Ding Xianyin, Li Yanjie, Zhang Yini, Diao Shu, Luan Qifu, Jiang Jingmin
Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, China.
Exotic Pine Cultivation Engineering Technology Research Center of National Forestry and Grassland Administration, Hangzhou, China.
Front Plant Sci. 2023 Feb 1;14:1079952. doi: 10.3389/fpls.2023.1079952. eCollection 2023.
Pine resin, as a natural material, has been widely used in food, pharmaceutical, and chemical industries. Slash pine ( Engelm var. ) is the primary tree species for resin tapping due to its high resin yield, low resin crystallization rate, and high turpentine content. Current researches focuse on the targeted improvement of several significant components to meet industrial needs rather than just resin yield. The objective of this study was to examine the genetic variation and correlation of genetic and phenotype for four main resin components (α pinene, β pinene, abietic acid, and levoprimaric acid) of 219 half-sib progenies from 59 families. The results showed that the levopimaric acid had the largest content (mean value = 21.63%), while the β pinene content had the largest variation coefficient (CV = 0.42). The α pinene content has the highest heritability ( = 0.67), while levopimaric acid has the lowest heritability ( = 0.51). There was a significant negative correlation between α pinene and the other three components and a significant positive correlation between β pinene and the two diterpenes. The family ranking and genetic gain suggested that it is possible to improve the contents of main resin components of slash pine through genetic breeding selection.
松脂作为一种天然材料，已广泛应用于食品、制药和化工行业。湿地松（Engelm var.）因其高树脂产量、低树脂结晶率和高松节油含量，是采脂的主要树种。目前的研究重点是有针对性地改良几种重要成分以满足工业需求，而不仅仅是树脂产量。本研究的目的是考察59个家系的219个半同胞子代的四种主要树脂成分（α-蒎烯、β-蒎烯、枞酸和左旋海松酸）的遗传变异以及遗传与表型的相关性。结果表明，左旋海松酸含量最高（平均值 = 21.63%），而β-蒎烯含量的变异系数最大（CV = 0.42）。α-蒎烯含量的遗传力最高（ = 0.67），而左旋海松酸的遗传力最低（ = 0.51）。α-蒎烯与其他三种成分之间存在显著负相关，β-蒎烯与两种二萜之间存在显著正相关。家系排名和遗传增益表明，通过遗传育种选择有可能提高湿地松主要树脂成分的含量。
