为了进一步探讨贵州烤烟生长特性，以K326、毕纳1号、贵烟1号、贵烟2号和K326有机烟为材料，研究了大田生育期（35、70、105 d）烟叶质体色素含量和颜色参数值的变化幵进行了相兲分析。结果表明，生育期烤烟烟叶质体色素含量和颜色参数（H*除外）值均呈逐渐下降的趋势。毕纳1号35 d和105 d质体色素含量显著高于其他材料；K326有机烟70 d和105 d质体色素含量显著低于其他材料，但其L*、b*和C*值显著高于其他材料。不同烤烟材料生育期烟叶L*和H*值差异均显著，且b*和C*值105 d显著高于35 d和75 d。不同烤烟材料烟叶质体色素含量与颜色参数值相兲均显著，其中质体色素含量与L*、a*值相兲系数较大，在0.805~0.866之间。线性回归分析表明，变量叶绿素b R2值（R2=0.915）最大，变量类胡萝卜素R2值（R2=0.847）最小；自变量中线性回归系数正值Xa*最大，其次是XH*。相对类胡萝卜素，烤烟生育期烟叶叶绿素含量与颜色参数值的线性回归性更好。%In order to furtherexplorethe growth characteristics of flue-cured tobaccoinGuizhou, the change and correlation analysis of plastid pigment contentsand color parameter valuesof flue-cured tobacco leaves in the different growth stage (35 d, 75 d, 105 d) withcultivarK326, Bina1, Guiyan1, Guiyan2 andorganic K326 were studied. The result showed that pigment contentsand color parameter valuesof differentcultivarsreduced gradually with the exception of H* in the different growth stage of flue-cured tobacco. Bina1 had a higher pigment content in the 35 d and 105 d while Organic K326 had a lower pigment content and a bigger value in the 75 d and 105 d. L*and H* value among differentcultivarswere significant difference in the different growth stage. Meanwhile,b* and C* value in the 105 d were significantly higher than that in the 35 d and 75 d. Correlation between pigment content and color parameters was significant among differentcultivars.Correlation coefficients between pigment content and L*, a*was in the range of 0.805 to 0.866.R2value (R2=0.915) of chlorophyll variablewas the largest whileR2value (R2=0.915) of carotenoidvariable was the smallest. In the independent variables, regression coefficient of Xa*was the largest, and then XH*. Compared withcarotenoid, chlorophyll content had a better linear regression with color parameters value of flue-cured tobacco leaves in the growth stage.Thisprovidestheoretical foundation for improving the tobacco production level on basis of the study of the change and correlation analysis of pigment content and color parameters value in the different growth stage of tobacco leaves in Guizhou.
展开▼
