美洲黑杨无性系苗期初步评价  

Preliminary Evaluation on Seedling Stage of Populus deltoides Clones

作　　者：朱瑞强 陈莹 韩友吉[3] 张传余 苑正赛 仲倚林 李善文[3] 董玉峰[3] ZHU Ruiqiang;CHEN Ying;HAN Youji;ZHANG Chuanyu;YUAN Zhengsai;ZHONG Yilin;LI Shanwen;DONG Yufeng(Forestry Bureau of Shan County,Heze Shandong 273700;Shandong Forestry Protection and Development Service Center,Jinan Shandong 250014;Shandong Forestry Academy/Shandong Provincial Key Laboratory of Forest Tree Genetic Improvement,Jinan Shandong 250014;Shandong Youth University of Political Science,Jinan Shandong 250014)

机构地区：[1]单县林业局,山东菏泽273700 [2]山东省林业保护和发展服务中心,山东济南250014 [3]山东省林业科学研究院/山东省林木遗传改良重点实验室,山东济南250014 [4]山东青年政治学院,山东济南250109

出　　处：《山东林业科技》2022年第4期53-57,共5页Journal of Shandong Forestry Science and Technology

基　　金：山东省科技示范工程(2021SFGC0205)。

摘　　要：利用386个美洲黑杨无性系一年生苗高、地径进行方差分析、遗传参数估算发现,各性状在无性系间差异极显著,苗高、地径遗传变异系数分别为24.47%、40.48%,表型变异系数分别为25.77%、41.52%,广义遗传力分别为0.90、0.95,均较大,说明美洲黑杨无性系苗期各性状变异广泛,主要受遗传控制,可进行优良无性系选择。分别以中菏1号、I-69和T-66为对照,采用布雷金多性状综合评定法对美洲黑杨无性系苗高、地径进行综合评价,筛选出77个优良无性系,其群体苗高、地径遗传增益分别为6.14%、8.19%,现实增益分别为6.46%、9.09%,选择效果显著。筛选出的优良无性系可进一步营造区域化试验林,进而选育高产优质、适地适品种的优良无性系。The analysis of variance and estimation of genetic parameters of annual seedling height and ground diameter of 386Populus deltoides clones showed that there were significant differences among clones.The genetic variation coefficients of seedling height and ground diameter were 24.47% and 40.48%,and the phenotypic variation coefficients were 25.77% and 41.52%,the broad-sense heritability was 0.90 and 0.95,which indicated that the traits of P.deltoides clones varied widely at seedling stage,which was mainly controlled by heredity,and could be selected for excellent clones.Taking‘Zhonghe 1’、‘I-69’and‘T-66’as controls,the seedling height and ground diameter of P.deltoides clones were comprehensively evaluated by comprehensive evaluation method.Finally,77 excellent clones were selected.The genetic gains of seedling height and ground diameter were 6.14% and 8.19%,and the actual gains were 6.46% and 9.09%.The selected excellent clones can further build a regional experimental forest and breed excellent clones with high yield,high quality and suitable varieties.

关 键 词：美洲黑杨 无性系 苗期测定 遗传分析 综合选择 

分 类 号：S722.34[农业科学—林木遗传育种]