干旱区生态环境知识资源中心(Arid): Estimation of thermal time model parameters for seed germination in 15 species: the importance of distribution function

Arid

DOI	10.1017/S0960258521000040
	Estimation of thermal time model parameters for seed germination in 15 species: the importance of distribution function
	Chen, Dali; Chen, Xianglai; Wang, Jingjing; Zhang, Zuxin; Wang, Yan; Jia, Cunzhi; Hu, Xiaowen
通讯作者	Hu, XW (corresponding author), Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Peoples R China.
来源期刊	SEED SCIENCE RESEARCH
ISSN	0960-2585
EISSN	1475-2735
出版年	2021
卷号	31 期号:2 页码:83-90
英文摘要	Thermal time models have been widely applied to predict temperature requirements for seed germination. Generally, a log-normal distribution for thermal time [theta(T(g))] is used in such models at suboptimal temperatures to examine the variation in time to germination arising from variation in theta(T(g)) within a seed population. Recently, additional distribution functions have been used in thermal time models to predict seed germination dynamics. However, the most suitable kind of the distribution function to use in thermal time models, especially at suboptimal temperatures, has not been determined. Five distributions (log-normal, Gumbel, logistic, Weibull and log-logistic) were used in thermal time models over a range of temperatures to fit the germination data for 15 species. The results showed that a more flexible model with the log-logistic distribution, rather than the log-normal distribution, provided the best explanation of theta(T(g)) variation in 13 species at suboptimal temperatures. Thus, at least at suboptimal temperatures, the log-logistic distribution is an appropriate candidate among the five distributions used in this study. Therefore, the distribution of parameters [theta(T(g))] should be considered when using thermal time models to prevent large deviations; furthermore, an appropriate equation should be selected before using such a model to make predictions.
英文关键词	distribution function log-logistic distribution seed germination temperature thermal time model
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000669061200001
WOS关键词	HYDROTHERMAL TIME ; CARDINAL TEMPERATURES ; GRAIN LEGUMES ; CHICKPEA ; DESERT ; L.
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351757
作者单位	[Hu, Xiaowen] Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Peoples R China; [Chen, Dali] Lanzhou Univ, Coll Pastoral Agr Sci & Technol, Key Lab Grassland Livestock Ind Innovat, Minist Agr & Rural Affairs, Lanzhou 730000, Peoples R China; [Chen, Dali] Lanzhou Univ, Coll Pastoral Agr Sci & Technol, Minist Educ, Engn Res Ctr Grassland Ind, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Chen, Dali,Chen, Xianglai,Wang, Jingjing,et al. Estimation of thermal time model parameters for seed germination in 15 species: the importance of distribution function[J]. 兰州大学,2021,31(2):83-90.
APA	Chen, Dali.,Chen, Xianglai.,Wang, Jingjing.,Zhang, Zuxin.,Wang, Yan.,...&Hu, Xiaowen.(2021).Estimation of thermal time model parameters for seed germination in 15 species: the importance of distribution function.SEED SCIENCE RESEARCH,31(2),83-90.
MLA	Chen, Dali,et al."Estimation of thermal time model parameters for seed germination in 15 species: the importance of distribution function".SEED SCIENCE RESEARCH 31.2(2021):83-90.