Spectral response of rice (Oryza sativa L.) leaves to Fe2+ stress

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	Spectral response of rice (Oryza sativa L.) leaves to Fe2+ stress
	Chi, GY ; Chen, X ; Shi, Y ; Liu, XH
刊名	SCIENCE IN CHINA SERIES C-LIFE SCIENCES
	2009
卷号	52 期号:8 页码:747-753
关键词	rice (Oryza sativa L.) spectrum Fe2+ lake eutrophication
ISSN号	1006-9305
通讯作者	Chen, X, Chinese Acad Sci, Key Lab Terr Ecol Proc, Inst Appl Ecol, Shenyang 110016, Peoples R China
中文摘要	In the management of lake eutrophication, the regulation effect of Fe is considered, in addition to the controlling nitrogen- and phosphorus input. Based on the "Fe hypothesis", this paper tentatively applied plant spectral response to the remote sensing early-warning mechanism of lake eutrophication. A laboratory water culture experiment with rice (Oryza sativa L.) was conducted to study Fe uptake by plants and the chlorophyll concentration and visible-near infrared spectrum of vegetable leaves as well as their interrelations under Fe2+ stress. Three spectral indices, i.e., A (1) (integral value of the changes of spectral reflectivity in the range 460-670 nm under Fe2+ stress), A (2) (integral value of the changes of spectral reflectivity in the range of 760-1000 nm under Fe2+ stress) and S (blue-shift range of red edge curve under Fe2+ stress), were used to establish quantitative models about the relationships between the rice leaf spectrum and Fe2+ stress. With the increase of Fe2+ in a culture solution, the Fe content in rice plants increased, while the chlorophyll concentration in vegetative leaves decreased. The spectral reflectivity of vegetable leaves increased in the visible light band but decreased in the near infrared band, and the blue-shift range of the red edge curve increased. The indices A (1), A (2) and S all had significant correlations with the Fe content in rice leaves, the correlation coefficient being respectively 0.951 (P < 0.01), -0.988 (P < 0.01) and 0.851 (P < 0.01), and simulated (multiple correlation coefficients R (2) > 0.96) and predict the Fe level in rice leaves.
学科主题	Biology
收录类别	SCI
资助信息	National Natural Science Foundation of China [40801133]
语种	英语
WOS记录号	WOS:000269536400008
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54063]
专题	沈阳应用生态研究所_沈阳应用生态研究所_期刊论文
推荐引用方式 GB/T 7714	Chi, GY,Chen, X,Shi, Y,et al. Spectral response of rice (Oryza sativa L.) leaves to Fe2+ stress[J]. SCIENCE IN CHINA SERIES C-LIFE SCIENCES,2009,52(8):747-753.
APA	Chi, GY,Chen, X,Shi, Y,&Liu, XH.(2009).Spectral response of rice (Oryza sativa L.) leaves to Fe2+ stress.SCIENCE IN CHINA SERIES C-LIFE SCIENCES,52(8),747-753.
MLA	Chi, GY,et al."Spectral response of rice (Oryza sativa L.) leaves to Fe2+ stress".SCIENCE IN CHINA SERIES C-LIFE SCIENCES 52.8(2009):747-753.