| 摘要: |
| 为探究烤烟烟叶物理特性与化学成分的定量关系,并为客观准确评价烟叶质量提供理论依据,对2009年的90个烤烟烟叶的物理特性和主要化学成分含量进行检测鉴定,并进行了新复极差法多重比较和多元线性回归分析。结果表明:在所考察的5项物理特性(叶片厚度、单叶质量、含梗率、填充值和抗张强度)指标中,变异从大到小的排序为:叶片厚度＞单叶质量＞抗张强度＞含梗率＞填充值;4项化学成分指标(烟碱、氯、总糖和钾含量)变异从大到小的排序为:氯＞钾＞烟碱＞总糖。随着烟叶部位的增高,烟叶的厚度、单叶质量和抗张强度逐渐增大,而含梗率和填充值逐渐减小。烟叶物理特性和各项化学成分指标所建立的多元回归方程及回归系数均达到极显著水平。叶片厚度和含梗率与烟碱含量关系密切,其中叶片厚度(标准回归系数为0.551,下同。)与烟碱含量呈极显著正相关,含梗率(－0.268)与烟碱含量呈极显著负相关;叶片厚度(0.608)、含梗率(0.262)都与烟叶氯含量呈极显著正相关,是烤烟氯含量的重要影响因素;叶片厚度和填充值影响总糖含量的变化,其中叶片厚度(－0.577)与总糖含量呈极显著负相关,填充值(－0.210)与总糖含量呈显著负相关;单叶质量(－0.577)与钾含量呈极显著负相关。 |
| 关键词: 烤烟 物理特性 化学成分 回归分析 |
| DOI：10.11841/j.issn.1007-4333.2010.06.009 |
| 投稿时间：2010-04-08 |
| 基金项目:河南省烟草公司重大科技攻关项目资助(HYKJ200901)第一作者:王冬,硕士研究生,E-mail:wangdong_1985@yahoo.cn通讯作者:赵铭钦,教授,博士,主要从事烟草质量评价、烟草化学与香精香料、烟草生物发酵工程研究,E-mail:zhaomingqin@126.com |
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| Correlation and stepwise regression analysis between physicalproperties and chemical composition of clue-cured tobacco |
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WANG Dong, ZHAO Ming-qin, ZHANG Xue-jie, WANG Chuan
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| (Tobacco College of Henan Agricultural University/National Tobacco Cultivation ＆ Physiology ＆ BiochemistryResearch Center,Zhengzhou 450002,China) |
| Abstract: |
| To quantify the relationships between physical characteristics and chemical composition of flue-cured tobacco,we used correlation and stepwise regression to analyze the relationships among the physical parameters such as leaf thickness,single leafweight,stem content in lamina,filling power,tensile strength and chemical concentration of nicotine,chlorine content,total sugar,potassium.The results showed that the variation of physical parameters was in the order of leaf thickness>single leafweight>tensile strength>stem content>filling power,but chemical composition parameters Cl>K>nicotine>total sugar.Either leaf thickness,leaf weight or tensile strength increased with the height of stalk position.In contrar,stem content and filling power decreased.The multiple regression equation and regression coefficients were all highly significant.Leaf thickness and stem content were closely related with the nicotine content.Either leaf thickness or stem content was highly correlated with nicotine and chlorine contents,the standard regression coefficients being 0.511 and －0.268,and 0.608 and 0.262 respectively.Total sugar content was closely linked with leaf thickness(－0.577) and filling power (－0.210).Single leaf weight was significantly negatively correlated with potassium content (－0.577). |
| Key words: flue-cured tobacco physical characteristics chemical composition regression analysis |
