期刊
TREE PHYSIOLOGY
卷 31, 期 5, 页码 472-482出版社
OXFORD UNIV PRESS
DOI: 10.1093/treephys/tpr038
关键词
bud set; climate change; dormancy; poplar; seasonal growth cycle
类别
资金
- European Union [QLK5-CT-2002-00953 POPYOMICS, FP7-211868 NOVELTREE]
Bud set, the cornerstone delimiting the seasonal growth period in trees, is the dynamic net result of the often photoperiod-controlled growth cessation and the subsequent bud formation. Here, we show that in hybrid poplar, the critical day length for growth cessation and the duration of bud formation each vary with local climatic conditions in identical genotypes. The detailed dissection of bud set suggests temperature as one additional environmental factor that modifies the sensitivity to day-length signals at growth cessation and influences the duration of bud formation in poplar. The ability of perennial plants to integrate additional environmental signals with photoperiod signaling may add to short-term acclimatization to the predicted longer growing seasons in future climates.
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