楸树古树无性系1a生嫁接苗高生长规律研究  

Seedling height growth of 1-year old grafted seedlings of Catalpa bungei

作　　者：李效云 郁国强 李建新 罗松 韩斌 鲁仪增 许庆标 LI Xiao-yun;YU Guo-qiang;LI Jian-xin;LUO Song;HAN Bin;LU Yi-zeng;XU Qing-biao(Heze Forestry Bureau,Heze,Shandong 274000;National Forestry Grassland Acer truncatum Engineering Technology Research Center,Ji'nan,Shandong 250102;Shandong Provincial Forest and Grass Germplasm Resources Center,Ji'nan,Shandong 250102)

机构地区：[1]菏泽市林业局,山东菏泽274000 [2]国家林业草原元宝枫工程技术研究中心,山东济南250102 [3]山东省林草种质资源中心,山东济南250102

出　　处：《河北林业科技》2022年第3期25-28,共4页Journal of Hebei Forestry Science and Technology

基　　金：山东省农业良种工程项目“珍贵用材树种种质资源收集保存与精准鉴定”课题(2019LZGC01804);泉城“5150”引才倍增计划创新人才(团队)项目“梓属树种种质资源收集及繁育研究”;山东省林业科技创新项目“栎属、梓属等乡土树种种质资源收集评价及利用研究”(LYCX01-2018-01);中央财政林业改革发展资金项目“楸树良种繁育及栽培技术推广”(鲁[2018]TG13号)。

摘　　要：为掌握楸树古树嫁接苗的高生长规律,以5省23个地市古树资源为无性繁殖材料,采用1a生枝条作为接穗:1a生梓树实生苗为砧木进行芽接,对其苗高生长量进行调查分析。结果表明:楸树古树嫁接苗高121.5~222.8cm,平均值为184.12cm,变异系数为0.1468,高生长量之间存在极显著差异,并与古树所在纬度呈极显著正相关。不同采集地楸树古树的嫁接苗生长节律呈明显的“S”型生长曲线,即呈现出“慢快慢”的生长规律;7~8月是楸树古树嫁接苗高生长的速生期,连续高生长增量占总生长量的78%以上。In order to understand the height growth law of the grafted seedlings of ancient catalpa trees,the ancient tree resources in 23 cities of 5 provinces were used as clonal propagation materials,the 1-year-old branches were used as scions for grafting,and the 1-year-old seedlings were used as rootstocks for budding,and the height growth of the seedlings was investigated and analyzed.The results showed that the height growth of seedlings of ancient catalpa trees collected from different regions was 121.5 ~ 222.8 cm,the average value was184.12 cm,and the coefficient of variation was 0.1468 in one production cycle after grafting.The height growth of grafted seedlings of ancient tree branches collected from different regions had significant differences,and the height growth was significantly positively correlated with the latitude of ancient trees.The growth rhythm of grafted seedlings of ancient catalpa trees in different collection places showed an obvious "S" type growth curve,that was,a“slowfast-slow”growth law;July and August was the fast growing period for the height growth of the grafted seedlings of ancient catalpa trees,and the continuous height growth increment accounts for more than 78% of the total growth.

关 键 词：楸树古树 无性系 苗期 生长规律 芽接 

分 类 号：S792.99[农业科学—林木遗传育种]