亚美马褂木无性系采穗圃母株生长对萌条的影响和选择研究  

Study on the Effect to Budding Branch of Maternal Plant Growthof Clonal Cutting Orchard and Selectionof Liriodendron sino-americanum

作　　者：陈亚斌 钟永达[2] 陈惠敏 CHEN Yabin;ZHONG Yongda;CHEN Huimin(Wuyi State-owned Forest Farm of Fujian Province,364400,Zhangping,Fujian,PRC;Institute of Biological Resources,Jiangxi Academy of Sciences,330096,Nanchang,PRC)

机构地区：[1]福建省漳平五一国有林场,福建漳平364400 [2]江西省科学院生物资源研究所,南昌330096

出　　处：《江西科学》2024年第4期716-720,727,共6页Jiangxi Science

基　　金：福建省林业科学研究项目(闽林科便函〔2019〕16号);中央引导地方科技发展资金项目(20192ZDD01004)。

摘　　要：以13个亚美马褂木无性系采穗圃3年生母株为试材,研究了母株树高、地径,萌条数量、枝径和长度等性状无性系间差异及相关性,并选出优良无性系作为高质量采穗圃建圃材料。结果表明,亚美马褂木采穗圃母株地径、树高、萌条数量、萌条枝径、萌条长度在无性系间均存在显著或极显著差异,各性状均受较强遗传控制,无性系重复力为0.804~0.840,无性系个体重复力为0.450~0.512;各性状相关系数为0.436~0.808,均达到极显著正相关,表明选择速生的无性系,其萌条数量和质量均可望获得同步改良;根据采穗圃经营目标,选择A18、D29、D353个无性系作为优良建圃材料,其母株树高、地径、萌条数量、萌条枝径、萌条枝长平均值分别是2.09 m、3.3 cm、12.8条、0.9 cm、0.85 m,实际增益分别是21.78%、17.73%、26.83%、11.90%、29.49%,遗传增益分别是17.53%、14.89%、22.48%、9.57%、24.62%。本研究为亚美马褂木采穗圃营建材料选择提供一定的理论依据,为加快亚美马褂木扩繁推广奠定了基础。Based on the data of 3-years-old maternal plants of thirteen clones in cutting orchard of Liriodendron sino-americanum,This study investigated the differences and correlations analysis between the maternal plant height,ground diameter,and the budding branch number,diameter and length,and identified superior clones for high-quality breeding materials for cutting orchard.The results showed significant or extremely significant differences in the maternal plant height,ground diameter,and the budding branch number,diameter and length among clones,all of which were strongly genetically controlled.The clone’s repeatability is 0.804~0.840,and the individual’s repeatability is 0.450~0.512.All traits exhibited highly positive correlations ranging from 0.436 to 0.808,suggesting that selecting fast-growing clones would concurrently improve both the quantity and quality of budding branch.According to the management objectives of the cutting orchard,three clones, A18, D29, and D35, were selected as excellent propagating materials. The average valuesof their maternal plant height, ground diameter, and the budding branch number, diameter, andlength were 2. 09 m, 3. 3 cm, 12. 8, 0. 9 cm and 0. 85 m, respectively. The actual gains were21. 78%, 17. 73%, 26. 83%, 11. 90% and 29. 49%, and the genetic gains were 17. 53%,14. 89%, 22. 48%, 9. 57% and 24. 62%, respectively. This study provides a theoretical basis forthe selection of materials for cutting orchard of Liriodendron sino - americanum, and lays the foundationfor its propagation and promotion.

关 键 词：亚美马褂木 生长量 采穗圃 选择 

分 类 号：S718.4[农业科学—林学]