Statistical identification of chilling and heat requirements for apricot flower buds in Beijing, China

doi:10.1016/j.scienta.2015.09.006

	Statistical identification of chilling and heat requirements for apricot flower buds in Beijing, China
	Guo,Liang; Xu,Jianchu; Dai,Junhu; Cheng,Jimin; Luedeling,Eike
	2015-11-12
发表期刊	SCIENTIA HORTICULTURAE
卷号	195 页码:138-144
摘要	Instead of the commonly used approach of conducting controlled experiments to estimate chilling and heat requirements (CR and HR) of fruit trees, the statistical method of Partial Least Squares (PLS) regression was applied to identify the CR and HR of apricot (Prunus armeniaca L.) in Beijing, China by correlating first flowering dates of apricot with daily chilling and heat accumulation during 1963-2010. Three common chilling models (the 0-7.2 degrees C, Utah and Dynamic Models) and one forcing model (the Growing Degree Hour Model) were used to convert daily temperature data into daily chill and heat accumulation rates. The results indicated that PLS regression analysis is a useful approach to estimate the CR and HR of fruit trees wherever phenology and climate observations have been conducted for long periods. Use of all chilling models indicated similar chilling periods for apricot in Beijing (mid-September to early March), while the identified forcing period started in early January and extended to the first flowering date for each year. The Dynamic Model appeared to be the most accurate model with smallest year-to-year variation in chill accumulated during the chilling period (coefficient of variation of only 7.5%). Using the Dynamic Model for chill, and the Growing Degree Hour Model for heat quantification, the CR of apricot in Beijing was determined at 75 6 Chill Portions (CP) and the HR at 3055 938 Growing Degree Hours (GDH). (C) 2015 Elsevier B.V. All rights reserved.
关键词	Apricot Chilling Model Chilling Requirement Flower Buds Forcing Model Heat Requirement
DOI	10.1016/j.scienta.2015.09.006
收录类别	SCI
语种	英语
WOS记录号	WOS:000364884100016
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/25246
专题	资源植物与生物技术所级重点实验室
推荐引用方式 GB/T 7714	Guo,Liang,Xu,Jianchu,Dai,Junhu,et al. Statistical identification of chilling and heat requirements for apricot flower buds in Beijing, China[J]. SCIENTIA HORTICULTURAE,2015,195:138-144.
APA	Guo,Liang,Xu,Jianchu,Dai,Junhu,Cheng,Jimin,&Luedeling,Eike.(2015).Statistical identification of chilling and heat requirements for apricot flower buds in Beijing, China.SCIENTIA HORTICULTURAE,195,138-144.
MLA	Guo,Liang,et al."Statistical identification of chilling and heat requirements for apricot flower buds in Beijing, China".SCIENTIA HORTICULTURAE 195(2015):138-144.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
1-s2.0-S030442381530（1592KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览下载