山西梓树良种‘晋梓2号’的选育  

Breeding of Improved Variety on Catalpa Ovata ‘ Jinzi No.2’ in Shanxi

作　　者：张娜[1,2] Zhang Na(Shanxi Academy of Forest Sciences,030012 Taiyuan,China;Research Institute of Forest in North China,Chinese Academy of Forestry,030012 Taiyuan,China)

机构地区：[1]山西省林业科学研究院,山西太原030012 [2]中国林业科学研究院华北林业研究所,山西太原030012

出　　处：《山西林业科技》2020年第1期9-11,共3页Shanxi Forestry Science and Technology

基　　金：中央财政林业科技推广示范项目([2018]TG03号);山西省林业科技创新项目(LYCX201933)。

摘　　要：本研究以生态防护林作为梓树选育目标,通过初选和复选,收集梓树优树,采用嫁接繁殖方式进行扩繁,并进行区域性试验。采用主成分分析法对区域试验结果进行综合评价,选育出’晋梓2号,。研究结果表明,’晋梓2号’树干通直,分枝点高,生长速度快,年生长量大;8年生平均树高10.43叫平均胸径11.08 cm;该无性系抗性、适应性强,生长健壮,无病虫害,适宜在山西省太原以南地区种植。The ecological protection forest was selected as the breeding target of Catalpa ovata.Through preliminary selection and re-selection,excellent trees of Catalpa ovata were collected.The excellent trees were propagated through grafting and the regional experiments were conducted.The results of regional experiment were evaluated by principal component analysis and'Jinzi No.2'was selected.Results showed that the trunk of'Jinzi No.2'was straight with high branching points,fast growth speed and large annual growth.The average height of 8-year-old trees was 10.43 m,and the average DBH of it was 11.08 cm.The resistance and adaptability of this clone was strong.It grew well and had no pests and diseases.It was suitable for planting in the south of Taiyuan in Shanxi province.

关 键 词：山西 优良品种 选育 晋梓2号 

分 类 号：S792.99[农业科学—林木遗传育种]