杉木半同胞24年生优良家系选择  

Selection of Superior Families from 24-year-old Cunninghamia lanceolata Half-sib Families

作　　者：戴俊[1] 陈代喜[1] 罗启亮 莫宗恒 肖建军 胡美成 黄开勇[1] 

机构地区：[1]广西壮族自治区林业科学研究院广西优良用材林资源培育重点实验室广西杉木良种培育中心,南宁530002 [2]融安县西山林场,广西融安545400

出　　处：《广西林业科学》2016年第2期125-129,共5页Guangxi Forestry Science

基　　金：广西林业科技项目(桂林科字[2014]01号);广西科学研究与技术开发计划项目(桂科能1598025-48)

摘　　要：对融安县西山林场种子园的78个杉木(Cunninghamia lanceolata)半同胞家系子代测定林的1年生、2年生、20年生和24年生的生长情况进行分析研究。结果表明,在不同生长阶段,大部分家系子代的树高、胸径(地径)和材积生长指标均呈显著或极显著差异。主要生长性状受到较高的遗传力控制,且早晚秩次呈极显著正相关,大部分家系子代在不同年度的生长表现比较稳定,具有较高的一致性。以24年生时的材积指标为评判依据,决选出12个优良家系,其材积、材积现实增益和遗传增益均分别达到0.291 7 m3、17.96%和7.85%以上。The growth of seventy-eight half-sib families of Cunninghamia lanceolata at the age of 1 year old,2 years old,20 years old and 24 years old in the progeny test forest in Xishan Forest Farm seed orchard of Rong＇ an County was analyzed. The results showed that there were significant or highly significant differences among progenies of most families in tree height,DBH（ diameter at breast height） and volume at different stages of growth. The main growth traits were controlled by high heritability. The juvenile-mature rank among each ages showed highly significant positive correlation,and the growth traits of most families progenies were stable and high consistency at different ages. The volume index of 24-year-old families was taken as the baseline,twelve superior families were finally selected,whose volume,volume gain and genetic gain were higher than 0. 291 7 m3,17. 96% and 7. 85% respectively.

关 键 词：杉木 半同胞家系 子代测定 选择 

分 类 号：S791.27[农业科学—林木遗传育种]