油松种子园子代变异和遗传稳定性的分析  

Progeny Variation and Genetic Stability of Pinus tabulaeformis in Clone Seed Orchard

作　　者：刘永红[1] 樊军锋[1] 杨培华[1] 韩创举[1] 谢俊峰 李安平 

机构地区：[1]西北农林科技大学,陕西杨凌712100 [2]陕西省洛南县古城林场

出　　处：《东北林业大学学报》2009年第1期6-7,17,共3页Journal of Northeast Forestry University

基　　金：国家林业局科技推广项目(2006-85);西北农林科技大学育种专项(05YZ-035-1)资助

摘　　要：对70个4年生油松优树子代家系在3个试验点的区域试验分析的结果表明：各试点油松家系间高生长差异均达到极显著水平，其中陇县、黄陵平均生长量大于对照30％以上；3个试验点家系遗传力为0.562-0.783，遗传变异系数为6.938％-9.682％，遗传增益显著；家系×地点的互作效应达到显著水平。根据Eberhart-Russell模式对油松家系进行稳定性分析，结合生长表现将参试家系划分为4种类型，其中高产稳定型家系30个，平均遗传增益在17％以上。A regional experiment was eondueted on the 4-year-old Pinus tabulaeformis Cart. trees from 70 progeny families in three seed orchards. A highly significant difference in height growth was observed between different families in the three seed orchards. The average height increment of trees in Longxian and Huangling seed orchards inereased by 30% compared with the control trees. The family heritability varied from 0.562 to 0.783, genetie variation eoeffieients from 6.938% to 9.682% , and genetic gain was remarkable. The site-family interaetion achieved a significant level. The stability of families was analysed by Eberhart-Russell model. The families were classified into four groups in terms of growth and genetic stability. Thirty stable families with high-yield were sereened out, and the average genetic gain reaehed over 17%.

关 键 词：油松 种子园 子代测定 遗传变异 稳定性 

分 类 号：S791.254[农业科学—林木遗传育种] S722.8[农业科学—林学]