山苍子家系幼林生长性状遗传变异及稳定性分析  

Analysis of the Genetic Variation and Stability of Growth Traits of Litsea cubeba Young Plantation

作　　者：李红盛 汪阳东[1] 徐刚标[2] 陈益存[1] 吴立文 余孟杨 高暝[1] LI Hong-sheng;WANG Yang-dong;XU Gang-biao;CHEN Yi-cun;WU Li-wen;YU Meng-yang;GAO Ming(Research Institute of Subtropical Forestry,Chinese Academy of Forestry,Hangzhou 311400,Zhejiang,China;College of Forestry,Central South University of Forestry and Technology,Changsha 410004,Hu＇nan,China;Qingliu State-owned Forest Farm,Sanming 365300,Fujian,China)

机构地区：[1]中国林业科学研究院亚热带林业研究所,浙江杭州311400 [2]中南林业科技大学林学院,湖南长沙410004 [3]福建省清流国有林场,福建三明365300

出　　处：《林业科学研究》2018年第5期168-175,共8页Forest Research

基　　金："十三五"国家重点研发计划"林业资源培育及高效利用技术创新"重点专项(2017YFD0600704)

摘　　要：[目的]对山苍子不同家系幼林生长性状进行遗传变异及稳定性分析,为山苍子优良家系选择及推广提供参考。[方法]以13个半同胞山苍子家系为材料,采用随机区组设计,分别在重庆万州、湖北京山和福建清流3个试验点营建家系试验林。对23年生山苍子幼林的树高和地径性状进行测定和多点联合分析,并采用AMMI模型对山苍子各家系的生长稳定性进行评价。[结果](1)山苍子家系的树高和地径在家系和地点效应上均达到显著(0. 01 <P<0. 05)或极显著(P <0. 01)水平,地径的家系和地点交互作用达到显著水平(0. 01 <P <0. 05); 3个试验点树高和地径的表型变异系数为20. 98%～29. 27%,遗传变异系数为0. 62%～20. 35%,其中,地径的表型和遗传变异系数普遍大于树高;树高的家系遗传力为0. 003～0. 578,地径的家系遗传力为0. 455～ 0. 806。(2)综合双标图和稳定性参数得出:家系JY2和GX4地径表现较好且稳定性较高。[结论]山苍子家系的树高和地径在家系和地点间的差异均达到极显著水平(P <0. 01),存在丰富的遗传变异。在家系水平上,树高受低等到中等强度的遗传控制,地径受中等到高等强度的遗传控制。各家系在福建清流试点生长表现最好,湖北京山试点居次,重庆万州试点最差,其中家系JY2和GX4在3个试验点地径均表现较好且稳定性较高。[Objective]To provide reference for the follow-up family selection and variety extension by genetic variation analysis and stability evaluation of the growth traits of Litsea cubeba families. [Method]13 L. cubeba families were used to establish pedigree test forests in Wanzhou of Chongqing Municipality,Jingshan of Hubei Province and Qingliu of Fujian Province,which were designed in randomized complete blocks. The height and ground diameter were measured and analyzed when the forests were 2-years-old,then the growth performance and stability of different L. cubeba families were evaluated by AMMI model. [Result]（ 1） Both the family and site effect of height and ground diameter were significant（ 0. 01〈 P〈0. 05） or highly significant（ P〈0. 01）,the interaction effect of family and site of ground diameter was significant（ 0. 01〈 P〈0. 05）; the phenotypic variance coefficient of heightand ground diameter ranged from 20. 98% to 29. 27%; the genetic variation coefficient of which ranged from0. 62% to 20. 35%; and both the phenotypic and genetic variance coefficient of ground diameter were generally larger than that of height; the family heritability of tree height ranged from 0. 003 to 0. 578,and the family heritability of ground diameter ranged from 0. 455 to 0. 806.（ 2） Both the families JY2 and GX4 performed well in ground diameter and stability. [Conclusion] The family and site effect of height and ground diameter are both significant（ 0. 01〈 P〈0. 05） or highly significant（ P〈0. 01）,there is rich genetic variation. In the family level,the height of tree is genetically controlled by low to medium intensity,and the ground diameter is genetically controlled by medium to high intensity. The growth of different families performs best in Qingliu,followed by Jingshan,and the worst in Wanzhou. The families JY2 and GX4 show good ground diameter performance and high stability.

关 键 词：山苍子 家系 多点试验 生长性状 遗传变异 稳定性 

分 类 号：S718.46[农业科学—林学]