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. 2014 Oct 16;14:276. doi: 10.1186/s12870-014-0276-5

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© Robinson et al.; licensee BioMed Central Ltd. 2014

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Growth and resource allocation in male and female Populus temula trees. Boxes representing females (F) are coloured pink and males (M) coloured blue, in the Umeå Aspen (Um) and Swedish Aspen (Sw) collections. (a) Growth rate calculated as height increment over five years in SwAsp. Analysis of Variance (ANOVA) results showed no significant sex differences (F_1,45 = 0.448, P =0.507) (b) Individual leaf area in UmAsp and SwAsp. ANOVA results showed no significant sex differences for samples from either the Um (F_1,38 = 0.958, P =0.334) or Sw (F_1,44 = 0.012, P =0.914) collections. (c) Foliar carbon/nitrogen ratio in Um. ANOVA results showed no significant sex differences (F_1,38 = 0.631, P =0.432).