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研究分析了湿地松20个抗病无性系和14个易感株针叶中的松脂含量,结果表明抗病湿地松针叶中的松脂含量为7.17％,明显比易感株含量5.46％高。顶冠针叶的松脂含量与侧枝针叶的含量基本相近。对9个抗病无性系和4个易感株针叶挥发油中的单萜和倍半萜研究表明,湿地松针叶中的单萜和倍半萜的种类较多,不同无性系(或单株)间高含量单萜和倍半萜种类较稳定,某些低含单萜组分与抗病性之间存在着一定的联系。抗病无性系针叶中都缺乏在感病针叶中普遍存在的异龙脑和香草醇。
The results showed that the content of rosin in the leaves of the disease-resistant P. elliottii was 7.17%, significantly higher than that of the susceptible strain 5.46%. Crown crown coniferous rosette content and collateral coniferous content is similar. Studies on the monoterpenes and sesquiterpenes in the essential oil of nine resistant clones and four susceptible strains showed that there were more monoterpenes and sesquiterpenes in the softwood pine needles, ) Between the high content of monoterpene and sesquiterpene species is more stable, some low monoterpene components and disease resistance between the existence of a certain relationship. There is a lack of isoborneol and vanillyl alcohol that are prevalent in susceptible needles in resistant clones.