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ESTABLISHMENT OF PRECAUTION AND CONTROL PROGRAM FOR invasive alien plantS—A CASE STUDY OF CONTROL OF GOLDERNROD(SOLIDAGO CANADENSIS) IN JIANGSU PROVINCE

ESTABLISHMENT OF PRECAUTION AND CONTROL PROGRAM FOR INVASIVE...

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中国第三届植物化感作用学术研讨会、第八届全国杂草科学大会、联合国粮农组织——中国“水稻化感作用论坛”

作者： Sheng QIANG Weed Research Laboratory,Nanjing Agricultural University,Nanjing 210095

A quantitative survey of goldernrod(Solidago canadensis),an invasive alien weed,was made in Jiangsu *** characteristics and ecological distribution of 40 populations collected from eastern China were comparatively ***... 详细信息

关键词： invasive alien plant Solidago canadensis Integrated management Precaution

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Changes in Soil Biota Resulting from Growth of the invasive Weed, Ambrosia artemisiifolia L.(Compositae), Enhance Its Success and Reduce Growth of Co-Occurring plants

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Journal of Integrative Agriculture 2014年第9期13卷 1962-1971页

作者： LI Hui-na XIAO Bo LIU Wan-xue WAN Fang-hao State Key Laboratory for Biology of plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences

Exotic plant invasion presents a serious threat to native ecosystem structure and function. Little is known about the role of soil microbial communities in facilitating or resisting the spread of invasive plants into native communities. The purpose of this research is to understand how the invasive annual plant Ambrosia artemisiifolia L. facilitates its competition capacity through changing the structure and function of soil microbial communities. The soil characteristics of different areas invaded by A. artemisiifolia were examined. Greenhouse experiments were designed to assess the effect of A. artemisiifolia invasion-induced changes of soil biota on co-occurring plant growth, and on the interactions between A. artemisiifolia and three co-occurring plant species. The results showed that the soil organic C content was the highest in heavily invaded sites, the lowest in native plant sites, and intermediate in newly invaded sites. Soil available N, P and K concentrations in heavily invaded site were 2.4, 1.9 and 1.7 times higher than those in native plant soil, respectively. Soil pH decreased as A. artemisiifolia invasion intensity increased, and was lower in invaded sites（heavily invaded and newly invaded） than in native plant sites. The soil microbial community structure was clearly separated in the three types of sites, and A. artemisiifolia invasion increased anaerobe, sulfate-reducing bacteria and actinomycete abundance. Soil biota of invaded sites inhibits growth of co-occurring plants（Galinsoga parvifloraCav., Medicago sativa L. and Setaria plicata（Lam.） T. Cooke.） compared to soil biota from un-invaded sites, but facilitates A. artemisiifolia growth and competition with co-occurring plants. A. artemisiifolia biomass was 50-130% greater when competing with three co-occurring plants, compared to single-species competition only（invasion by A. artemisiifolia alone）, in heavily invaded soil. Results of the present study indicated that A. artemisiifolia invasion al

关键词： biological invasion invasive alien plant Ambrosia artemisiifolia L. soil biota soil fertility

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Genetic diversity and population structure of invasive and native populations of Erigeron canadensis L.

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Journal of plant Ecology 2022年第4期15卷 864-876页

作者： Saurav Bhattacharya Fernando Hernández Mariana Ferreira Alves Raquel Moura Machado Yan-Yan Sun Meng-Ru Wang Chao-Bin Zhang Jian-Hua Hao School of Biology and Food Engineering Changshu Institute of TechnologyChangshu 215500China Departamento de Agronomía Universidad Nacional del Sur(UNS)Bahía BlancaArgentina Departamento de Biologia Vegetal Instituto de BiologiaUniversidade Estadual de CampinasSão PauloBrazil Agriculture Information and Economy Institute Shandong Academy of Agricultural SciencesJinan 250100China

invasive alien plants threaten biodiversity across the *** canadensis(horseweed)is one of the most problematic agricultural weeds and represents a classic example of intercontinental ***,we studied the genetic diversity and population structure of invasive alien populations from the Jiangsu and Zhejiang Provinces in China and native populations from Alabama,in the *** used 10 polymorphic SSR loci to genotype 312 individuals from 5 native and 5 invasive populations to estimate the genetic diversity and *** populations from Jiangsu and Zhejiang Provinces showed,on average,similar genetic diversity to native populations from Alabama,indicating no severe genetic bottlenecks during the *** revealed that low population differentiation occurred,and that only two genetic groupings were detected in both native and invaded *** high diversity observed in the invasive populations suggested multiple introductions and/or the introduction of genetically diverse propagules during initial *** study provides new insights toward understanding the invasion dynamics of this globally noxious weed in Eastern *** gene flow via seed dispersal between invasive and native populations should be examined to prevent the introduction and dispersal of herbicide-resistant individuals and inform management practices.

关键词： gene flow genetic diversity invasive alien plant introduced population native population

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