Modelling the establishment and spread of autotetraploid plants in a spatially heterogeneous environment

Li, B.H. and Xu, X.M. and Ridout, M.S. Modelling the establishment and spread of autotetraploid plants in a spatially heterogeneous environment. Journal of Evolutionary Biology, 17 . pp. 562-573. (The full text of this publication is not available from this repository)

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Abstract

The establishment and spread of autotetraploids from an original diploid population in a heterogeneous environment were studied using a stochastic simulation model. Specifically, we investigated the effects of heterogeneous habitats and nonrandom pollen/seed dispersal on the critical value (μ) of unreduced 2n gamete production necessary for the establishment of autotetraploids as predicted by deterministic models. Introduction of a heterogeneous environment with random pollen/seed dispersal had little effect on the μ value. In contrast, incorporating nonrandom pollen/seed dispersal into a homogeneous environment considerably reduced the μ value. Incorporating both heterogeneous habitats and nonrandom pollen/seed dispersal may lead either to an increase or to a decrease in the μ value compared to that with random dispersal, indicating that the two factors interact in a complex way.

Item Type: Article
Subjects: Q Science > QH Natural history > QH426 Genetics
Divisions: Faculties > Science Technology and Medical Studies > School of Mathematics Statistics and Actuarial Science
Depositing User: Martin S Ridout
Date Deposited: 29 Jun 2011 15:19
Last Modified: 13 Dec 2011 13:18
Resource URI: http://kar.kent.ac.uk/id/eprint/9061 (The current URI for this page, for reference purposes)
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