气候变化领域集成服务门户(CCPortal): Organ-specific rest and quiescence in response to chilling and forcing in subtropical Torreya grandis trees

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DOI	10.1016/j.agrformet.2024.109968
	Organ-specific rest and quiescence in response to chilling and forcing in subtropical Torreya grandis trees
	Zhang, Rui; Li, Zhijun; Liang, Liang; Zheng, Jinbin; Wang, Fucheng; Chen, Lei; Ha, Heikki; Wu, Jiasheng
发表日期	2024
ISSN	0168-1923
EISSN	1873-2240
起始页码	349
卷号	349
英文摘要	Winter rest and chilling accumulation play a crucial role in regulating the leaf-out and flowering of extratropical woody plants. Still, there is a lack of understanding regarding the potential rest condition of overwintered immature cones of coniferous trees and how the dormancy of different organ types responds to environmental cues. To address this gap, we conducted a unique experimental design using 8-10-year-old potted adult Torreya grandis trees. We examined the rest condition in leaf buds, flower buds, and overwintered immature nuts (cones) simultaneously, and we summarized our findings with process-based models. Our results revealed that overwintered nuts, too, exhibit a rest condition and a chilling requirement similar to those of leaf and flower buds. The effects of photoperiod on rest break were minor in general, so that we did not include photoperiod in our process-based models. The upper limit of an effective chilling temperature was lower for the nuts (<13 degrees C) than for the flower and leaf buds (<17 degrees C). During the quiescence period after rest completion, a low forcing temperature of 10 degrees C enabled ontogenetic development in the nuts and the flower buds but not in the leaf buds. Despite these differences, our models predicted an almost identical change rate for the spring phenology under climate warming in the three organ types. Organ-specific phenological responses provide valuable insights into the impact of environmental factors on plant growth and development.
英文关键词	Chilling; Climate change; Dormancy release; Forcing; Process -based phenology models; Tree phenology
语种	英语
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001219163000001
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/298414
作者单位	Zhejiang A&F University; University of Kentucky; Sichuan University
推荐引用方式 GB/T 7714	Zhang, Rui,Li, Zhijun,Liang, Liang,et al. Organ-specific rest and quiescence in response to chilling and forcing in subtropical Torreya grandis trees[J],2024,349.
APA	Zhang, Rui.,Li, Zhijun.,Liang, Liang.,Zheng, Jinbin.,Wang, Fucheng.,...&Wu, Jiasheng.(2024).Organ-specific rest and quiescence in response to chilling and forcing in subtropical Torreya grandis trees.AGRICULTURAL AND FOREST METEOROLOGY,349.
MLA	Zhang, Rui,et al."Organ-specific rest and quiescence in response to chilling and forcing in subtropical Torreya grandis trees".AGRICULTURAL AND FOREST METEOROLOGY 349(2024).