Gene localization regulation of plant growth and traits: Principles and techniques

Author: Yin Weilun Hu Jianjun
Publisher:
Publish Date: 2005-09-01
Features: Poplar is one of the important species for afforestation, greening, and industrial timber in China, with artificial poplar forest planting areas reaching 6.67 million hectares. However, poplar pests and diseases are very severe, among which longhorn beetle and canker are adverse factors restricting the development of artificial poplar forests. 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 hold 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.