Evaluation and Grey Relational Analysis between the Agronomic Characters and Quality Indicators of DifferentGenotypes Flue-cured Tobacco

PurposeIn order to provide a references on selection of the related traits of the new flue-cured tobacco varieties (lines), and its popularization and application, explore the correlation of the main agronomic and economic traits with the main chemical components usability index (CCUI), weight score of sensory and appearance quality evaluation.

MethodUsing HKDN-2, C81-2-2, K326 and Yunyan87 as materials, we analyzed the grey relational grades of CCUI and weight score of sensory and appearance quality evaluation with the main agronomic and economic traits of raw tobacco based on the analysis of CCUI by using the fuzzy theory.

Results 1) The correlation degree of the weight score of sensory and appearance quality evaluation of B2F & C3F with main agronomic traits of the different genotypes flue-cured tobacco was shown as leaf width>leaf length>effective leaf number>pitch>plant height>leaf areas>stem girth. 2) The correlation degree of CCUI of B2F & C3F with main agronomic traits of the different genotypes flue-cured tobacco was shown as leaf width>leaf length>effective leaf number>pitch>plant height>leaf areas>stem girth. 3) The correlation grade between the weight score of sensory and appearance quality evaluation of B2F and single leaf weight was high more than that of C3F, and so did CCUI of B2F was lower than that of C3F. 4) There was a certain degree of correlation among the economic traits with CCUI the weight score of sensory and appearance quality evaluation.

ConclusionIt has an important correlation of main agronomic and economic traits of the different genotypes flue-cured tobacco with CCUI, the weight score of sensory and appearance quality evaluation.