大叶栎优良家系选择  

Superior Families Selection of Castanopsis fissa

作　　者：蒋燚[1] 黄荣林[1] 姜英[1] 刘雄盛[1] 陈云峰 邓玉华 陈振华 肖叶群 黎建雄 

机构地区：[1]广西壮族自治区林业科学研究院广西优质用材林资源培育重点实验室国家林业局中南速生材繁育重点实验室,南宁530002 [2]广西国有黄冕林场,鹿寨545600 [3]广西国有派阳山林场,宁明532500 [4]苍梧县林业技术推广站,广西苍梧543100

出　　处：《广西林业科学》2015年第2期93-99,共7页Guangxi Forestry Science

基　　金：中央财政林业科技推广示范资金项目([2014]TG10号);广西林业科学研究项目(桂林科字[2006]第23号)

摘　　要：以9年生大叶栎（Castanopsis fissa）51个家系为研究对象,进行生长性状分析结果显示：（1）树高、胸径、材积3个生长性状在家系内均存在丰富的变异,并达到极显著水平;（2）地点、家系及地点×家系交互作用对树高、胸径和材积生长的影响均达极显著程度,其中以地点对生长指标影响均最大,其家系胸径、树高、材积的遗传力分别为0.820 4、0.887 9、0.817 5;（3）各家系树高、胸径和材积等生长指标与试验点的自然概况因子间相关性均不显著,表明大叶栎家系具有较强的地理区域适应性;（4）以入选家系的遗传增益〉20%同时胸径、树高生长量不低于家系平均值为标准,选出8个优良家系分别CW08、CW05、PY08、YF02、RS06、RS03、RS09、TD09,入选家系的胸径、树高、材积生长量比总体平均值分别提高5.69%-13.82%、7.62%-14.29%、17.78%-39.85%;胸径、树高、材积遗传增益分别提高6.39%-11.45%、6.55%-12.26%、20.23%-32.55%。With 9-year-old Castanopsis fissa 51 families as the research object, the results of the growth traits analysis showed that tree height, DBH, volume in the families were extremely significant in variation. The influence of interaction among places, families, places ＊ families on tree height, DBH, volume was extremely significant, among which place was the most. The family heritabilities of tree height, DBH, volume were 0. 820 4, 0. 887 9, 0. 817 5 respectively. Growth indexes of tree height, DBH and volume in families and natural profile factors in tested points were not significantly correlated, which indicated that Castanopsis fissa families had strong geographical regional adaptability. Taking genetic gain more than 20% in families and growth amount of DBH and tree height not less than the average value of families as the standard, eight superior families were chosen, which were CW08, CW05, PY08, YF02, RS06, RS03, RS09 and TD09. DBH, tree height, volume of selected families increased from 5.69% to 13.82%, from 7.62% to 14.29%, and from 17.78% to 39.85% respectively than the overall average value. Genetic gains of DBH, tree height and volume increased from 6.39% to 11.45%, from 6. 55% to 12. 26%, and from 20. 23% to 32. 55% respectively.

关 键 词：大叶栎 遗传力 家系选择 生长性状 

分 类 号：S792.18[农业科学—林木遗传育种]