Construction of Poplar Genetic Map and Quantitative Trait Gene Mapping

Author: Yin Weilun
Publisher:
Publish Date: 2005-09-01
Features: Poplar is one of the important species for afforestation, greening, and industrial use in China, with a total artificial poplar plantation area of 6.67 million hectares. However, poplar pests and diseases are very serious, among which longhorn beetle and canker are adverse factors restricting the development of poplar plantations. Whether the pathogen of poplar canker can cause the tree to be infected depends on the tree's disease resistance. Different poplar species exhibit varying levels of resistance to poplar canker. Currently, the mechanisms causing this resistance difference are not yet fully understood. Therefore, establishing a molecular genetic map and conducting gene localization for disease and pest resistance quantitative trait loci (QTL) holds significant theoretical and practical importance for poplar disease and pest resistance gene cloning, resistance genetics research, and molecular marker-assisted selection.
Populus deltoides, belonging to the Populus section of the Salicaceae family, is native to North America and has no natural distribution in China. It was introduced and cultivated from abroad in the early 1970s, reaching its peak of introduction in the 1980s. Today, Populus deltoides and its hybrids are widely planted across China, becoming important resources for afforestation and breeding in China's forestry industry.