Genetic uniformity of Alternanthera philoxeroides in South China
- 21 July 2003
- journal article
- Published by Wiley in Weed Research
- Vol. 43 (4) , 297-302
- https://doi.org/10.1046/j.1365-3180.2003.00346.x
Abstract
Summary: Alternanthera philoxeroides (Mart.) Grisb is an invasive weed that is widespread in a variety of habitats around the world. It was introduced into China in the 1930s, and today occurs in 20 provinces. The level and pattern of genetic diversity of 193 individuals from 11 land‐grown A. philoxeroides populations from South China were determined using 81 intersimple sequence repeat markers. Mean Nei's gene diversity (HE) was 0.0203 ± 0.008, and total diversity (HT) was 0.0286, indicating that genetic diversity in A. philoxeroides in South China is very low. There was a greater proportion of diversity within populations than among (GST = 0.292) populations. Gene flow (Nm) among populations was 0.607. These results are in accordance with the assumption that populations in South China are genetically depauperate because of the short introduction history and the partially clonal propagation of this weed.Keywords
This publication has 34 references indexed in Scilit:
- Demographic and random amplified polymorphic DNA analyses reveal high levels of genetic diversity in a clonal violetMolecular Ecology, 2001
- Population genetic structure of the cleistogamous plant species Viola pubescens Aiton (Violaceae), as indicated by allozyme and ISSR molecular markersHeredity, 2001
- Genetic structure and colonizing success of a clonal, weedy species, Pilosella officinarum (Asteraceae)Heredity, 2000
- Reproductive biology and genetic diversity of a cryptoviviparous mangrove Aegiceras corniculatum (Myrsinaceae) using allozyme and intersimple sequence repeat (ISSR) analysisMolecular Ecology, 1999
- The distribution of random amplified polymorphic DNA (RAPD) diversity amongst populations of Isotoma petraea (Lobeliaceae)Molecular Ecology, 1999
- Clonal diversity in the rareCalamagrostis porterissp.insperata(Poaceae): comparative results for allozymes and random amplified polymorphic DNA (RAPD) and intersimple sequence repeat (ISSR) markersMolecular Ecology, 1999
- Population Genetic Consequences of Small Population Size: Implications for Plant ConservationAnnual Review of Ecology and Systematics, 1993
- Genetics of weed invasionsPublished by Springer Nature ,1992
- DNA Protocols for PlantsPublished by Springer Nature ,1991
- The Evolution of WeedsAnnual Review of Ecology and Systematics, 1974