| 毛佳琦，郑允允，张二强，王 培，付玉洁，王 瑶.烟叶稳定碳同位素组成受控因素分析[J].广东农业科学,2021,48(7):17-23 |
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烟叶稳定碳同位素组成受控因素分析 |
| Analysis of Controlled Factors of Stable Carbon Isotope Composition in Tobacco Leaves |
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| DOI：10.16768/j.issn.1004-874X.2021.07.003 |
| 中文关键词: 烟叶 叶位 经度 纬度 稳定碳同位素 聚类分析 |
| 英文关键词: tobacco leaf position longitude latitude carbon isotope cluster analysis |
| 基金项目:陕西中烟工业有限责任公司卷烟制丝大数据分析与智能化应用技术研究项目（BA000-ZB19015） |
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| 中文摘要: |
| 【目的】探讨烟叶稳定碳同位素组成的受控因素，为烟草种植评价指标体系的完善及生态适应性
机理研究提供新的理论依据。【方法】选取我国西南、东南、长江中上游和黄淮 4 个主要一级烟草种植区生理
成熟期烟叶进行稳定碳同位素组成（δ13C）分析。【结果】供试烟叶样本 δ13C 值分布在 -27.76‰ ~-25.39‰，平
均值为 -26.46‰。烟叶 δ13C 值与经度呈显著负相关关系，经度每增加 1°，烟叶 δ13C 值减小 0.09‰；与纬度呈二
次抛物线关系。不同叶位烟叶 δ13C 值具有显著差异，表现为上部叶片＞中部叶片＞下部叶片。4 个种植区烟叶
δ13C 值为西南种植区≈黄淮种植区＞长江中上游＞东南种植区。利用碳同位素对不同香型烟叶聚类结果表明，
不同产地的清香甜香型和醇甜香型烤烟能够被明确聚类，而对焦甜焦香型、清甜蜜甜香型、焦甜醇甜香型和蜜
甜香型 4 种香型烤烟没有明显的聚类效果。【结论】烟叶稳定碳同位素组成与经度呈负相关关系，与纬度呈二
次抛物线关系，不同叶位烟叶稳定碳同位素组成不同，利用 δ13C 值可以对清香甜香型和醇甜香型烤烟进行有效
聚类。 |
| 英文摘要: |
| 【Objective】The study was conducted to explore the controlled factors of the stable carbon isotope
composition in tobacco leaves with a view to provide a new theoretical basis for the improvement of tobacco planting
evaluation index system and the study of ecological adaptability mechanism.【Method】The stable carbon isotope
composition（δ13C）analysis was carried out on tobacco leaves which were collected during the mature stage from four
major first class tobacco growing areas in China, namely, Southwest China, Southeast China, upper and middle reaches of
the Yangtze River and Huanghuai area.【Result】The δ13C values of tobacco leaves ranged from -27.76 ‰ to 25.39 ‰ ,
with an average value of -26.46‰ . The δ13C values decreased with longitude significantly, with a rate of 0.09‰ , and the
values showed a quadratic parabola relationship with latitude. In addition, there were significant differences in δ13C values in different leaf positions, and the results showed as upper leaves ＞ middle leaves ＞ lower leaves. In terms of tobacco growing
areas, δ13C value results of four tobacco growing areas showed as: Southwest planting area ≈ Huanghuai planting area ＞
Yangtze River planting area ＞ Southeast planting area. Moreover, the cluster analysis results showed that fragrant sweet tobacco
and alcoholic sweet aroma tobacco were clustered clearly based on δ13C values of tobacco from different origins. However, the
other four aroma types（burnt-sweet and burnt-fragrant type, mildly and honey sweet type, burnt-sweet and alcoholic sweet
type and honey sweet type）cannot be clustered obviously as the independent variables.【Conclusion】The stable carbon
isotope composition of tobacco leaves has a negative correlation with longitude and a quadratic parabolic relationship with
latitude. The stable carbon isotope composition of tobacco leaves at different leaf positions is different. The δ13C value can be
used to effectively cluster the fragrant sweet and alcoholic sweet aroma tobacco. |
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