林木群体交配系统研究进展

Advances in Research on Mating Systems of Forest Tree Populations

本文简要回顾了林木群体交配系统研究的历史，重点阐述了利用同工酶作为遗传标记对该问题的研究进展。目前开展交配系统研究的树种已超过５２个，大部分研究集中在针叶树种，研究群体由原来的天然群体为主，到后来的天然群体与人工群体并重，转对人工群体的研究日渐加强。研究结果表明：针叶树种群体的异交率大都在９０％左右，阔叶树种则相对较低，异交水平会因个体、冠层、群体密度、花量、花期不同而有所不同。根据上述情况，文章对今后的研究作了讨论。

The paper briefly reviews the history of reseach on mating systems of forest tree populations with emphasis on the advances in studies using isozymes as genetic markers. Up to now, the number of tree species for which mating systems have been studied is more than 52. The mating system study was firstly focused on natural populations, then moved to both natural and artificial papulations. However, the study was increasingly focusd an artificial papulations in recent years. From the research done, conclusions can be reached as follows: the outcrossing rates of conifers are mostly around 90% while those of broadleaf trees are relatively lower; the outcrossing rates may change with differnce in individuals, level of crowns, population density, amount of flowers, reproductive phenology. Based on the results, the authors discusses the further research needed in this field and suggests that more research in seed orchards in China be carried out.