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. 2009 Jun 1;60(12):3387–3396. doi: 10.1093/jxb/erp175

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© 2009 The Author(s).

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

This paper is available online free of all access charges (see http://jxb.oxfordjournals.org/open_access.html for further details)

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Fig. 1. — Effect of plant growth regulators on ryegrass seed dormancy and germination. Seeds were exposed to plant growth regulators (PGR) (A) during germination conditions, either directly upon imbibition (non-stratified) or following 21 d dark or light stratification at 20 °C, or (B) during stratification, after which seeds were germinated in the absence of PGR. All PGRs were applied at 50 μM except for GA₄, which was at 10 μM. Values are means ±SE (n=4). Data were analysed by two-factor ANOVA, and different letters above the bars indicate a significant difference at the 5% level. Pooled LSD values are: (A) 4.39, (B) 4.10. ABA, abscisic acid; GA₃, gibberellic acid; GA₄, gibberellin A₄; F, fluridone; PB, paclobutrazol; DN, diniconazole.