红椿与毛红椿半同胞家系早期选择研究  

Early selection study of half sib families of Toona ciliata var.ciliata&Toona ciliata var.pubescens

作　　者：陈娟[1] 彭建[2] 肖兴翠[2] 杨勇智[2] 杨滨豪 徐志伦 漆峥嵘 CHEN Juan;PENG Jian;XIAO Xingcui;YANG Yongzhi;YANG Binhao;XU Zhilun;QI Zhengrong(Southwest Minzu University,Chengdu 610041,Sichuan,China;Sichuan Academy of Forestry Sciences,Chengdu 610081,Sichuan,China;Pengxi natural resources and Planning Bureau,Pengxi 629100,Sichuan,China)

机构地区：[1]西南民族大学,四川成都610041 [2]四川省林业科学研究院,四川成都610081 [3]蓬溪县自然资源和规划局,四川蓬溪629100

出　　处：《中南林业科技大学学报》2020年第8期17-24,共8页Journal of Central South University of Forestry & Technology

基　　金：四川省科技计划项目“突破性林木新品种选育与育种材料创新”(2016NYZ0035)子专题“香椿、红椿突破性新品种选育与育种材料创新”(2016NYZ0035-03);中央高校基本科研业务费专项资金项目“四川凉山彝族传统聚落景观研究”(2017NZYQN07)。

摘　　要：【目的】选择出适宜于川中丘陵区的红椿及毛红椿优良家系,为速生珍贵用材树种造林提供优良家系。【方法】对来自4个省的18个红椿与毛红椿家系,采用随机区组设计,在四川蓬溪开展了造林对比试验。通过对不同家系3年生胸径、树高和单株材积进行分析比较,开展了优良家系的早期选择。【结果】造林3 a的结果表明:18个半同胞家系的胸径、树高、单株材积在家系间均存在极显著差异,3个生长性状的遗传力均在0.85以上;18个家系中,以SC-307生长最好,胸径、树高、单株材积分别为7.65 cm、6.52 m和0.0160 m^3,遗传增益分别为49.76%、31.96%和139.53%,变异系数均在15%以内,家系生长均匀一致;其次是SC-214和SC-361家系,胸径分别为7.23和7.18 cm,树高分别为6.27和5.81 m,单株材积分别为0.0139和0.0127 m^3,胸径、树高和单株材积的遗传增益分别在40%、19%和90%以上,平均变异系数小于15%,家系总体生长较为均匀一致。【结论】以3年生胸径、树高和单株材积生长为依据,选择出SC-347、SC-214和SC-3613个来源于四川种源的优良家系,造林3 a的平均胸径、树高、单株材积分别为7.35 cm、6.20 m和0.0142 m^3,年均胸径生长量在2.39 cm以上,平均遗传增益分别为44.41%、26.25%和113.62%,生长优势显著,遗传增益高,通过进一步的观测和比较,可为川中丘陵区红椿及毛红椿造林提供优良的家系。【Objective】In order to select the best families of Toona ciliata var.ciliata and Toona ciliata var.pubescens which are suitable for the hilly area in the middle of Sichuan province,and to provide the best families for the afforestation of fast-growing precious timber species.【Method】A comparative afforestation experiment was carried out in Pengxi,Sichuan province,using a randomized block design for 18 Toona ciliata var.ciliata and Toona ciliata var.pubescens families from four provinces.the early selection of excellent families was carried out based on the comparative analysis of DBH,height and individual volume of 3-year-old trees in different families.【Result】The results of 3 years afforestation show that:there were significant differences in DBH,tree height and individual volume among 18 half sib families.The heritability of three growth characters were all above 0.85.Among the 18 families,SC-347 grew best,DBH,tree height,and individual volume were 7.65 cm,6.52 m and 0.0160 m^3,with genetic gains of 49.76%,31.96%and 139.53%respectively.The coefficient of variation was within 15%,and the growth of the family was uniform.The second is SC-214 and SC-361,the DBH was 7.23 cm and 7.18 cm,the height was 6.27 m and 5.81 m,the individual volume integral was 0.0139 m^3 and 0.0127 m^3,the genetic gains of DBH,height and individual volume are above 40%,19%and 90%respectively,the average coefficient of variation is less than 15%,and the overall growth of the family was relatively uniform.【Conclusion】Based on the DBH,height and volume growth of 3-year-old trees,three excellent families,SC-347,SC-214 and SC-361,were selected from Sichuan provenance,The average DBH,height,and individual volume were 7.35 cm,6.20 m and 0.0142 m^3 in three years.The average DBH growth was more than 2.39 cm,and the average genetic gain was 44.41%,26.25%and 113.62%respectively,the three families have significant growth advantage and high genetic gain.Through further observation and comparison,it can provide superior families for af

关 键 词：红椿 毛红椿 家系 生长性状 早期选择 

分 类 号：S722.31[农业科学—林木遗传育种]