白榆无性系对比试验及综合评价  

Comparative test and comprehensive evaluation of elm clones

作　　者：王玉忠[1,2] 张曼[1,2] 张全锋[1,2] 刘泽勇[1,2] 

机构地区：[1]河北省林木良种工程技术研究中心,河北石家庄050061 [2]河北省林业科学研究院,河北石家庄050061

出　　处：《中南林业科技大学学报》2017年第4期1-6,20,共7页Journal of Central South University of Forestry & Technology

基　　金：国家林业局林业公益性行业专项(201404214);河北省科技支撑计划项目(14273203D);河北省林业厅重点科研项目(1110403)

摘　　要：在对29个3年生白榆无性系生长指标和形质指标测定的基础上,采用方差分析和主成分分析法进行数据处理,比较各无性系间生长差异并进行综合评价及分类。结果表明:单株材积大于总体均值的无性系有13个,最大的是12号,为0.049 8 m^3,是最小的3.2倍;除第1大侧枝基部到地面高度外,其他指标在白榆无性系间均存在显著或极显著差异;生长性状的无性系重复力较大,遗传性好,形质性状相对较差,受环境效应影响较大。主成分分析从11个指标中提取3个相互独立的主成分,累计贡献率达84.25%,可实现对所有指标信息的反映,构建了综合评价模型F=a_1F_1+a_2F_2+a_3F_3,评价结果以YY1(11号)、YY2(12号)、古20(21号)、YY3(13号)这4个无性系的综合性状最优,同时应用主成分分类法将无性系分成速生型、较速生型和慢生型3类。Based on the investigation of growth characteristics and form characteristics of 29 kinds of three-year-old elm clones, analysis of variance （ANOVA） and principal component analysis （PCA） methods were applied to process data, compared growth differences among clones and conducted comprehensive evaluation and classification. Results showed that there were 13 elm clones＇ individual volume greater than overall average, the largest was 12（0.049 8 m3）, 3.2 times than the minimum; other characteristics had significant and highly significant differences among elms besides the high of the first big lateral branch to base; the repeatability of clones of growth characteristics were bigger, hereditary was good, the form characteristics were relatively poor because of greatly influenced by environmental effects. The principal component analysis extracted 3 mutual independent principal component, the accumulative contribution rate was 84.25% that ean realize the reflection to different characteristics information, constructed a comprehensive evaluation model： F=a1F1＋a2F2＋a3F3, Evaluation results showed that the comprehensive characteristics of YY1 （11）, YY2 （12）, the ancient 20 （21） and YY3 （13） were optimum, simultaneously applied principal component classification classified clones into fastgrowing, relatively fast-growing and slow-growing.

关 键 词：白榆无性系 主成分分析 综合评价 良种选育 

分 类 号：S792.19[农业科学—林木遗传育种]