烤烟种质焦油释放量及其影响因素的相关性分析  

Correlation Analysis of Tar Content in Flue-cured Tobacco Germplasm and Its Influencing Factors

作　　者：柳林青 杜咏梅[1] 王振娟 付秋娟[1] 张洪博[1] 闫宁[1] 刘艳华[1] 刘静 鞠馥竹 LIU Lin-qing;DU Yong-mei;WANG Zhen-juan;FU Qiu-juan;ZHANG Hong-bo;YAN Ning;LIU Yan-hua;LIU Jing;JU Fu-zhu(Tobacco Research Institute of Chinese Agricultural Science,Qingdao 266101;Graduate School of Chinese Academy of Agricultural Sciences,Beijing 100081;Linqu Filiale Corporation of Weifang Tobacco Corporation,Linqu 262600)

机构地区：[1]中国农业科学院烟草研究所,青岛266101 [2]中国农业科学院研究生院,北京100081 [3]山东潍坊烟草有限公司临朐分公司,临朐262600

出　　处：《植物遗传资源学报》2020年第4期923-929,共7页Journal of Plant Genetic Resources

基　　金：公益性行业(农业)科研专项(201203091);中国农业科学院科技创新工程(ASTIP-TRIC05);山东省自然科学基金资助项目(ZR2019QH004)。

摘　　要：以种植在山东、四川两个省份的205份烤烟种质为研究材料,通过多年多点精准鉴定,筛选出窝里黄0782、P3、黔南七号、82-3041、吉烟9号等低焦油烤烟种质17份。系统调查了株高、叶数、茎围等农艺性状,检测了初烤后烟叶中6项常规化学成分,并采用简单相关分析、通径分析和回归分析等方法探讨农艺性状、化学成分与焦油释放量的相关关系。结果表明,烟叶化学成分对焦油释放量的贡献大于农艺性状,特别是总糖、还原糖与焦油释放量呈极显著正相关,而钾与焦油释放量呈极显著负相关。各因子对焦油释放量的直接作用顺序为:钾>总糖>烟碱>腰叶长>叶绿素>茎围>株高。钾和总糖主要通过直接作用影响焦油释放量,烟碱对焦油释放量的直接影响作用和间接影响作用相近,腰叶长、叶绿素以及茎围等农艺性状可间接影响焦油释放量,其他指标对焦油释放量影响不显著。最后,建立了农艺性状、化学成分与焦油释放量的回归模型,可为低焦油烤烟种质的筛选与利用提供技术支持。This study investigated tar content of 205 flue-cured tobacco germplasm accessions which were collected from Shandong province and Sichuan province,China.Seventeen low-tar flue-cured tobacco germplasms such as Wolihuang 0782,P3,Qiannan No.7,82-3041 and Jiyan No.9 were identified by deployment of multiyear and multiple location experiments.Furthermore,the agronomic traits including plant height,leaf number and stem diameter were scored,and six conventional chemical components in the cured tobacco leaves were examined.The correlation between agronomic traits,chemical composition and tar release was investigated by using simple correlation analysis,path analysis and regression analysis.An extremely significant positive correlation was revealed between tar release and any of total sugar and reducing sugar.An extremely significant negative correlation was detected between potassium and tar release.No significant correlation was observed between other factors and tar release.The tar release were contributed by potassium,followed by total sugar,nicotine,middle leaf length,chlorophyll,stem diameter as well as plant height.Potassium and total sugar mainly affect tar content through direct action.The direct and indirect effects of nicotine to tar release are similar.Agronomic traits including waist length,chlorophyll and stem diameter can indirectly affect tar release,and other factors showed no obvious effect on tar content.Finally,a regression model between agronomic traits,chemical composition and tar release was proposed,which is of importance for the screening and utilization of low-tar flue-cured tobacco germplasm.

关 键 词：烤烟资源 化学成分 农艺性状 焦油释放量 相关性分析 

分 类 号：TS411[农业科学—烟草工业]