中国农学通报2026，Vol.42Issue(6)：64-71,8.
江汉平原新优南方型黑杨无性系评价选择
Evaluation and Selection of Newly Selected Superior Southern-type Black Poplar Clones for Cultivation in Jianghan Plain
摘要
Abstract
To screen suitable new superior southern-type black poplar clones for cultivation in the Jianghan Plain and accelerate the renewal of improved poplar varieties in the region,this study used the currently dominant elite cultivars'Danhong Yang'and'Nanlin 895'as controls.Twelve black poplar clones selected through early screening were evaluated.Through the 8-year positioning test from 2017 to 2024,the growth indexes such as diameter at breast height(DBH),plant height and volume of different forest ages were measured.Combined with the stem straightness,variance analysis,genetic parameter estimation and selection index method were used to evaluate the excellent clones.The results showed that extremely significant differences(P<0.01)existed in DBH and tree height among the 14 tested clones(including controls)at all ages.Volume at 8 years also showed highly significant differences,the individual tree volume of maximum clone at 8 years was 3.87 times that of the minimum clone.Growth rates for DBH and height varied significantly among clones over the 8-year period.Some clones exhibited faster growth in the first 2 years,others accelerated between years 3-4,and some showed rapid growth primarily from years 5-8.Net increment data for DBH,height,and volume at different ages revealed distinct growth patterns for southern-type black poplar in the Jianghan Plain.Fast-growth period occurred from 1 to 4 years post-planting for DBH,fast-growth period peaked between years 3-4 for height,fast-growth period spanned years 3-6 for volume.The repeatability of DBH,plant height and 8-year-old volume were 0.85-0.92,0.89-0.92 and 0.88,respectively,which were all high repeatability traits.Based on growth indicators(at 8 years)and stem straightness,three clones('HB-3650','08-01-52'and'08-01-41')outperforming the control'Danhong Yang'were selected from the 12 tested clones,representing a selection ratio of 25%.This study provides high-quality materials for the regeneration of poplar varieties in Jianghan Plain.In the future,comprehensive trait evaluation can be further carried out in combination with stress resistance,wood quality and other traits to accelerate the popularization and application of excellent clones.关键词
江汉平原/南方型黑杨/优良无性系/胸径/株高/树干通直度/评价选择Key words
Jianghan plain/southern-type black poplar/superior clone/diameter at breast height/height/stem straightness/evaluation and selection分类
农业科技引用本文复制引用
张亚东,龙开莲,黄国伟,樊孝萍,钟灵毓,张新叶..江汉平原新优南方型黑杨无性系评价选择[J].中国农学通报,2026,42(6):64-71,8.基金项目
中央财政林业科技推广示范项目"南方型黑杨优良新品种高效培育示范"(鄂[2025]TG16) （鄂[2025]TG16）
湖北省林业科技创新项目"湖北省林业长期育种体系构建及适应性育种技术研究"([2025]LKZC01). （[2025]LKZC01）
