江汉平原美洲黑杨杂交无性系初选  

Preliminary Selection of Hybrid Clones of Populus deltoides in Jianghan Plain

作　　者：荣新军[1] 龙开莲 周伟 童帆 黄光明 樊孝萍[1] Rong Xinjun;Long Kailian Zhou Wei;Tong Fan;Huang Guangming;Fan Xiaoping(Shishou Poplar Research Institute of Hubei Academy of Forestry,Shishou 434400;Shishou Nanyue Mountain Forest Park Management Institute,Shishou 434400)

机构地区：[1]湖北省林科院石首杨树研究所,石首434400 [2]石首市南岳山森林公园管理所,石首434400

出　　处：《湖北林业科技》2022年第5期13-17,共5页Hubei Forestry Science and Technology

基　　金：中央财政林业科技推广示范资金项目“杨树楸树速丰林可持续生产关键技术应用示范”(鄂20227G01);湖北省林科院石首国家杨树良种基地林木良种培育补助项目。

摘　　要：以155个美洲黑杨杂交无性系为材料,利用连续5 a的生长量数据进行了统计分析及优良无性系初选。结果表明:155个无性系5 a生平均胸径为19.47 cm,平均树高为20.39 m;不同无性系间1~5 a生的胸径、树高及材积生长量差异均达到极显著水平,且1~5 a生胸径、树高及材积的重复力皆超过0.70。根据5 a生材积大小及干型特征,从155个无性系中选择出11个优良无性系,其中10个无性系的材积生长量超过对照‘华石2号’和‘丹红杨’。本研究初选的优良无性系为该地区进一步选育速生黑杨良种奠定了物质基础。155 hybrid clones of Populus deltoides were used for statistical analysis and preliminary selection of excellent clones by using the growth data for 5 consecutive years.The results showed that the 5-year-old average DBH of 155 clones was 19.47 cm and the average tree height was 20.39 m.There were highly significant differences in the every year growth amount of DBH,height and volume,the repeatability of 1~5 year old DBH,height and volume exceeded 0.70.According to the 5-year-old volume and stem type characteristics,11 excellent clones were selected from 155 clones,of which there were 10 Clones that volume growth exceeded the control‘Huashi 2 nd’and‘Danhong’.The excellent clones selected in this study laid a material foundation for further breeding of fast-growing P.deltoids Varieties in this area.

关 键 词：美洲黑杨 杂交无性系 初选 江汉平原 

分 类 号：S792.39[农业科学—林木遗传育种]