Does past emergence of epicormic shoots control current composition of epicormic types?
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While past studies on epicormics in oak (Quercus sp.) have focused on the effect of thinning on epicormic shoots emergence, the consequences of this emergence on the epicormic ontogeny and future wood quality have rarely been asked.
This paper aims to quantifying the relationship between past emergence and current composition of epicormics.
Three thinning experiments with Quercus petraea (Matt.) Liebl. or Quercus robur L. were investigated. Epicormic shoots were regularly tallied and epicormic composition recorded recently. Some logs were scanned using X-ray computed tomography (CT).
Past tallies on both species were mainly and positively related to the current frequency of bud clusters and burls. This was due to the production of buds by epicormic shoots for only certain trees, as evidenced by CT, and mainly to correlated numbers of current epicormic shoots, bud clusters and burls, all originating from a past common set of buds and bud clusters.
The important tree effect on both species suggests that oak silviculture can be optimized by the early selection of crop trees with few epicormics and/or eventually a first and heavy thinning that helps in spotting remaining individuals being prone to the development of multiple epicormics.
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- Does past emergence of epicormic shoots control current composition of epicormic types?
Annals of Forest Science
Volume 69, Issue 2 , pp 139-152
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- Quercus petraea
- Quercus robur
- Secondary buds
- Bud clusters
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