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The Scientific World Journal
Volume 2012 (2012), Article ID 657945, 9 pages
http://dx.doi.org/10.1100/2012/657945
Research Article

The Effect of High Concentrations of Glufosinate Ammonium on the Yield Components of Transgenic Spring Wheat (Triticum aestivum L.) Constitutively Expressing the bar Gene

1Department of Biotechnology, Cereal Research Non-Profit Ltd. Co., Alsó kikötő sor 9, 6726 Szeged, Hungary
2Biological Research Centre, Institute of Plant Biology, Hungarian Academy of Sciences, Temesvári körút 62, 6726 Szeged, Hungary

Received 25 October 2011; Accepted 26 December 2011

Academic Editor: Victor Fedorenko

Copyright © 2012 Zoltán Áy et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We present an experiment done on a bar+ wheat line treated with 14 different concentrations of glufosinate ammonium—an effective component of nonselective herbicides—during seed germination in a closed experimental system. Yield components as number of spikes per plant, number of grains per spike, thousand kernel weight, and yield per plant were thoroughly analysed and statistically evaluated after harvesting. We found that a concentration of glufosinate ammonium 5000 times the lethal dose was not enough to inhibit the germination of transgenic plants expressing the bar gene. Extremely high concentrations of glufosinate ammonium caused a bushy phenotype, significantly lower numbers of grains per spike, and thousand kernel weights. Concerning the productivity, we observed that concentrations of glufosinate ammonium 64 times the lethal dose did not lead to yield depression. Our results draw attention to the possibilities implied in the transgenic approaches.