早熟禾育种的研究进展与现状

The research progress of Poa breeding

对早熟禾的种利品种、生殖方式、染色体数目及倍性水平、遗传育种等方面的国内外研究进展与现状作了较系统的论述，重点介绍了草地早熟术和一年牛早熟禾的育种方法及有成品种，指出草地早熟禾是二倍体无孢子生殖，染色体数目变化很大，可以用单株选择法及种内和种间杂交等方法培育有性生殖品种利无融合品种，并介绍了目前早熟术育种的研究方向和内容。

In this paper' the research progress of home and abroad of the species, varieties,reproduction, chromosome number and ploidy levels, genetics and breeding of Poa is dissussed,in which the breeding method of Poa Pratensis L. and P annua L- are introduced in detail. Poa.Pratensis L. reproduces itself by apospory the number of its chromosome varies greatly and the sexual and apomictic varieties can be bred by individual selection, intraspecific and interspecific hybridization.