金黄熊猫树子代家系生长性状遗传变异评价与选择  

Genetic Variation Evaluation and Selection of Growth Characteristics of Xanthostemon chrysanthus Offspring

作　　者：鲍晓红[1] BAO Xiaohong(Fujian Academy of Forestry,Key Laboratory of National Forestry and Grassland Administration on Timber Fosest Breeding and Cultivation for Mountainous Areas in Southern China,Fujian Key Laboratory of Forest Cultivation and Forest Products Processing,Fuzhou 350012,Fujian,China)

机构地区：[1]福建省林业科学研究院、国家林业局南方山地用材林培育重点实验室、福建省森林培育与林木产品加工利用重点实验室,福建福州350012

出　　处：《福建林业科技》2024年第4期50-55,共6页Journal of Fujian Forestry Science and Technology

基　　金：福建省花卉苗木品种引进与研发创新项目(闽林计财〔2016〕30号)。

摘　　要：为选择金黄熊猫树优良遗传材料并繁育应用,在福建省莆田市仙游县大济镇虎垅村开展金黄熊猫树优株子代测定,分析评价3年生金黄熊猫树子代家系的适应性和生长性状变异特性,并初步选择优良家系。结果表明:参试家系适应性较强,存活率高且生长良好,幼树可耐-1℃的短暂极端低温。3年生参试家系间的树高、米径和冠幅差异均达到极显著水平,变异较大,遗传力较高。树高、米径和冠幅的变异系数分别为20.48%、18.18%和18.62%,遗传力均达0.85以上;以树高、米径和冠幅为指标对参试家系进行综合分析评价,初步选择家系Z05、Z03、Z08、L04、L12、Z09为优良家系,这些家系3年生的保存率、树高、米径、冠幅分别达到92.10%~95.42%、3.73~4.02 m、3.95~4.35 cm、1.79~1.93 m,分别比群体均值提高5.86%~9.68%、17.71%~26.96%、12.19%~23.80%、19.62%~29.02%,遗传增益分别达到2.46%~4.06%、15.62%~23.78%、10.38%~20.26%、16.83%~24.90%。In order to select excellent genetic materials for breeding and application of the Xanthostemon chrysanthus,the determination of the offspring of X.chrysanthus was carried out in Hulong Village,Daji Town,Xianyou,Putian City,Fujian Province.The adaptability and growth trait variation characteristics of the 3-year-old X.chrysanthus offspring were analyzed and evaluated,and the optimal family was preliminarily selected.The results showed that the tested family had strong adaptability,high survival rate,and good growth.The young trees could tolerate short-term extreme low temperatures of-1℃.The differences in tree height,diameter at one meter height,and crown width among the 3-year-old participating families reached a highly significant level,with significant variation and high heritability.The coefficients of variation for tree height,diameter at one meter height,and crown width were 20.48%,18.18%,and 18.62%,respectively,and their heritability was above 0.85.Comprehensive analysis and evaluation were conducted on the tested families using tree height,diameter at one meter height,and crown width as indicators.Families Z 05,Z 03,Z08,L 04,L 12 and Z 09 were initially selected as excellent families.The preservation rate,tree height,diameter at one meter height and crown width of these families at 3 years old reached 92.10%~95.42%,3.73~4.02 m,3.95~4.35 cm and 1.79~1.93 m,respectively,which were 5.86%~9.68%,17.71%~26.96%,12.19%~23.80%and 19.62%~29.02%higher than the population mean.The genetic gains reached 2.46%~4.06%,15.62%~23.78%,10.38%~20.26%and 16.83%~24.90%,respectively.

关 键 词：金黄熊猫树 生长性状 遗传变异 家系选择 

分 类 号：S722.5[农业科学—林木遗传育种] S685.99[农业科学—林学]