| 俞熙仁.基于主成分分析的新余蜜桔果实品质综合评价及其与果实膨大期降雨量的关系[J].中国南方果树,2025,54(5): |
| 基于主成分分析的新余蜜桔果实品质综合评价及其与果实膨大期降雨量的关系 |
| Comprehensive evaluation of fruit quality of Xinyu tangerine based on principal component analysis and its relationship with rainfall during fruit expansion |
| 投稿时间：2024-10-25 修订日期：2024-11-15 |
| DOI： |
| 中文关键词: 新余蜜桔 降水量 相关性分析 主成分分析 品质评价。 |
| 英文关键词:Xinyu Tangerine Precipitation Correlation analysis Principal component analysis Quality evaluation. |
| 基金项目:国家自然科学基金（21964009）、国家农产品质量安全风险评估项目（GJFP20220302）、江西省重大科技研发专项（20203ABC28W014-6）、江西省自然科学基金（20232BAB215020） |
|
| 摘要点击次数: 159 |
| 全文下载次数: 0 |
| 中文摘要: |
| 对果实快速膨大期降水量差异较大两个年份、不同果园的新余蜜桔果实品质进行综合分析和评价，为新余蜜桔分等分级、种植技术改良和综合开发利用提供理论依据。以2022年和2023年两年间采集的28个不同果园的新余蜜桔为实验材料，分析测定其15项品质指标，对比两个降水量差异较大的年份间各个品质指标的变化情况，再通过相关性分析和主成分分析对品质指标进行降维处理，筛选出能够综合反应新余蜜桔果实品质的主成分构建评价模型，综合评价新余蜜桔果实品质。2022年新余蜜桔果实膨大期降水量较低，其单果重、横径和诺米林含量低于2023年果实，其他品质指标均高于2023年果实，其中橙皮苷、柚皮苷、新橙皮苷三种黄酮类化合物差异最大。经主成分分析提取出了4个主成分，累计方差贡献率为86.047%。主成分分析综合得分显示2022年果实品质显著高于2023年果实，说明果实膨大期水份匮乏有利于新余蜜桔果实品质提升。 |
| 英文摘要: |
| The study conducts a comprehensive analysis and evaluation of Xinyu tangerine fruit quality in diverse orchards during the rapid fruit enlargement period over two years with varying precipitation, providing a theoretical foundation for the classification and grading of Xinyu tangerine, enhancement of planting technology, and holistic development and utilization. 28 samples from different orchards in 2022 and 2023 were used as experimental materials,15 quality characteristics were analyzed and determined. comparing the changes of each index between two years with large precipitation difference; and following by correlation analysis and principal component analysis to identify core indicators for evaluating Xinyu Tangerine quality. The precipitation during the fruit expansion period of Xinyu Tangerine in 2022 was lower, and its single fruit weight, transverse diameter, and Nomilin content were lower than those in 2023. Other quality characteristics were higher than those in 2023. Among them, the differences in three flavonoid compounds including hesperidin, naringin, and neohesperidin were greatest. Four principal components were extracted through principal component analysis. It was found that a cumulative variance contribution rate was 86.047%. The composite score derived from principal component analysis indicated that the quality of fruits harvested in 2022 was significantly higher than that in 2023, which suggesting that the moderate drought during the fruit enlargement period may be advantageous for improving Xinyu tangerine fruit quality. |
| 查看/发表评论 下载PDF阅读器 |
| 关闭 |
