长白落叶松半同胞子代遗传增益分析  

Genetic Gain of Analysis on Half-Sib Progenies of Larix olgensis

作　　者：王洪梅 刘国军 丰庆义[3] 王福德 李艳霞 翁海龙 周显昌 

机构地区：[1]黑龙江省林业科学研究所,哈尔滨150081 [2]黑龙江省兴隆林业局,兴隆151801 [3]黑龙江省林业科学院江山娇实验林场,宁安157436

出　　处：《林业科技》2011年第6期1-4,共4页Forestry Science & Technology

基　　金：国家林业公益性行业科研专项子项目"兴安落叶松种质资源评价与新品种选育及繁育技术(编号:201004009-5);黑龙江省攻关项目"种子园改建与升级技术研究"(GA08B201-02)资助

摘　　要：以长白落叶松半同胞子代24年生林分为研究对象,测定了胸径、树高和材积生长因子,结果表明:不同半同胞家系林木各生长因子间差异均达极显著水平,说明长白落叶松半同胞家系间存在较为丰富的遗传变异,具选育潜力。24年生长白落叶松林分胸径、树高及材积遗传力分别为0.680 8、0.717 8及0.760 6。根据性状遗传力的大小,以树高、胸径和材积最为优良落叶松半同胞家系选择指标,采用25%入选率进行选优时,可选出4个优良半同胞家系,其树高、胸径和材积遗传增益分别可达5.26%、8.32%和19.83%。Using 24- years-old half-sib progenies of Larix olgensls stand as materials, growth factors such as diameter at breast height （DBH）, tree height, and timber volume were measured.The results showed that there were significant differences of growth factors measured among different half-sib progenies, indicating that there were abundant genetic variation among half-sib progenies family and potentials for selection. The heritability of DBH ,height and timber volume of 24 years old Larix olgensis stand were 0.6808, 0.7178and 0.7606, respectively . According to the heritability value, height, timber volume and DBH could be used as selection indexes. Using 25% as selection ratio, 4 superior half-sib progenies families could be selected with genetic gains of height, DBH and timber volume were 5.26%, 8.32% and 19.83%, respectively.

关 键 词：长白落叶松 半同胞子代 遗传力 遗传增益 

分 类 号：S791.229[农业科学—林木遗传育种] S722.33[农业科学—林学]