Author：pine tree pubData：2019/5/15 3:26:56
Abstract: Pine trees are important species in global forest ecosystems and plantations. The genetic improvement of pine trees has progressed rapidly and effectively. Molecular marker technology provides a powerful tool for shortening the breeding cycle and improving breeding efficiency. This paper reviews the research progress in the construction of molecular marker genetic maps, comparative genetic mapping, quantitative trait locus (QTL) mapping, and marker-assisted selection for pine trees worldwide. There are 13 genera and nearly 40 tree species for which genetic linkage maps have been constructed, with pine trees accounting for 40%. However, most genetic maps of pine trees remain incomplete and do not cover the entire genome. Comparative genetic mapping shows that species within the genus Pinus exhibit a high degree of genetic conservation. QTL mapping indicates that the genetic basis of most traits is influenced by major effect genes, providing a solid foundation for marker-assisted selection. The species effect exists in the genetic control of certain important traits in hybrid pines, which has guiding significance for the formulation of marker-assisted selection and breeding strategies.
Keywords: Pine trees; genetic maps; comparative genetic mapping; QTL mapping; marker-assisted selection.