北华大学学报（自然科学版）2017，Vol.18Issue(5)：581-586,6.DOI:10.11713/j.issn.1009-4822.2017.05.005
寒温带水曲柳自然群体变异分析及 优良个体的早期选择与评价
Analysis on the Natural Populations Variation,Early Selection and Evaluation of the Excellent Individual of Fraxinus mandshurica in the Cool Temperature Zone
摘要
Abstract
By the method of positional observation of fixed standard fields,this thesis performed on discussing the genetic variation of the tree height and DBH from the natural populations and open-pollinated progenies, and analyzing systematically the heritability and the genetic gains in quantity characters on the basis of analyzing and evaluating its selection of population,the genetic variation and the heredity effects,then screened out excellent ones and its individual both growth vigor,resistance and adaptability from these populations. The research results showed that there were greatly significant difference on the quantitative characters among the natural populations of Fraxinus mandshurica in the Cool Temperature Zone, and the coefficient of variance from the tree height (24. 29%) was smaller,but its DBH (45. 02%) was larger. On the other hand,there was greatly significant difference among its open-pollinated progenies on the tree height and DBH within natural populations. Meanwhile,the growth characters had strong heritability,high genetic gain,and remarkable heredity effects. The heritability of tree height and its DBH was 0. 858 and 0. 860,and the genetic gain were 16. 68% and 30. 98%, respectively. Therefore,WCH was determined to be excellent natural population both in the growth,resistance and adaptation with growth traits as the main evaluation index,and WCH25,WCH12 and WCH27 were determined to be excellent individuals, which were applied in the advanced generation improvement breeding. All these for utilizing legitimately the genetic resource distributed in the Cool Temperature Zone, and for improving the scientific additional value of superior populations from Fraxinus mandshurica.关键词
水曲柳/寒温带/自然群体/变异分析/优良个体/选择与评价Key words
Fraxinus mandshurica/Cool Temperature Zone/natural population/variation analysis/excellent individual/selection and evaluation分类
农业科技引用本文复制引用
兰士波..寒温带水曲柳自然群体变异分析及 优良个体的早期选择与评价[J].北华大学学报（自然科学版）,2017,18(5):581-586,6.基金项目
黑龙江省科技厅项目(GC04B116) （GC04B116）
国家林木种质资源平台运行服务项目(2011DKA21003-02) （2011DKA21003-02）
国家林业公益性行业专项(201204307-07). （201204307-07）
