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- Title
油茶蓝翅天牛为害与寄主油茶内 营养物质和次生物质含量的关系.
- Authors
黄 欣; 李小珍; 姚志文; 肖 斌; 徐凡舒; 王广利
- Abstract
[Objectives] To determine the correlation between the occurrence of Chreonoma atritarsis and the nutrient and secondary metabolite content of its host plant, the oil tree, Camellia oleifera. [Methods] The five-point method was used to investigate C. atritarsis damage to young and adult oil trees. The water content and the total soluble sugar, reducing sugar, soluble protein, and the main secondary metabolites; i.e. total phenols, condensed tannins and flavonoids, among branches of different ages were quantified by oven drying, anthronecolorimetry, the 3,5-dinitrosaliculic acid method (DNS colorimetry), and staining with Coomassie brilliant blue G250. The correlation between the amount of damage and the content of each substance was then analysed statistically. [Results] Forest survey results indicate that most C. atritarsis damage to young oil tea trees was on branches at a height of ≤50 cm and a diameter of >1 cm, especially those with a diameter of 1-2 cm. In adult trees, branches at a height of > 50 cm and a diameter of >1cm sustained more damage, especially those with a diameter of >2 cm. The results of laboratory studies revealed that the most abundant nutrient and secondary metabolite contents of oil tea trees were, in descending order; soluble total sugar, reducing sugar, total phenols, condensed tannins, soluble protein and flavonoids. Among these, there was a significant difference in the content of each substance in the phloem and xylem of branches. The damage inflicted by C. atritarsis on young trees was negatively correlated with the ratio of reducing sugar to soluble total sugar, and positively correlated with soluble protein content. In adult trees, damage was negatively correlated with total phenols and condensed tannin content. [Conclusion] There was a significant, positive correlation between the amount of C. atritarsis damage and soluble protein content in oil tree branches, and a significant, negative correlation between the amount of C. atritarsis damage and the ratio of reducing sugar to soluble total sugar, total phenols and condensed tannin content. Monitoring for C. atritarsis should take into consideration both tree age and branch diameter. These results facilitate more effective monitoring, and obtaining early warning of outbreaks, of C. atritarsis.
- Publication
Chinese Journal of Applied Entomology, 2021, Vol 58, Issue 1, p132
- ISSN
2095-1353
- Publication type
Article
- DOI
10.7679/j.issn.2095-1353.2021.014