楸树杂种无性系早期选择研究  

Study on Early Selection of Hybrid Clone of CatalpaBungei

作　　者：王俊青 赵天宇 谷凤平 刘同 冷英 敖书飞 王文武 

机构地区：[1]湖北省襄阳市林业科学研究所,襄阳441052

出　　处：《湖北林业科技》2014年第6期21-23,共3页Hubei Forestry Science and Technology

基　　金：湖北省林业公益项目(2012DBA39);湖北省林业科技支撑项目"湖北楸树资源收集评价及新品种选育研究"

摘　　要：对5a生楸树杂种无性系的生长性状进行统计分析,结果表明:无性系间胸径、树高、地径生长性状的差异均达到显著或极显著水平,其胸径最大值为5.09 cm,树高最大值为4.13 m,地径最大值为6.55 cm。胸径、树高、地径生长性状受到中度以上程度的遗传控制。通过综合比较,初步选出3个优良无性系,胸径、树高遗传增益最高值为18.55%,13.45%,入选率13.00%。The Growth traits of 5GyearGold of hybrid clones of Catalpa bungei were measured and analyzed.The results showed that the growth traits including DBH（diameter at breast height）,tree height,ground diameter among clones were significantly or extremely significantly different among hybrid clones;The maximum value of DBH was 5.09 cm,and the maximum value of tree height was 4.13 m,and the maximum value of ground diameter was 6.55 cm and the DBH,tree height and ground diameter growth traits were moderately controlled by heredity.Three superior clones were preliminary selected by comprehensive comparison;and the highest values of the genetic gain of the DBH,tree height were 18.55%and 13.45% respectively;and the selection rate was 13.00%.

关 键 词：楸树 杂种无性系 重复力选择 

分 类 号：S722.3[农业科学—林木遗传育种] S792.25[农业科学—林学]