In this study,purple lettuce was used as the study object,and the correlation between leaf color parameters (lightness L*,redness a*,yellowness b*,chroma C*,saturation S*) and anthocyanin content was systematically analyzed,aiming to establish a rapid detection method for detecting anthocyanin content in purple lettuce based on color analysis.The results showed that the anthocyanin content among different lettuce varieties varied significantly (ranging from 91.54 to 528.42 μg·g-1),exhibiting abundant purple gradient variation.As the leaf color changed from light purple to dark purple,the L* value continuously decreased,the b* value first decreased and then increased,and the a* value showed a fluctuating trend of increase-decrease-increase.Correlation analysis demonstrated that anthocyanin content was significantly positively correlated with the a* value (r=0.866) and with the b* and C* values (r=0.800).Comprehensive analysis showed that the a* value could serve as a key color indicator for predicting anthocyanin content in purple lettuce. |
| keywords:Lettuce Anthocyanin Color difference parameters Correlation |
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