[1]解懿妮,莫晓勇,彭仕尧,等.粤西21个桉树无性系早期性状遗传变异分析和无性系综合选择[J].南京林业大学学报(自然科学版),2018,42(03):073-80.[doi:10.3969/j.issn.1000-2006.201708010]
 XIE Yini,MO Xiaoyong,PENG Shiyao,et al.Genetic variation analysis and early comprehensive selection of 21 Eucalyptusclones in western Guangdong Province, China[J].Journal of Nanjing Forestry University(Natural Science Edition),2018,42(03):073-80.[doi:10.3969/j.issn.1000-2006.201708010]
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粤西21个桉树无性系早期性状遗传变异分析和无性系综合选择
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
42
期数:
2018年03期
页码:
073-80
栏目:
研究论文
出版日期:
2018-05-15

文章信息/Info

Title:
Genetic variation analysis and early comprehensive selection of 21 Eucalyptus clones in western Guangdong Province, China
文章编号:
1000-2006(2018)03-0073-08
作者:
解懿妮1莫晓勇1彭仕尧2邓海燕1刘丽婷3*
1.华南农业大学林学与风景园林学院,广东 广州 510642; 2.国营雷州林业局,广东 遂溪 524348; 3.江西省林业科学院,江西 南昌 330032
Author(s):
XIE Yini1MO Xiaoyong1 PENG Shiyao2 DENG Haiyan1 LIU Liting3*
1.College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China; 2.Leizhou Forestry Bureau, Suixi 524348, China; 3.Forestry Academy of Jiangxi Province, Nanchang 330032, China
关键词:
桉树无性系 生长性状 形态性状 抗风性状 早期综合选择 粤西地区
Keywords:
Keywords:Eucalyptus clones growth traits morphological performance resistance to wind early comprehensive selection the western of Guangdong Province
分类号:
S722.3
DOI:
10.3969/j.issn.1000-2006.201708010
文献标志码:
A
摘要:
【目的】研究桉树无性系的遗传变异,筛选适合粤西地区速生丰产且抗风能力强的桉树优良无性系品系,为桉树多树种多品系营林选育良种提供科学依据。【方法】在雷州半岛开展21个桉树无性系生长对比试验,调查生长、形态及抗风等性状,对不同性状进行方差分析,并估算不同无性系各性状重复力、变异系数和性状间相关系数等遗传参数,最后采用选择指数法对参选无性系进行多性状综合选择。【结果】生长、形态和抗风性状在桉树无性系间存在极显著差异; 树高、胸径、单株材积、枝下高、冠幅、干形及分枝的无性系重复力均大于0.5,为中强度遗传,性状稳定性高; 表型变异系数的变异幅度为14.67%~51.06%,遗传变异系数为12.16%~44.53%,单株材积、枝下高、冠幅的变异系数较其他性状的大。参选桉树无性系的树高、胸径和单株材积之间有极显著的相关关系。以选择指数法综合各性状表现,选出整体表现优于对照华桉1号的28#、2#、JJ144 3个无性系。【结论】在经历多次台风危害之后,初步选出生长、形态和抗风性能在雷州地区表现良好的桉树无性系28#、2#、JJ144,可作为后续良种选育的基础。
Abstract:
Abstract: 【Objective】The genetic variation of Eucalyptus clones was studied. Superior clones with fast-growth, high-yield, and strong wind-resistance in western Guangdong Province were screened, providing scientific basis for breeding varieties of multiple species of Eucalyptus trees.【Method】The comparative experiment was carried out in Leizhou Peninsula. The growth, morphological performance and wind-resistance of 21 Eucalyptus clones were investigated. Firstly, variance analysis was performed for different traits. Thereafter, the genetic parameters, such as traits of repeatability, variation ratios, and related parameters were estimated. Lastly, a variety of traits were chosen comprehensively by using the selection index method.【Result】The significant differences were observed for tree growth, morphological performance, and wind-resistance of Eucalyptus clones. High genetic stability was observed for traits, including height, diameter, individual volume, under branch height, and crown diameter, while genetic stability for stem form and branch appearance were moderate(>0.5). Phenotypic variation ranged between 14.67% and 51.06%, while the range of genetic variation was 12.16%-44.53%. The variation coefficient of individual volume, under crown length, and crown diameter was larger than variation coefficient of other traits. There was a significant correlation between the height, diameter, and individual volume of Eucalyptus clones. According to the performance of each character, based on the selection index method, the clones 28#, 2# and JJ144 surpassed Eucalyptus 1#. 【Conclusion】After severe damage caused by typhoon, the clones 28#, 2# and JJ144 were selected based on their fine growth, morphological performance, and wind-resistance. These superior clones could be used as a basis for further selective breeding.

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备注/Memo

备注/Memo:
基金项目:国家重点研发计划(2016YFD0600500); 广东省省级科技计划项目(2014B020202013) 第一作者:解懿妮(854369214@qq.com)。*通信作者:刘丽婷(39191393@qq.com),副研究员,博士。
更新日期/Last Update: 2018-06-06