杉木优良无性系最早选择年龄和营林增益  

A Study on Earliest Selection Age and Gain of Superior Clone in Chinese Fir

作　　者：赵林峰[1] 高建亮[1] 刘金林 赵林艳[1] 伍威[1] Zhao Linfeng Gao Jianliang Liu Jinlin Zhao Linyan Wu Wei(Hunan Polytechnic of Environment and Biology, Hengyang, 421005 Jindong Forest Farm, Yongzhou City, Hunan Province, Qiyang, 426191)

机构地区：[1]湖南环境生物职业技术学院,衡阳421005 [2]湖南省永州市金洞林场,祁阳426191

出　　处：《分子植物育种》2017年第1期384-392,共9页Molecular Plant Breeding

基　　金：湖南省林业厅(98-201);湖南省教育厅(97B138)共同资助

摘　　要：本研究根据131个杉木无性系26a的调查数据试图探讨优良无性系最早选择年龄和营林增产效益。在试验时期,无性系之间H、D_(1.3)的生长差异始终显著存在。当无性系间具有显著差异时,6a时按H>CK_15%、D_(1.3)>CK_110%选择了17个无性系,10a、15a和26a时首先将H>CK_15%、H>CK_110%的无性系排序、再顺位选择17个无性系,并与26a选择的无性系进行比较。凡与26a选择相同的无性系认定为正选无性系。结果发现:6a时正选率47.06%、10a时正选率82.35%、15a时正选率88.24%。因此认为:杉木优良无性系的最早选择年龄是10a。对块状造林优良无性系与CK_2的调查数据统计计算后得出:优良无性系的营林增产效果明显。优良无性系在10a时的产材量是生产种CK_2的1.57倍,15a是生产种CK_2的1.67倍,26a是生产种CK_2的1.81倍。In this study, according to the survey data of 131 Chinese fir clones about growth traits in 26 years, we tried to discuss the superior clones of the earliest age and silvicultural production benefits. During the test period,the growth differences of the clones H, D1.3were always significantly existed. When existing significant differences among clones, we selected 17 clones according to the standard H〉CK15%, D1.3〉CK110% at 6a; Also, we selected17 clones according to the standard of H〉CK15%, H〉CK110% at 10 a, 15 a and 26 a through rank and sequence,then compared with the clones selected at 26 a. All same clones with 26 a were identified as the correct clones. And the results showed that correct rate was 47.06% at 6a, 82.35% at 10 a, 88.24% at 15 a. So the conclusion as follows：the earliest selection age of superior clone in Chinese fir is at 10 a. After calculated the survey data on the massive afforestation clones and CK2, the silvicultural production effect in the superior clones is obvious. The output of superior clones by comparing with common seedling crop on a unit of area is 1.57 times, 1.67 times at 15 a and1.81 times at 26 a, respectively.

关 键 词：杉木 无性系 选择 年龄 营林增产 

分 类 号：S791.27[农业科学—林木遗传育种]