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Annals of Botany 2009 103(8):v; doi:10.1093/aob/mcp125
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© The Author 2009. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

John Bryant takes a closer look at some of this month's Original Articles

J. A. Bryant, Professor

University of Exeter, UK

E-mail j.a.bryant@exeter.ac.uk

The first 10% of the full text of this article appears below.

Genomic doubling generates genetic diversity


Figure 1
Polyploidization (often following hybridization) has played a major role in the evolution of plants. Anssour et al. (Jena and Gaterslaben, Germany, pp. 1207–1217) cite earlier papers stating that up to 70 % of angiosperms may be auto- or allopolyploids. The authors state that polyploidy leads, in early generations at least, to ‘genetic turmoil’ with the likelihood of new genetic variation. In investigating some of the genetic consequences of polyploidization they created the allotetraploid Nicotiana x obtusiata (N. attenuata x N. obtusifolia) and autotetraploids of both species. For comparison, they also looked at natural allotetraploids, N. quadrivalvis and N. clevelandii, which arose about one million years ago from N. attenuata x N. obtusifolia crosses. We focus here on a small part of their detailed and . . . [Full Text of this Article]

Slippery when wet

Meadows become battlefields in chemical warfare

Munching molluscs complicate clover competition


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Ann Bot 2009 103: i. [Extract] [Full Text]