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2009 E. bosistoana breeding population Marlborough May 2016
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Six year old tree being cored
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Yanjie Li UoC PhD student using coring drill
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Cores are taken right through the stem
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The family and progeny code are recorded on each core
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Freshly cut cores
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Hole left in stem is 19 mm diameter.
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Cores stained with di methyl yellow to identify heartwood.