Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1071/BT10312 |
New insights into the polyploid complex Cenchrus ciliaris L. (Poaceae) show its capacity for gene flow and recombination processes despite its apomictic nature | |
Kharrat-Souissi, Amina1; Baumel, Alex2; Torre, Franck2; Juin, Marianick2; Siljak-Yakovlev, Sonja3; Roig, Anne4; Chaieb, Mohamed1 | |
通讯作者 | Kharrat-Souissi, Amina |
来源期刊 | AUSTRALIAN JOURNAL OF BOTANY
![]() |
ISSN | 0067-1924 |
出版年 | 2011 |
卷号 | 59期号:6页码:543-553 |
英文摘要 | Cenchrus ciliaris L. is a C-4 perennial grass of arid lands which is under the focus of different ecological issues such as response to desertification, quality of forage grass and impacts of invasions. Here, molecular and morphological analyses of the genetic diversity of several Tunisian provenances of C. ciliaris were performed to better understand the phenotypic polymorphism of this agamospermous and polyploid grass. Ten phenotypic traits associated with productivity were measured in a common garden environment. Amplified Fragment Length Polymorphism (AFLP) markers were developed to investigate the structure of genetic diversity among and within provenances and between the three ploidy levels. Heritable phenotypic traits showed considerable differences within provenances. Surprisingly, AFLP markers revealed the existence of genotypic variations between individuals of the same sibship and a high G/N value (0.55). A neighbour-joining tree based on AFLP markers revealed three major groups; tetraploid, pentaploid and a mix of pentaploid and hexaploids. These groups do not correspond completely to the geographical origin of samples. The results underline the possibility of sexual reproduction, recombination and gene flow within and between populations of C. ciliaris. In respect with the well known dynamic nature of polyploid genomes, these results should have strong consequences for the future management of this grass for both conservation and invasion issues. |
类型 | Article |
语种 | 英语 |
国家 | Tunisia ; France |
收录类别 | SCI-E |
WOS记录号 | WOS:000295534600005 |
WOS关键词 | FACULTATIVE APOMIXIS ; REMNANT POPULATIONS ; CLONAL DIVERSITY ; GRASS ; BUFFELGRASS ; AFLP ; DESERTIFICATION ; ASTERACEAE ; STABILITY ; PASTURE |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/167304 |
作者单位 | 1.Univ Sfax, Fac Sci, Dept Biol, Lab Biol & Ecophysiol Vegetaux Milieu Aride, Sfax, Tunisia; 2.UMR CNRS IRD 6116 IMEP, Inst Mediterraneen Ecol & Paleoecol, F-13545 Aix En Provence 04, France; 3.Univ Paris 11, UMR 8079, Dept Biodivers Systemat & Evolut, Orsay, France; 4.Ctr INRA PACA, Domaine St Paul URFM, Unite Ecol Forets Mediterraneennes, F-84914 Avignon, France |
推荐引用方式 GB/T 7714 | Kharrat-Souissi, Amina,Baumel, Alex,Torre, Franck,et al. New insights into the polyploid complex Cenchrus ciliaris L. (Poaceae) show its capacity for gene flow and recombination processes despite its apomictic nature[J],2011,59(6):543-553. |
APA | Kharrat-Souissi, Amina.,Baumel, Alex.,Torre, Franck.,Juin, Marianick.,Siljak-Yakovlev, Sonja.,...&Chaieb, Mohamed.(2011).New insights into the polyploid complex Cenchrus ciliaris L. (Poaceae) show its capacity for gene flow and recombination processes despite its apomictic nature.AUSTRALIAN JOURNAL OF BOTANY,59(6),543-553. |
MLA | Kharrat-Souissi, Amina,et al."New insights into the polyploid complex Cenchrus ciliaris L. (Poaceae) show its capacity for gene flow and recombination processes despite its apomictic nature".AUSTRALIAN JOURNAL OF BOTANY 59.6(2011):543-553. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。