【摘要】 杨树是中国广泛栽培的重要造林树种之一 ,我国是世界上杨树资源丰富的国家 .杨树具有速生丰产、实用性强、无性繁殖能力强 ,且基因组较小等特点 ,现已成为研究林木生理和基因工程研究的模式树种 .该文概述了基因工程技术、遗传图谱构建、重要性状基因定位以及分子标记辅助选择育种等方面在中国杨树遗传改良中的应用研究进展 ,并对现代分子生物学技术在林木遗传改良应用中存在的主要问题和应用前景进行了讨论更多还原

【Abstract】 Poplars are among the most important deciduous tree species in China. China is replete with natural resources of poplars. Poplars have a number of good characteristics, including fast growth rate, high yield, many uses, easiness of tissue culture and small gene group that make them well suited as a model system for the application of genetic engineering in forest trees. In the last decade, much progress has been made in genetic improvement of poplar species in China. Modern biotechnology is an important tool for genetic improvement in forest trees, and its applications to genetic improvement in poplars, which covers genetic transformation, gene expression, construction of genetic linkage map, QTLs (quantitative trait loci) identification and molecular assisted selection are reviewed in this paper. At the same time, the existing problems and outlook about the application of modern biotechnology to genetic improvement in forest trees are also discussed.更多还原