Genetic Test of New Cottonwood Clones at Nursery Stage

编号 zgly0000338917

文献类型 期刊论文

文献题名 Genetic Test of New Cottonwood Clones at Nursery Stage

学科分类 220.99;林学其他学科

作者 QINGuanghua  JIANGYuezhong 

作者单位 ShandongAcademyofForestry  Jinan250014  P.R.China 

母体文献 中国林业科技: 英文版 

年卷期 2004,3(1)

页码 67-73

年份 2004 

分类号 S792.11 

关键词 白杨  无性系  遗传性  遗传增益  苗期试验 

文摘内容 Twenty-five new clones belong to Populus Aigeiros of both domestic and foreign origin had been introduced and tested at nursery stage in Shandong province. Results showed that height (H),diameter at stem base (DO) and survival rate (SR) varied significantly and genetic variation were very large among the clones. CVg and broad-sense heritability (h^2) of H, DO and SR of 1-year-old stock nursery were 7.43%, 9.25%, 18.78% and 78.91%, 96.31%, 95.93%, respectively, showing high genetic control on the tested traits. 11 superior clones with characteristics of high growth rate and medium or high SR were primarily selected and genetic gains (△G) of H, DO and SR were 16.89%, 16.08% and 13.08%, respectively.Rooting habits test of some selected clones were also conducted based on the cutting culture in water container and annual growth increment measured. The date of first root emergence, number of main roots, number of lateral roots, length of main roots and the emergence date of growth peak varied to certain degree among the selected clones。