文献类型：期刊文献

英文题名：Geographic variation in seedling morphology of Casuarina equisetifolia subsp equisetifolia (Casuarinaceae)

作者：Hu, Pan[1] Zhong, Chonglu[1] Zhang, Yong[1] Jiang, Qingbin[1] Chen, Yu[1] Chen, Zhen[1] Pinyopusarerk, Khongsak[2] Bush, David[2]

通信作者：Zhong, CL[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China;[2]CSIRO, Australian Tree Seed Ctr, Black Mt Labs, GPO Box 1600, Canberra, ACT 2001, Australia

年份：2016

卷号：64

期号：2

起止页码：160-170

外文期刊名：AUSTRALIAN JOURNAL OF BOTANY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000373708900008)】；

基金：The study reported in this paper was financially supported by the 12th National Five-Year Plan for Forestry Project (2012BAD01B0603), Forestry Science and Technology Innovation Project of Guangdong (2014KJCX017), National Natural Science Foundation of China (NSFC No. 31470634), and the Ministry of Finance of China through a Specific Program for the National Non-profit Scientific Institutions (RITFYWZX 201203). Seed used in this study was provided by CSIRO Australian Tree Seed Centre. We thank Drs John Doran and Chris Harwood of CSIRO Australia for valuable comments on the manuscript.

语种：英文

外文关键词：geographic variation; multivariate analysis; seedling morphology

摘要：Seeds collected from 28 natural provenances and introduced populations of Casuarina equisetifolia subsp. equisetifolia L. from Oceania, Asia and Africa were used to study geographic variation in growth and morphology of nursery-grown seedlings. Ten characteristics related to growth and branching habit were measured for each seedling and the resultant data subjected to univariate and multivariate analyses. In general, seedlings from Oceania grew more slowly, were more densely branched with fine and upright branching, and had fewer teeth per whorl than those from other areas. Cluster analysis effectively separated Oceania from Asian natural provenances, and revealed the probable original sources of introductions to different parts of Asia and Africa. Further investigation into the pattern of variation through molecular characterisation of genetic material from all major regions of distribution is warranted in order to better understand the genetic relationships and enhance more efficient utilisation of this important casuarina species.