关键词:  中国, 杨树, 遗传改良

Abstract:

China is replete with rich natural resource of Populus. The work of directional genetic improvement , mainly aimed at developing genetically improved poplar cultivars, used industrial woody plantations and protective stands in China. This paper summarizes the key results of several national key five-year projects undertaken by researchers of the Chinese Academy of Forestry. Significant genetic developments of species of Tacamachaca and Aigeiros described include (1) straregies for genetic improvements of parent materials, (2) collection and evaluation of poplar resources in China, (3) match-crossing of poplar species and relationships between parent and progeny, (4) insights on heterosis and new cultivars obtained by selection and breeding, and (5) results of breeding integrated in biotechnologies such as salt-tolerant somatic mutants of Populus×xiaozhuanica, the molecular linkage map of Populus deltoides Marsh×P.cathayana Rehd. , and associations between quantitative traits and molec...更多

Key words: China Populus Genetic improvement