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Updated: Jun 1, 2026
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Non-radioactive in situ Hybridization Protocol Applicable for Norway Spruce and a Range of Plant Species
Published on: April 17, 2009
Hybridization and morphogenetic variation in the invasive alien Fallopia (Polygonaceae) complex in Belgium
Marie-S Tiébré1, Jean-P Bizoux, Olivier J Hardy
1Laboratory of Ecology, Gembloux Agricultural University, Passage des Déportés 2, B-5030 Gembloux, Belgium;
American Journal of Botany
|June 4, 2011
Summary
Hybridization in invasive knotweeds (Fallopia spp.) restored genetic diversity and created distinct genotypes, challenging previous assumptions about their invasive success. This highlights the underestimated role of hybridization in alien species spread.
Area of Science:
- Ecology
- Evolutionary Biology
- Botany
Background:
- Invasive alien knotweeds (Fallopia spp.) are significant ecological threats in Europe and North America.
- Hybridization is hypothesized to enhance the invasive success of Fallopia species.
Purpose of the Study:
- To investigate hybridization patterns and their evolutionary consequences in invasive Fallopia in Belgium.
- To analyze the roles of ploidy levels, morphology, and genetic variation in the invasion process.
Main Methods:
- Analysis of ploidy levels using chromosome counts and flow cytometry.
- Assessment of morphological variation among taxa.
- Determination of genetic variation using Random Amplified Polymorphic DNA (RAPD) markers.
Main Results:
- At least four taxa with varying ploidy levels were identified in the Belgian invasion.
- Hybrid Fallopia × bohemica exhibited diverse chromosome numbers and restored genotypic diversity.
- Hybrid genotypes formed distinct genetic pools, differing from a simple parental mixture; significant morphological differences were found between parental species and hexaploid hybrids.
Conclusions:
- Hybridization plays a crucial, likely underestimated, role in the invasion dynamics and evolutionary trajectory of alien Fallopia species.
- Concerted molecular and morphological analyses are essential for understanding the evolutionary impact of hybridization in invasive plants.
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