Study on the relationship between Eucalyptus clones and the damage degrees caused by Leptocybe invasa Fisher et La Salle
In order to find the relationship between Leptocybe invasa Fisher et La Salle and different Eucalyptus clones, to learn the change process of the host stress response after being damaged, and investigate the nutrients and secondary metabolites that related to its resistance towards the damage by the gall wasp, and obtain effective measures for prevention and pest-control technology, 5 plots had been set up in Zhangzhou, Fujian respectively in May 2011. Damaged degrees of different clones by the gall wasp were investigated, the contents of the nutrients and secondary metabolites were measured, and the relationships were analyzed by the grey correlation analysis. The results showed that E. wophylla × E. grandis DH32-29 and E. grandis QG5 were resistant clones, while E. grandis QG3, E. grandis QG5 and E. wophyUa × E. tereticornis DH201-2 were high-susceptible clones. Compared with high-susceptible clones, the contents of soluble sugars and protein of petioles in the resistant clones were significantly higher than those of high-susceptible clones, but polysaccharide was significantly lower than that of high-susceptible ones. And the contents of flavonoids, tannins and total phenols of petioles in the resistant clones were significantly higher than those of the high-susceptible ones. According to grey correlation analysis between contents of nutrients and secondary metabolites of petioles in different clones and damage degrees by the gall wasp, the content of polysaccharide had greater impact on growth and development of the wasp than other nutrition, and the content of tannin had greater impact on the insect-resistance than secondary metabolites.
Leptocybe invasa Fisher et La SalleEucalyptus clonesnutrientssecondary metaboliteinsect resistancegrey correlation analysis
国家科技期刊平台
NSTL
万方数据
维普
