Vertical distributions of chlorophyll and nitrogen and their associations with photosynthesis under drought and rewatering regimes in a maize field

doi:10.1016/j.agrformet.2019.03.026

	Vertical distributions of chlorophyll and nitrogen and their associations with photosynthesis under drought and rewatering regimes in a maize field
	Li, Yibo 1; Song, He 1; Zhou, Li 2; Xu, Zhenzhu; Zhou, Guangsheng 2
	2019
发表期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
卷号	272 页码:40-54
摘要	In this study, we characterize the vertical leaf distribution of chlorophyll (Chl) and nitrogen (N) content and their associations with leaf photosynthetic responses in Zea mays L. under field watering regimes. We simulated five precipitation patterns, including a drought-rewatering sequence using an electric-powered, rainproof shelter. The results indicate the vertical leaf Chl and N distribution versus the cumulative leaf-area index (LAIc) fit well into a significant quadratic function. The simulated precipitation patterns significantly influenced the parabolic curve trajectory patterns and their parameters. Chlorophyll and N contents had the same trend, with a close and positive relationship. Drought stress followed by rewatering increased the slopes of the linear equations but narrowed the parabolic opening of the quadratic functions. This finding implies that the relationship between Chl and N content can be used to estimate responses to drought and rewatering. The findings also suggested that the relationship patterns between Chl and N levels could be an assessment tool for N-fertilizer managements under different drought conditions to maintain high yields in maize production. Principal component analysis indicated the correlations between functional traits in maize leaves and the responses to drought and rehydration. These findings help to improve drought management and cultivar selection, which will be important in coping with the severe intensity and high frequency of episodic drought events expected from climate change.
关键词	Chlorophyll Drought episode Nitrogen Rewatering Vertical distribution Zea mays L
学科领域	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
DOI	10.1016/j.agrformet.2019.03.026
收录类别	SCI
语种	英语
WOS关键词	LEAF NITROGEN ; WATER-STRESS ; GAS-EXCHANGE ; CANOPY PHOTOSYNTHESIS ; CROP PHOTOSYNTHESIS ; REMOTE ESTIMATION ; PLANT-RESPONSES ; YIELD ; GROWTH ; WHEAT
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000469158400005
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1873-2240
资助机构	China Special Fund for Meteorological Research in the Public Interest [GYHY201506019, GYHY201506001-3] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41330531, 31661143028]
作者邮箱	xuzz@ibcas.ac.cn ; gszhou@ibcas.ac.cn
引用统计	被引频次：50[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/19531
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Meteorol Adm, Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Li, Yibo,Song, He,Zhou, Li,et al. Vertical distributions of chlorophyll and nitrogen and their associations with photosynthesis under drought and rewatering regimes in a maize field[J]. AGRICULTURAL AND FOREST METEOROLOGY,2019,272:40-54.
APA	Li, Yibo,Song, He,Zhou, Li,Xu, Zhenzhu,&Zhou, Guangsheng.(2019).Vertical distributions of chlorophyll and nitrogen and their associations with photosynthesis under drought and rewatering regimes in a maize field.AGRICULTURAL AND FOREST METEOROLOGY,272,40-54.
MLA	Li, Yibo,et al."Vertical distributions of chlorophyll and nitrogen and their associations with photosynthesis under drought and rewatering regimes in a maize field".AGRICULTURAL AND FOREST METEOROLOGY 272(2019):40-54.

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