首页 | 本刊简介 | 编委会 | 投稿征稿 | 期刊订阅 | 下载中心 | English
 
   
  论文快速检索

请输入关键词

 

 

   
  信息公告
访问总次数
15835107
今日访问
180
当前在线
0人
 
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 48次   下载 12 本文二维码信息
码上扫一扫!
分享到: 微信 更多
7种桉树花粉微观形态及其亲缘关系分析
王楚彪1,2, 李敖彬3, 潘松海4, 卢万鸿1, 林彦1, 罗建中1
1.国家林业和草原局桉树研究开发中心, 广东 湛江 524022;2.南京林业大学, 南京 210037;3.中国林业集团有限公司, 北京 100026;4.中林集团雷州林业局有限公司, 广东 湛江 524043
摘要:  为了解我国常用桉树树种的亲缘关系,利用扫描电镜观察7种桉属(Eucalyptus)树种的花粉形态。结果表明,粗皮桉(E. pellita)、窿缘桉(E. exserta)的7个花粉性状大多处于前2位,其中粗皮桉花粉的赤道面长、宽和面积最大,分别为17.522、17.090 μm和300.830 μm2,而窿缘桉花粉的萌发沟长、宽和大小最大,分别为6.576、0.720 μm和4.718 μm2;赤桉(E. camaldulensis)花粉的赤道面最小,韦塔桉(E. wetarensis)花粉的萌发沟最小。聚类分析表明,在信息保留87.5%时,7树种可以分为3组,粗皮桉和窿缘桉聚在一组,韦塔桉和巨桉(E. grandis)聚在一组,其余聚在一组。粗皮桉、窿缘桉的花粉外壁纹饰较光滑,细叶桉(E. tereticornis)和赤桉属常规,尾叶桉(E. urophylla)、韦塔桉和巨桉较粗糙。从花粉形态分析,粗皮桉和窿缘桉的亲缘关系较近,韦塔桉、尾叶桉的亲缘关系较远,细叶桉、赤桉和巨桉的亲缘关系与传统分类结果一致。因此,7种桉树花粉形态反映了一些新的亲缘关系,对桉树的杂交育种有指导意义。
关键词:  桉树  花粉  扫描电镜  亲缘关系  形态
DOI:10.11926/jtsb.4258
分类号:
基金项目:中国林业科学研究院基本科研业务费专项(CAFYBB2017MB028);广东省林业科技创新项目(2017KJCX031,2019KJCX014)资助
Analysis of Pollen Micro-morphology and Phylogenetic Relationship among Seven Species of Eucalyptus
WANG Chu-biao1,2, LI Ao-bin3, PAN Song-hai4, LU Wan-hong1, LIN Yan1, LUO Jian-zhong1
1.China Eucalypt Research Centre, Zhanjiang 524022, Guangdong, China;2.Nanjing Forestry University, Nanjing 210037, China;3.China Forestry Group Corporation, Beijing 100026, China;4.China Forestry Group Leizhou Forestry Bureau Co. Ltd., Zhanjiang 524022, Guangdong, China
Abstract:  In order to understand the phylogenetic relationship of Eucalyptus species common in China, the pollen morphology of 7 species was observed under scanning electron microscopy. The result showed that the 7 pollen characters of E. pellita and E. exserta were mostly in the top 2. Among 7 species, the equatorial length (EL), width (EW) and area of E. pellita pollen were the largest with 17.522, 17.090 μm and 300.830 μm2, respectively; the colpus length (CL), width (CW) and size of E. exserta pollen were the largest with 6.576, 0.720 μm and 4.718 μm2, respectively; and the equatorial area of E. camaldulensis pollen was the smallest, colpus size of E. wetarensis pollen was the smallest. According to cluster analysis based on pollen characters, 7 Eucalyptus species could be divided into 3 groups under 87.5% of information remaining, including E. pellita and E. exserta, E. wetarensis and E. grandis, and the others. The pollen wall ornamentation of E. pellita and E. exserta were smooth, which E. tereticornis and E. camaldulensis was conventional, and that of E. urophylla, E. wetarensis and E. grandis was rough. From pollen morphology analysis, the phylogenetic relationship between E. pellita and E. exserta was closer, which between E. wetarensis and E. urophylla was farther, and that among E. tereticornis, E. camaldulensis and E. grandiswas consistent with traditional classification. Therefore, there were new interspecies relationships among Eucalyptus species from pollen morphology, which had guiding significance to the hybridization breeding of Eucalyptus.
Key words:  Eucalyptus  Pollen  SEM  Phylogenetic relationship  Morphology

Copyright 2007 版权所有 中国科学院华南植物园《热带亚热带植物学报》编辑部
地址: 广州市天河区兴科路723号 中国科学院华南植物园 《热带亚热带植物学报》编辑部 邮编:510650 电话: 86 (0)20-3725 2514  传真: E-mail: jtsb@scib.ac.cn
本系统由北京勤云科技发展有限公司设计
京ICP备09084417号-2