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Reproductive gametes of Acacia mearnsii. Ovules (a) released from the ovary and (b) diploid (2x) and tetraploid (4x) polyads housing 16 pollen grains

Reproductive gametes of Acacia mearnsii. Ovules (a) released from the ovary and (b) diploid (2x) and tetraploid (4x) polyads housing 16 pollen grains

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Acacia mearnsii (black wattle) is grown commercially in South Africa for its timber and bark. However, the invasive nature of the species has resulted in it being considered an alien invader and for this reason research has been aimed at producing a sterile triploid variety that would be highly desirable for the South African commercial forestry in...

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... slides were made per isolation bag and 50 measurements were recorded per slide. Ovules and polyads were viewed and measured with a Carl Zeiss AxioImager M.2 microscope (Figure 1). ...

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... It is therefore fundamental to determine the trade-off between the commercial value and related environmental problems. To avoid the undesirable impacts without interfering with industry purposes, the implementation of sterile lineages of acacias is under investigation (Beck and Fossey 2007;Beck-Pay 2013). We also suggest that forest managers, industries or land owners that benefit from the cultivation of exotic acacias should be economically responsible for the problems derived from their plantations. ...
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The above- and belowground impacts due to Acacia invasions have been described in detail over the last 25 years. Future research should focus on the earlyd etection and prevention of new Acacia introductions and on a cost-effective and sustainable management of the novel ecosystems resulting from invasions.