红松优树半同胞家系生长变异分析及优良家系选择
Variation Analyses of Growth Traits in Half-sib Families of Pinus koraiensis and S uperior Families Selection
[目的]分析红松(Pinus koraiensis)半同胞家系生长性状遗传变异,筛选优良遗传材料,为红松高世代种子园营建及林业推广应用提供材料。[方法]以吉林森工露水河林业有限公司红松种子园中初级园无性系子代为材料,对 19年生 218个红松半同胞家系的树高、胸径、材积进行方差分析、遗传参数估算、一般配合力分析、相关分析和综合评价,筛选优良家系,并在优良家系中筛选优良单株。[结果]各性状在不同家系间、不同区组间、不同家系*区组间均达到极显著差异水平(P＜0.01);全部红松家系树高的平均值为 3.22 m,胸径平均值为 4.79 cm,材积的平均值为 0.00508 m3,各性状表型变异系数变化范围为 25.42%～82.48%,家系遗传力变化范围为 0.86～0.89,单株遗传力变化范围为 0.23～0.38;家系PK20的树高、胸径、材积的平均值均最大,且家系PK20的树高、胸径和材积的一般配合力也均最大,除PK20外,PK33、PK6和PK46各性状的一般配合力也均较大;各性状之间呈极显著正相关关系,利用综合评价法按 5%的入选率筛选出 10个优良家系,入选家系的树高、胸径和材积均值分别为 3.85 m、6.50 cm和 0.00892 m3,遗传增益分别为 17.30%、31.02%和 65.0 8%,分别高出当地对照均值 16.31%、31.59%和 67.73%;以 2%的入选率在优良家系中选择优良单株,入选的 10 个优良单株树高、胸径和材积的均值分别为 5.06 m、10.72 cm和 0.02414 m3,遗传增益分别为 11.86%、17.31%和 38.68%,分别高出当地对照均值 52.87%、117.00%和 353.76%。[结论]所选的优良家系和优良单株可为红松高世代遗传改良提供材料,为国储林建设和林业双增提供良种。
[Objective]The genetic variation of growth traits in half sib families of Pinus koraiensis was analyzed,an d excellent genetic materials were selected to provide materials for the construction of high-generation seed orchard and fo restry popularization and application.[Method]Using Clonal progeny in primary garden of Pinus koraiensis seed garden in Jilin Forestry Co.,LTD.as meterials,analysis of variance,estimation of genetic parameters,analysis of general combini ng ability,correlation analysis and comprehensive evaluation of tree height,diameter at breast height(DBH)and volume o f 218 19-year-old Pinus koraiensis half-sib families were performed to screen excellent families and select excellent single plants in excellent families.[Result]There were extremely significant differences among different families,blockss and fa milies*groups(P<0.01).The average height of all red pine families was 3.22 m,the DBH was 4.79 cm,and the averag e volume was 0.00508 m3.The variation coefficient of phenotypic variation of each trait ranged from 25.42%to 82.48%,the family heritability ranged from 0.86 to 0.89,and the single plant heritability ranged from 0.23 to 0.38.The average v alues of tree height,DBH and volume of family PK20 were the largest,and the general combining ability of tree height,DBH and volume of family PK20 was also the largest,except for PK20,the general combining ability of PK33,PK6 and PK46 were also larger.There was a significant positive correlation among the traits.Ten excellent families were selected by comprehensive evaluation according to 5%selection rate.The average tree height,DBH and volume of the selected fa milies were 3.85 m,6.50 cm and 0.00892m3,respectively,and the genetic gain was 17.30%,31.02%and 65.08%,respecti vely.There were 16.31%,31.59%and 67.73%higher than the local control mean,respectively.Screening excellent single plants in the excellent families,the average tree height,DBH and volume of the 10 selected single plants were 5.06 m,1 0.72 cm and 0.02414 m3,respectively.and the genetic gain was 11.86%,17.31%and 38.68%,respectively,higher than the local control mean 52.87%,117.00%and 353.76%,respectively.[Conclusion]The selected excellent families and excellen t single plants can provide materials for genetic improvement of high generation seed orchards of Pinus koraiensis,and pr ovide excellent germplasm resources for national reserve forest construction and forestry double increase.
王芳;王玉彬;王君;张玉东;吴琳;李奎全;刘丽菲;王元兴;
吉林省林业科学研究院(吉林省林业生物防治中心站) 长春 130000;吉林森工露水河林业有限公司 白山 134300;吉林省林业科学研究院(吉林省林业生物防治中心站) 长春 130000;吉林森工露水河林业有限公司 白山 134300;吉林森工露水河林业有限公司 白山 134300;吉林森工露水河林业有限公司 白山 134300;吉林森工露水河林业有限公司 白山 134300;吉林省林业科学研究院(吉林省林业生物防治中心站) 长春 130000;
Pinus koraiensis half-sib families growth variation family selection
2112-2123 / 12
评论