福建林业科技2025，Vol.52Issue(2)：1-5,14,6.DOI:10.13428/j.cnki.fjlk.2025.02.001
马尾松第2代种子园家系对松材线虫病的抗性及选择
Resistance Evaluation and Selection of Pinus massoniana Families in a Second-Generation Seed Orchard to Pine Wilt Disease
摘要
Abstract
Resistance of 30 free pollinating families in the second-generation seed orchard for Pinus massoniana were studied by arti-ficial inoculation with Bursaphelenchus xylophilus(Pine wood nematode)under natural conditions.The genetic variation pattern of re-sistance to pine wilt disease was analyzed based on mortality rate,and resistant families were selected.The results show that after in-oculation with B.xylophilus,the mortality rates of families differed significantly,with the genetic variation coefficient of interfamily mortality of 37.03%,and broad-sense heritability was 0.6323,confirming that the resistance to pine wilt disease at the family level was controlled strongly by gene.Nine families were selected based on the standard of resistance genetic gain no less than 20%,and a 29.62%resistance genetic gain was obtained.Among them,family No.59 has the strongest resistance,with a mortality rate of 5.79%,14.48 percentage points lower than the population mean,and the genetic gain of resistance reached 45.17%.关键词
松材线虫/马尾松/抗性/遗传变异Key words
Bursaphelenchus xylophilus/Pinus massoniana/resistance/genetic variation分类
农业科技引用本文复制引用
曾丽琼,蔡守平,童浩,张标强,陈志云,陈亚斌,苏顺德..马尾松第2代种子园家系对松材线虫病的抗性及选择[J].福建林业科技,2025,52(2):1-5,14,6.基金项目
福建省科技厅省属公益类科研院所基本科研专项(2021R1010008) （2021R1010008）
福建省林业种苗科技攻关七期项目(ZMGG-0705) （ZMGG-0705）
