杉木第2代种子园自由授粉子代测定与亲本结实性状联合选择  

Selection by Open-Pollination Progeny Test of the 2nd Generation Cunnihamia lanceolata Seed Orchard and Their Parent Cone Traits

作　　者：张勰[1] 徐清乾[1] 顾杨传 杨建华 黄帆[1] ZHANG Xie;XU Qing-qian;GU Yang-chuan;YANG Jian-hua;HUANG Fan(Hunan Academy of Forestry, Changsha 410004, China;Huitong Forestry Institute of Hunan, Huitong 418300, China)

机构地区：[1]湖南省林业科学院,湖南长沙410004 [2]会同县林业科学研究所,湖南会同418300

出　　处：《浙江林业科技》2017年第4期1-5,共5页Journal of Zhejiang Forestry Science and Technology

基　　金："十二五"国家科技支撑计划(2015BAD09B010101)

摘　　要：2011年4月,采用湖南省会同县第2代杉木Cunninghamia lanceolata(Lamb.)Hook种子园自由授粉子代的1年生裸根苗进行造林,参试家系共35个,以种子园混合种为对照,2012-2015年连续4 a进行树高、胸径、球果质量测定,并根据测定结果进行早期选择。结果表明,树高、胸径在家系间差异均达显著水平,6年生时平均树高、胸径、单株立木材积为分别为4.17 m,5.02 cm,0.005 91 m^3;2012-2015年的树高遗传力为0.344~0.434;6年生时的胸径、材积遗传力分别为0.466,0.409。从参试的35个家系中选出9个优良家系,6年生时其平均树高、胸径、单株立木材积分别为4.90 m,6.0 cm,0.008 41m^3,分别超出群体均值的18.2%,24.1%,42.3%,遗传增益分别为6.36%,8.95%和17.33%。综合考虑9个优良家系的无性系母株的结实性状,联合选出4个高产速生的无性系实生子代,单株平均球果重量达7.7 kg。1-year bare-rooted Cunninghamia lanceolata seedlings from open-pollination progenies of the2nd generation seed orchard in Huitong,Forestry Insititute of Hunan province were planted in2011in Guangping of Huitong,Hunan province.35famililes were tested with mixed seed and seedling as control.Continuous investigations had been conducted from2012to2015.The result demonstrated that it had great difference of seedling height and DBH among families.Mean seedling height,DBH and single tree volume of6-year seedlings was4.17m,5.02cm and0.00591m3.Height growth from2012to2015of tested families indicated that mean heritability of height was from0.344to0.434.Mean DBH and volume heritability of6-year seedlings was0.466,0.409.9families were selected from the tested35ones,their mean height,DBH and single tree volume of6-year seedlings was4.90m,6.0cm,0.00841m3,and was18.2%,24.1%and42.3%higher than that of means of35families.The genetic gain of growth traits was6.36%,8.95%and17.33%.Intergrated evaluation on cone traits of mother tree of selected9families resulted4progeny of clones with fast-growing and high-yield characteristics was chosen with their mean cone weight of7.7kg each tree.

关 键 词：杉木 第2代种子园 子代测定 结实性状 

分 类 号：S791.27[农业科学—林木遗传育种]