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- Title
连作烤烟根系内次生代谢产物对烤烟品质因子的影响.
- Authors
潘义宏; 周芳芳; 黄 坤; 冀新威; 单双吕; 张晓龙; 张加研
- Abstract
[Objective] The research was conducted in order to clarify the influence of secondary metabolites accumulation in roots of fluecured tobacco under continuous cropping conditions on the quality factors of flue-cured tobacco, and provide theoretical support for the reduction of obstacles of flue-cured tobacco continuous cropping. [ Method] The ' Yunyan 87 ' was used as the test flue-cured tobacco variety in Luxi county, Honghe prefecture. Four continuous-cropping durations were set up: continuous cropping for two years, three years, four years and five years. At the maturity stage of flue-cured tobacco, GC-MS was used to detect the content of secondary metabolites in the roots of flue-cured tobacco of different treatments. Through autocorrelation analysis, factor analysis and canonical correlation analysis, the types of factors that had a greater impact on the quality of flue-cured tobacco and their relationship with the quality factors ( appearance quality, physical characteristics, conventional chemical composition, sensory quality of flue-cured tobacco) were evaluated. [Result] Total of 14 secondary metabolites were detected and determined in the roots of flue-cured tobacco. Through factor analysis, four common factors were extracted, and the cumulative contribution rate reached 85. 74%, that were phenolic acid factors, aldehyde ester factors, ester factors and phenolic factors respectively. Canonical correlation analysis of four common factors and quality factors of flue-cured tobacco found that the higher the contents of vanillin, dioctyl phthalate, 2, 2 '-methylene bis-( 4-methyl-6-tert-butylphenol), methyl palmitate and heptadecanoic acid in fluecured tobacco roots, the better the coordination of chemical components of tobacco leaves, but not conducive to the improvement of other quality of tobacco leaves. The higher the content of anisodamine, soft ester acid and arachidic acid in the root system, the lower the content of myristic acid and 2, 2 '-methylene bis-( 4-methyl-6-tert-butylphenol), which was conducive to improving the sensory quality of tobacco leaves, but not conducive to the improvement of other quality indexes of tobacco leaves. [ Conclusion] The secondary metabolites in the roots of flue-cured tobacco have influence on the quality factors of flue-cured tobacco, and 9 of them have significant influence. Therefore, in order to overcome the obstacles of continuous cropping of flue-cured tobacco, the content of 9 key secondary metabolites in the upper-part roots should be regulated through the research of relevant regulation technology, so as to maintain a low level and improve the comprehensive quality factors of tobacco leaves.
- Subjects
FACTOR analysis; STATISTICAL correlation; TOBACCO
- Publication
Southwest China Journal of Agricultural Sciences, 2023, Vol 36, Issue 10, p2167
- ISSN
1001-4829
- Publication type
Article
- DOI
10.16213/j.cnki.scjas.2023.10.012