Bud set in poplar – genetic dissection of a complex trait in natural and hybrid populations
Article first published online: 6 OCT 2010
© The Authors (2010). Journal compilation © New Phytologist Trust (2010)
Volume 189, Issue 1, pages 106–121, January 2011
How to Cite
Rohde, A., Storme, V., Jorge, V., Gaudet, M., Vitacolonna, N., Fabbrini, F., Ruttink, T., Zaina, G., Marron, N., Dillen, S., Steenackers, M., Sabatti, M., Morgante, M., Boerjan, W. and Bastien, C. (2011), Bud set in poplar – genetic dissection of a complex trait in natural and hybrid populations. New Phytologist, 189: 106–121. doi: 10.1111/j.1469-8137.2010.03469.x
- Issue published online: 30 NOV 2010
- Article first published online: 6 OCT 2010
- Received: 9 June 2010, Accepted: 11 August 2010
- bud set;
- candidate genes;
- quantitative trait loci;
- seasonal growth cycle
- •The seasonal timing of growth events is crucial to tree distribution and conservation. The seasonal growth cycle is strongly adapted to the local climate that is changing because of global warming. We studied bud set as one cornerstone of the seasonal growth cycle in an integrative approach.
- •Bud set was dissected at the phenotypic level into several components, and phenotypic components with most genetic variation were identified. While phenotypic variation resided in the timing of growth cessation, and even so more in the duration from growth cessation to bud set, the timing of growth cessation had a stronger genetic component in both natural and hybrid populations.
- •Quantitative trait loci (QTL) were identified for the most discriminative phenotypic bud-set components across four poplar pedigrees. The QTL from different pedigrees were recurrently detected in six regions of the poplar genome.
- •These regions of 1.83–4.25 Mbp in size, containing between 202 and 394 genes, form the basis for further molecular-genetic dissection of bud set.