云南松优良无性系早期选育关键问题的探讨  

Discussion on Key Problems of Excellent Clone Selection of Pinus yunnanensis at Early Stage

作　　者：刘代亿[1] 李根前[1] 郑畹[2] 赵敏冲[1] 张跃敏[1] 

机构地区：[1]西南林学院,云南昆明650224 [2]云南省林业科学院,云南昆明650224

出　　处：《林业调查规划》2008年第3期67-72,共6页Forest Inventory and Planning

基　　金：云南省"十一.五"科技攻关项目"优质高效云南松林培育及优良无性系早期选育技术研究"(项目编号:2006NG29)

摘　　要：多年来,对云南松的遗传改良一直沿着有性方式的方向进行,虽然积累了丰富的有性改良材料,却忽视了无性改良的优越性.针对这一问题,在回顾有性改良工作的基础上,对无性改良的可行性和关键问题进行了探讨,如育种群体的建立、早期选择年龄的确定、如何提高无性繁殖系数等.针对缩短育种周期、提高单位时间遗传增益和选择可靠性的目标,提出了无性系早期选择的程序.Genetic improvement of Pinus yunnanensis has been carried out only with sexual pattern, but the advantage of clone selection has been ignored. On the basis of review of sexual improvement, the paper discusses the possibility for clone improvement and corresponding key issues, such as establishing of breeding groups, determining of early selection age and improving of clone propagation. Meanwhile it proposes the procedure of clone early selection in view of shortening the breeding cycle, increasing genet- ic return in a fixed time and selecting reliable objectives.

关 键 词：云南松 优良无性系 早期选择 选择程序 

分 类 号：S722.5[农业科学—林木遗传育种] S791.257[农业科学—林学]