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    Author(s): Youran Fan; Kendal Rupert; Alex C. WiedenhoeftKeith Woeste; Christian Lexer; Richard Meilan
    Date: 2013
    Source: Trees. 27(4):973-983
    Publication Series: Scientific Journal (JRNL)
    PDF: Download Publication  (517.13 KB)


    Figure can add value to wood products, but its occurrence is unpredictable. A first step in reliably producing figured wood is determining whether it is faithfully transmitted to progeny via sexual and asexual reproduction. We describe a 26-year-old male aspen genotype, designated ‘Curly Poplar’, which was shown to be a Populus × canescens hybrid using microsatellite markers. All rooted cuttings of this genotype exhibited an undulating pattern on the radial surface that was not seen in the control trees, all of which showed a smooth radial surface and straight grain. We observed spiral grain with a magnitude of 2.77 ± 0.12°/cm from vertical in 11-month-old, field-grown rooted Curly Poplar cuttings, but spiral grain was not apparent in wood from the 26-year-old mature ortet that supplied these cuttings. Veneer cut from the mature tree exhibited a novel type of figure that we called ‘Scattered Moiré’. Reciprocal grafts between Curly Poplar and various non-figured aspens showed that a graft-transmissible signals did not appear to be involved in figure formation in Curly Poplar or the induction of figure in straight-grained trees. Curly Poplar was crossed to a straight-grained clone to test the inheritance of the gene(s) responsible for figure. Samples from the resulting population revealed that 79 out of 377 seedlings exhibited figure. A Chi-square test led to the rejection of a 1:1 segregation ratio between figured and non-figured phenotypes (p < 0.01), but not of a 1:3 segregation ratio (p 0.0793). Overall, these analyses showed that figure in Curly Poplar is under genetic control, but its inheritance may not be simple.

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    Fan, Youran; Rupert, Kendal; Wiedenhoeft, Alex C.; Woeste, Keith; Lexer, Christian; Meilan, Richard. 2013. Figured grain in aspen is heritable and not affected by graft-transmissible signals. Trees 27(4): 973-983.


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    Curly Poplar, Scattered Moiré, Figured wood, Heritability, Populus × canescens, Wood quality

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