一球悬铃木无性系苗期生长性状遗传变异与选择研究  

Genetic Variations and Growth Traits on Clones of Platanus occidentalis during Seeding Stage

作　　者：蔡晓明[1] 卢宇蓝[2] 施季森[3] 

机构地区：[1]川北医学院基础医学院,四川南充637007 [2]复旦大学生命科学院,上海200433 [3]南京林业大学,江苏南京210037

出　　处：《西北林学院学报》2009年第3期63-67,共5页Journal of Northwest Forestry University

基　　金：国家林业局重点课题(2003-002-L0)

摘　　要：无性系生长性状是无性系选育的重要指标，对50个一球悬铃木初选无性系进行苗期生长分析，结果表明：树高、地径、体积在不同无性系间达到极显著（P〈0．01）差异水平。利用Logistic方程拟合当年生苗高、地径、叶片数等年生长节律发现，无性系呈现慢、快、慢的阶段性生长节律。综合分析苗期生根、生长性状，初步选出NY36、SJ8、SJ36、ZJ9、SX1、ZJ36、NY44、DY10、DY36、ZJ14、ZJ29、DY14，DY16、SX36、NY14等生长优、生长性状重复力高的无性系，它们的平均遗传增益为17．0％～33．5％。The growth traits of 50 preliminarily selected clones during their seeding stages were investigated. The results showed that significant differences （P〈0.01 ） among different clones the in traits, such as height, ground diameter and volume. The fitting of the growth rhythms of the seedling height, ground diameter and number of leaves with Logistic equation indicated that these clones exhibited a staggered slow -fast-slow growth rhythm. After considering over their root growth and other growth traits, 15 clones which grew well and had a higher genetic repeatability with mean genetic gains between 17.0 % and 33.5 were selected： NY36, SJ8, SJ36, ZJ9, SX1, ZJ36, NY44, DY10, DY36, ZJ14, ZJ29, DY14, DY16, SX36, NY14.

关 键 词：一球悬铃木 无性系 生长性状 遗传变异 

分 类 号：S722.33[农业科学—林木遗传育种]