Invasion Dynamics and Genotypic Diversity of Cogongrass (Imperata cylindrica) at the Point of Introduction in the Southeastern United States

Autor:	Michael G. Patterson, James H. Miller, Wilson H. Faircloth, A. G. Williamson, Edzard van Santen, Ludovic J. A. Capo-chichi
Rok vydání:	2008
Předmět:	Genetics Veterinary medicine Panmixia Genetic diversity Plant Science respiratory system Biology Gene flow Loss of heterozygosity Genetic distance Genetic marker Genotype Amplified fragment length polymorphism human activities
Zdroj:	Invasive Plant Science and Management. 1:133-141
ISSN:	1939-747X 1939-7291
DOI:	10.1614/ipsm-07-007.1
Popis:	Nine sites of cogongrass were included in a study of genotypic diversity and spread dynamics at the point of introduction and its adjacent areas in the southern United States. Clones evaluated with two primer pairs yielded a total of 137 amplified fragment length polymorphism (AFLP) loci of which 102 (74.4%) were polymorphic. Genetic diversity was measured as the percentage of polymorphic, Shannon's information index, Nei's gene diversity, and panmictic heterozygosity. Nei's gene diversity (HS) across all nine sites was estimated to be 0.11 and within site gene diversity ranged from 0.06 to 0.16. Bayesian estimate of gene diversity and Shannon's information index were higher (0.17 and 0.17, respectively). The samples from the point of introduction (Pi) had the lowest genetic diversity for all types of estimates. Within site variance accounted for 56% of the total variation and among site variance 44% (P
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ca90702b3cd14a4c421f0a9ae0ff0967 https://doi.org/10.1614/ipsm-07-007.1 Zobrazit plný text záznamu